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Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Jun. 30, 2017	Jul. 31, 2017	Dec. 31, 2016
Document Documentand Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Trading Symbol	MRCY
Entity Registrant Name	MERCURY SYSTEMS INC
Entity Central Index Key	0001049521
Current Fiscal Year End Date	--06-30
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		48,108,360
Entity Public Float			$ 1,241.0

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Current assets:
Cash and cash equivalents	$ 41,637	$ 81,691
Accounts receivable, net of allowance for doubtful accounts of $83 and $92 at June 30, 2017 and 2016, respectively	76,341	73,427
Unbilled receivables and cost in excess of billings	37,332	22,467
Inventory	81,071	58,284
Prepaid income taxes	1,434	3,401
Prepaid expenses and other current assets	8,381	6,122
Total current assets	246,196	245,392
Restricted cash	0	264
Property and equipment, net	51,643	28,337
Goodwill	380,846	344,027
Acquired intangible assets, net	129,037	116,673
Other non-current assets	8,023	1,803
Total assets	815,745	736,496
Current liabilities:
Accounts payable	27,485	26,723
Accrued expenses	20,594	10,273
Accrued compensation	18,406	13,283
Deferred revenues and customer advances	6,360	7,365
Long-term Debt, Current Maturities	0	10,000
Total current liabilities	72,845	67,644
Deferred income taxes	4,856	11,842
Income taxes payable	855	700
Secured Long-term Debt, Noncurrent	0	182,275
Other non-current liabilities	11,772	991
Total liabilities	90,328	263,452
Commitments and contingencies
Shareholders' equity:
Preferred stock, $0.01 par value; 1,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.01 par value; 85,000,000 shares authorized; 46,303,075 and 38,675,340 shares issued and outstanding at June 30, 2017 and 2016, respectively	463	387
Additional paid-in capital	584,795	357,500
Retained earnings	139,085	114,210
Accumulated other comprehensive income	1,074	947
Total shareholders' equity	725,417	473,044
Total liabilities and shareholders' equity	$ 815,745	$ 736,496

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 83	$ 92
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	85,000,000	85,000,000
Common stock, shares issued	46,303,075	38,675,340
Common stock, shares outstanding	46,303,075	38,675,340

Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net revenues	$ 408,588	$ 270,154	$ 234,847
Cost of revenues	217,045	142,535	120,647
Gross margin	191,543	127,619	114,200
Operating expenses:
Selling, general and administrative	76,491	52,952	49,010
Research and development	54,086	36,388	36,535
Amortization of intangible assets	19,680	8,842	7,008
Restructuring and other charges	1,952	1,240	3,175
Impairment of Long-Lived Assets Held-for-use	0	231	0
Acquisition costs and other related expenses	1,931	3,993	117
Total operating expenses	154,140	103,646	95,845
Income from operations	37,403	23,973	18,355
Interest income	462	131	21
Interest expense	(7,568)	(1,172)	(34)
Other income, net	771	2,354	453
Income from continuing operations before income taxes	31,068	25,286	18,795
Tax provision	6,193	5,544	4,366
Income from continuing operations	24,875	19,742	14,429
Loss from discontinued operations, net of income taxes	0	0	(4,060)
Net income	$ 24,875	$ 19,742	$ 10,369
Basic net earnings (loss) per share:
(Loss) income from continuing operations (dollars per share)	$ 0.59	$ 0.58	$ 0.45
(Loss) income from discontinued operations (dollars per share)	0.00	0.00	(0.13)
Basic net (loss) earnings per share (dollars per share)	0.59	0.58	0.32
Diluted net earnings (loss) per share:
(Loss) income from continuing operations (dollars per share)	0.58	0.56	0.44
(Loss) income from discontinued operations (dollars per share)	0.00	0.00	(0.13)
Diluted net (loss) earnings per share (dollars per share)	$ 0.58	$ 0.56	$ 0.31
Weighted-average shares outstanding:
Basic (in shares)	41,986	34,241	32,114
Diluted (in shares)	43,018	35,097	32,939
Comprehensive income:
Net income	$ 24,875	$ 19,742	$ 10,369
Foreign currency translation adjustments	(93)	171	(235)
Pension benefit plan, net of tax	220	0	0
Total other comprehensive income, net of tax	127	171	(235)
Total comprehensive income	$ 25,002	$ 19,913	$ 10,134

Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning Balance (in shares) at Jun. 30, 2014		31,284,000
Beginning Balance at Jun. 30, 2014	$ 327,147	$ 312	$ 241,725	$ 84,099	$ 1,011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock incentive plans (in shares)		1,275,000
Issuance of common stock under employee stock incentive plans	3,710	$ 13	3,697
Issuance of common stock under employee stock purchase plan (in shares)		79,000
Issuance of common stock under employee stock purchase plan	838	$ 1	837
Stock Repurchased and Retired During Period, Shares		(67,000)
Stock Repurchased and Retired During Period, Value	(944)		(944)
Stock-based compensation	8,728		8,728
Tax shortfall from employee stock plan awards	525		525
Net income	10,369			10,369
Foreign currency translation adjustments	(235)				(235)
Pension benefit plan, net of tax	0
Ending Balance (in shares) at Jun. 30, 2015		32,571,000
Ending Balance at Jun. 30, 2015	350,138	$ 326	254,568	94,468	776
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock incentive plans (in shares)		1,267,000
Issuance of common stock under employee stock incentive plans	6,879	$ 12	6,867
Issuance of common stock under employee stock purchase plan (in shares)		88,000
Issuance of common stock under employee stock purchase plan	1,218	$ 1	1,217
Stock Repurchased and Retired During Period, Shares		(426,000)
Stock Repurchased and Retired During Period, Value	(7,955)	$ (4)	(7,951)
Stock Issued During Period, Shares, New Issues		5,175,000
Stock Issued During Period, Value, New Issues	92,778	$ 52	92,726
Stock-based compensation	9,666		9,666
Net income	19,742			19,742
Share-based business combination consideration	407		407
Foreign currency translation adjustments	171				171
Pension benefit plan, net of tax	$ 0
Ending Balance (in shares) at Jun. 30, 2016	38,675,340	38,675,000
Ending Balance at Jun. 30, 2016	$ 473,044	$ 387	357,500	114,210	947
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock incentive plans (in shares)		976,000
Issuance of common stock under employee stock incentive plans	2,756	$ 9	2,747
Issuance of common stock under employee stock purchase plan (in shares)		96,000
Issuance of common stock under employee stock purchase plan	2,214	$ 1	2,213
Stock Repurchased and Retired During Period, Shares		(344,000)
Stock Repurchased and Retired During Period, Value	(8,766)	$ (3)	(8,763)
Stock Issued During Period, Shares, New Issues		6,900,000
Stock Issued During Period, Value, New Issues	215,725	$ 69	215,656
Stock-based compensation	15,442		15,442
Net income	24,875			24,875
Foreign currency translation adjustments	(93)				(93)
Pension benefit plan, net of tax	$ 220				220
Ending Balance (in shares) at Jun. 30, 2017	46,303,075	46,303,000
Ending Balance at Jun. 30, 2017	$ 725,417	$ 463	$ 584,795	$ 139,085	$ 1,074

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 24,875	$ 19,742	$ 10,369
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	32,269	15,742	13,840
Stock-based compensation expense	15,341	9,574	8,728
Deferred income taxes	(7,841)	(3,061)	(1,038)
Impairment of Long-Lived Assets Held-for-use	0	231	2,283
Excess tax benefit from stock-based compensation	0	0	(943)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	0	0	892
Non-cash interest expense	1,810	301	0
Other non-cash items	(626)	(722)	(495)
Changes in operating assets and liabilities, net of effects of businesses acquired:
Accounts receivable, unbilled receivable, and cost in excess of billings	(14,054)	(25,396)	5,935
Inventory	(9,318)	(865)	(345)
Prepaid income taxes	1,978	346	(2,265)
Prepaid expenses and other current assets	(1,270)	2,964	(4,964)
Other non-current assets	372	(778)	565
Accounts payable and accrued expenses	3,520	18,871	(475)
Deferred revenues and customer advances	(1,621)	(194)	1,138
Income taxes payable	9,622	253	(938)
Other non-current liabilities	4,089	(68)	(80)
Net cash provided by operating activities	59,146	36,940	32,207
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(77,757)	(309,756)	0
Purchases of property and equipment	(32,844)	(7,885)	(5,984)
Proceeds from Divestiture of Businesses	0	0	885
Other investing activities	(486)	(567)	(499)
Net cash used in investing activities	(111,087)	(318,208)	(5,598)
Cash flows from financing activities:
Proceeds from Issuance of Common Stock	215,725	92,778	0
Proceeds from employee stock plans	4,970	8,097	4,548
Stock Repurchased and Retired During Period, Value	(8,766)	(7,955)	(944)
Excess tax benefit from stock-based compensation	0	0	943
Proceeds from issuance of term debt, net	0	194,900	0
Payments of debt issuance costs	(591)	(2,926)	0
Payments of term debt	(200,000)	0	0
Payments of capital lease obligations	0	0	(642)
Net cash provided by financing activities	11,338	284,894	3,905
Effect of exchange rate changes on cash and cash equivalents	549	479	(215)
Net (decrease) increase in cash and cash equivalents	(40,054)	4,105	30,299
Cash and cash equivalents at beginning of year	81,691	77,586	47,287
Cash and cash equivalents at end of year	41,637	81,691	77,586
Cash paid during the period for:
Interest	5,758	1,041	34
Income taxes	2,834	7,975	7,875
Supplemental disclosures-non-cash activities:
Share-based business combination consideration	$ 0	$ 407	$ 0

Description of Business	12 Months Ended
Description of Business	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business Mercury Systems, Inc. (the “Company” or “Mercury”) is a leading commercial provider of secure sensor and safety critical mission processing subsystems. Optimized for customer and mission success, its solutions power a wide variety of critical defense and intelligence programs. Headquartered in Andover, Massachusetts, it is pioneering a next-generation defense electronics business model specifically designed to meet the industry's current and emerging technology and business needs. The Company delivers affordable innovative solutions, rapid time-to-value and service and support to its defense prime contractor customers. The Company's products and solutions have been deployed in more than 300 programs with over 25 different defense prime contractors. Key programs include Aegis, Patriot, Surface Electronic Warfare Improvement Program ("SEWIP"), Gorgon Stare, Predator, F-16, F-35, E2D Hawkeye, Reaper and Paveway. The Company's organizational structure allows it to deliver capabilities that combine technology building blocks and deep domain expertise in the aerospace defense sector. On April 3, 2017, the Company acquired Delta Microwave, LLC (“Delta”) on a cash-free, debt-free basis for a total purchase price of $40,500, subject to net working capital and net debt adjustments. Based in Oxnard, California, Delta is a leading designer and manufacturer of high-value radio frequency ("RF"), microwave and millimeter wave sub-assemblies and components for the military, aerospace, and space markets. See Note C to consolidated financial statements. On November 3, 2016, the Company acquired CES Creative Electronic Systems, S.A. (“CES”) for a total purchase price of approximately $39,123, subject to net working capital and net debt adjustments. Based in Geneva, Switzerland, CES is a leading provider of embedded solutions for military and aerospace mission critical computing applications. CES specializes in the design, development and manufacture of safety-certifiable product and subsystems solutions including: primary flight control units, flight test computers, mission computers, command and control processors, graphics and video processing and avionics-certified Ethernet and input-output ("IO"). CES has decades of experience designing subsystems deployed in applications certified up to the highest levels of design assurance. CES products and solutions are used on platforms such as aerial refueling tankers and multi-mission aircraft, as well as several types of unmanned platforms. See Note C to consolidated financial statements. On May 2, 2016, the Company acquired the custom microelectronics, RF and microwave solutions, and embedded security operations of Microsemi Corporation (the “Carve-Out Business”), resulting in the entities comprising the Carve-Out Business becoming 100% owned direct or indirect subsidiaries of Mercury (the “Carve-Out Acquisition”). Under the terms of the Purchase Agreement, the Company paid $300,000 in cash on a cash-free, debt-free basis, subject to working capital and other post-closing adjustments.

Summary of Significant Accounting Policies

12 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.

USE OF ESTIMATES

The preparation of financial statements in conformity with Generally Accepted Accounting Principles ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

RECLASSIFICATION

The Company included costs related to the sustainment of its product portfolio as research and development expense, which was previously included as costs of revenues on the Consolidated Statements of Operations and Comprehensive Income. For comparative purposes, for the fiscal years ended June 30, 2016 and 2015, the Company has reclassified $2,845 and $3,981, respectively, from costs of revenues to research and development expense.

BUSINESS COMBINATIONS

The Company utilizes the acquisition method of accounting under FASB ASC 805, Business Combinations, (“FASB ASC 805”), for all transactions and events which it obtains control over one or more other businesses, to recognize the fair value of all assets and liabilities acquired, even if less than one hundred percent ownership is acquired, and in establishing the acquisition date fair value as measurement date for all assets and liabilities assumed. The Company also utilizes FASB ASC 805 for the initial recognition and measurement, subsequent measurement and accounting, and disclosure of assets and liabilities arising from contingencies in business combinations. Other estimates include:


•	estimated step-ups for the fixed assets and inventory;


•	estimated fair values of intangible assets; and


•	estimated income tax assets and liabilities assumed from the acquiree.

While the Company uses its best estimates and assumptions as part of the purchase price allocation process to accurately value assets acquired and liabilities assumed at the business acquisition date, the estimates and assumptions are inherently uncertain and subject to refinement. As a result, during the purchase price allocation period, which is generally one year from the business acquisition date, the Company records adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill. For changes in the valuation of intangible assets between the preliminary and final purchase price allocation, the related amortization is adjusted in the period it occurs. Subsequent to the purchase price allocation period, any adjustment to assets acquired or liabilities assumed is included in operating results in the period in which the adjustment is determined.

REVENUE RECOGNITION

The Company relies upon FASB ASC 605, Revenue Recognition, to account for its revenue transactions. Revenue is recognized upon shipment provided that title and risk of loss have passed to the customer, there is persuasive evidence of an arrangement, the sales price is fixed or determinable, collection of the related receivable is reasonably assured, and customer acceptance criteria, if any, have been successfully demonstrated. Out-of-pocket expenses that are reimbursable by the customer are included in revenue and cost of revenue.

Certain contracts with customers require the Company to perform tests of its products prior to shipment to ensure their performance complies with the Company’s published product specifications and, on occasion, with additional customer-requested specifications. In these cases, the Company conducts such tests and, if they are completed successfully, includes a written confirmation with each order shipped. As a result, at the time of each product shipment, the Company believes that no further customer testing requirements exist and that there is no uncertainty of acceptance by its customer.

The Company uses FASB Accounting Standards Update (“ASU”) No. 2009-13 (“FASB ASU 2009-13”), Multiple-Deliverable Revenue Arrangements. FASB ASU 2009-13 establishes a selling price hierarchy for determining the selling price of a deliverable, which includes: (1) vendor-specific objective evidence (“VSOE”) if available; (2) third-party evidence (“TPE”) if VSOE is not available; and (3) best estimated selling price (“BESP”), if neither VSOE nor TPE is available. Additionally, FASB ASU 2009-13 expands the disclosure requirements related to a vendor’s multiple-deliverable revenue arrangements.

The Company enters into multiple-deliverable arrangements that may include a combination of hardware components, related integration or other services. These arrangements generally do not include any performance-, cancellation-, termination- or refund-type provisions.

In accordance with the provisions of FASB ASU 2009-13, the Company allocates arrangement consideration to each deliverable in an arrangement based on its relative selling price. The Company generally expects that it will not be able to establish VSOE or TPE due to limited single element transactions and the nature of the markets in which the Company competes, and, as such, the Company typically determines its relative selling price using BESP.

The Company uses BESP in its allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact if the product or service were sold by the Company on a standalone basis.

The Company’s determination of BESP involves the consideration of several factors based on the specific facts and circumstances of each arrangement. Specifically, the Company considers the cost to produce the deliverable, the anticipated margin on that deliverable, the selling price and profit margin for similar parts, the Company’s ongoing pricing strategy and policies (as evident from the price list established and updated by management on a regular basis), the value of any enhancements that have been built into the deliverable and the characteristics of the varying markets in which the deliverable is sold.

The Company analyzes the selling prices used in its allocation of arrangement consideration at a minimum on an annual basis. Selling prices will be analyzed on a more frequent basis if a significant change in the Company’s business necessitates a more timely analysis or if the Company experiences significant variances in its selling prices.

Each deliverable within the Company’s multiple-deliverable revenue arrangements is accounted for as a separate unit of accounting under the guidance of FASB ASU 2009-13 if both of the following criteria are met: the delivered item or items have value to the customer on a standalone basis; and for an arrangement that includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered item(s) is considered probable and substantially in the control of the Company. The Company’s revenue arrangements generally do not include a general right of return relative to delivered products. The Company considers a deliverable to have standalone value if the item is sold separately by the Company or another vendor or if the item could be resold by the customer.

Deliverables not meeting the criteria for being a separate unit of accounting are combined with a deliverable that does meet that criterion. The appropriate allocation of arrangement consideration and recognition of revenue is then determined for the combined unit of accounting.

The Company also engages in long-term contracts for development, production and services activities which it accounts for consistent with FASB ASC 605-35, Accounting for Performance of Construction-Type and Certain Production-Type Contracts, and other relevant revenue recognition accounting literature. The Company considers the nature of these contracts and the types of products and services provided when determining the proper accounting for a particular contract. Generally for fixed-price contracts, other than service-type contracts, revenue is recognized primarily under the percentage of completion method or, for certain short-term contracts, by the completed contract method. Revenue from service-type fixed-price contracts is recognized ratably over the contract period or by other appropriate input or output methods to measure service provided, and contract costs are expensed as incurred. The Company establishes billing terms at the time project deliverables and milestones are agreed. Revenues recognized in excess of the amounts invoiced to clients are classified as unbilled receivables. The Company expects to bill substantially all of the unbilled receivables during fiscal 2018. The risk to the Company on a fixed-price contract is that if estimates to complete the contract change from one period to the next, profit levels will vary from period to period. For time and materials contracts, revenue reflects the number of direct labor hours expended in the performance of a contract multiplied by the contract billing rate, as well as reimbursement of other billable direct costs. For all types of contracts, the Company recognizes anticipated contract losses as soon as they become known and estimable.

The Company also considers whether contracts should be combined or segmented in accordance with the applicable criteria under GAAP. The Company combines closely related contracts when all the applicable criteria under GAAP are met. The combination of two or more contracts requires judgment in determining whether the intent of entering into the contracts was effectively to enter into a single project, which should be combined to reflect an overall profit rate. Similarly, the Company may separate a project, which may consist of a single contract or group of contracts, with varying rates of profitability, only if the applicable criteria under GAAP are met. Judgment also is involved in determining whether a single contract or group of contracts may be segmented based on how the arrangement was negotiated and the performance criteria. The decision to combine a group of contracts or segment a contract could change the amount of revenue and gross profit recorded in a given period.

The use of contract accounting requires significant judgment relative to estimating total contract revenues and costs, including assumptions relative to the length of time to complete the contract, the nature and complexity of the work to be performed, anticipated increases in wages and prices for subcontractor services and materials, and the availability of subcontractor services and materials. The Company’s estimates are based upon the professional knowledge and experience of its engineers, program managers and other personnel, who review each long-term contract monthly to assess the contract’s schedule, performance, technical matters and estimated cost at completion. Changes in estimates are applied retrospectively and when adjustments in estimated contract costs are identified, such revisions may result in current period adjustments to earnings applicable to performance in prior periods.

Contract costs also may include estimated contract recoveries for matters such as contract changes and claims for unanticipated contract costs. The Company records revenue associated with these matters only when the amount of recovery can be estimated reliably and realization is probable. Assumed recoveries for claims included in contracts in process were not material at June 30, 2017 or 2016.

The Company defines service revenues as revenue from activities that are not associated with the design, development, production, or delivery of tangible assets, software or specific capabilities sold. Examples of the Company's service revenues include: analyst services and systems engineering support, consulting, maintenance and other support, testing and installation. The Company combines its product and service revenues into a single class as service revenues are less than 10 percent of total revenues.

The Company does not provide its customers with rights of product return, other than those related to warranty provisions that permit repair or replacement of defective goods. The Company accrues for anticipated warranty costs upon product shipment. Revenues from product royalties are recognized upon invoice by the Company. Additionally, all revenues are reported net of government assessed taxes (e.g. sales taxes or value-added taxes).

CASH AND CASH EQUIVALENTS

Cash equivalents, consisting of highly liquid money market funds and U.S. government and U.S. government agency issues with original maturities of 90 days or less at the date of purchase, are carried at fair market value which approximates cost.

FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company measures at fair value certain financial assets and liabilities, including cash equivalents, restricted cash and contingent consideration. FASB ASC 820, Fair Value Measurement and Disclosures, specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs have created the following fair-value hierarchy:

Level 1—Quoted prices for identical instruments in active markets;

Level 2—Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and

Level 3—Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.

CONCENTRATION OF CREDIT RISK

Financial instruments that potentially expose the Company to concentrations of credit risk consist principally of cash, cash equivalents and accounts receivable. The Company places its cash and cash equivalents with financial institutions of high credit quality. At June 30, 2017 and 2016, the Company had $41,637 and $81,691, respectively, of cash and cash equivalents on deposit or invested with its financial and lending institutions.

The Company provides credit to customers in the normal course of business. The Company performs ongoing credit evaluations of its customers’ financial condition and limits the amount of credit extended when deemed necessary. At June 30, 2017, five customers accounted for 53% of the Company's accounts receivable, unbilled receivables and costs in excess of billings. At June 30, 2016, five customers accounted for 50% of the Company’s accounts receivable, unbilled receivables and costs in excess of billings.

INVENTORY

Inventory is stated at the lower of cost (first-in, first-out) or market value, and consists of materials, labor and overhead. On a quarterly basis, the Company evaluates inventory for net realizable value. Once an item is written down, the value becomes the new inventory cost basis. The Company reduces the value of inventory for excess and obsolete inventory, consisting of on-hand and non-cancelable on-order inventory in excess of estimated usage. The excess and obsolete inventory evaluation is based upon assumptions about future demand, product mix and possible alternative uses.

SEGMENT INFORMATION

The Company uses the management approach for segment disclosure, which designates the internal organization that is used by management for making operating decisions and assessing performance as the source of its reportable segments. The Company manages its business on the basis of one reportable segment, as a commercial provider of secure sensor and safety critical mission processing subsystems for critical defense and intelligence applications.

GOODWILL AND INTANGIBLE ASSETS

Goodwill is the amount by which the cost of the net assets obtained in a business acquisition exceeded the fair values of the net identifiable assets on the date of purchase (see Note G). Goodwill is not amortized in accordance with the requirements of FASB ASC 350, Intangibles-Goodwill and Other (“FASB ASC 350”). Goodwill is assessed for impairment at least annually, on a reporting unit basis, or when events and circumstances occur indicating that the recorded goodwill may be impaired. If the book value of a reporting unit exceeds its fair value, the implied fair value of goodwill is compared with the carrying amount of goodwill. If the carrying amount of goodwill exceeds the implied fair value, an impairment loss is recorded in an amount equal to that excess.

Intangible assets result from the Company’s various business acquisitions (see Note H) and certain licensed technologies, and consist of identifiable intangible assets, including completed technology, licensing agreements, customer relationships, trademarks, backlog, and non-compete agreements. Intangible assets are reported at cost, net of accumulated amortization and are either amortized on a straight-line basis over their estimated useful lives of up to twelve years or over the period the economic benefits of the intangible asset are consumed.

LONG-LIVED ASSETS

Long-lived assets primarily include property and equipment and acquired intangible assets. The Company regularly evaluates its long-lived assets for events and circumstances that indicate a potential impairment in accordance with FASB ASC 360, Property, Plant, and Equipment (“FASB ASC 360”). The Company reviews long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate. Each impairment test is based on a comparison of the estimated undiscounted cash flows of the asset as compared to the recorded value of the asset. If impairment is indicated, the asset is written down to its estimated fair value.

Property and equipment are the long-lived, physical assets of the Company acquired for use in the Company’s normal business operations and are not intended for resale by the Company. These assets are recorded at cost. Renewals and betterments that increase the useful lives of the assets are capitalized. Repair and maintenance expenditures that increase the efficiency of the assets are expensed as incurred. Equipment under capital lease is recorded at the present value of the minimum lease payments required during the lease period. Depreciation is based on the estimated useful lives of the assets using the straight-line method (see Note F).

As assets are retired or sold, the related cost and accumulated depreciation are removed from the accounts and any resulting gain or loss is included in the results of operations.

Expenditures for major software purchases and software developed for internal use are capitalized and depreciated using the straight-line method over the estimated useful lives of the related assets, which are generally three years. For software developed for internal use, all external direct costs for material and services and certain payroll and related fringe benefit costs are capitalized in accordance with FASB ASC 350. During fiscal 2017, 2016 and 2015, the Company capitalized $508, $0 and $0 of software development costs.

DEFERRED REVENUES AND CUSTOMER ADVANCES

Deferred revenues consist of deferred product revenue, billings in excess of revenues, and deferred service revenue. Deferred product revenue represents amounts that have been invoiced to customers, but are not yet recognizable as revenue because one or more of the conditions for revenue recognition have not been met. Billings in excess of revenues represents milestone billing arrangements on percentage of completion projects where the billings of the contract exceed recognized revenues. Deferred service revenue primarily represents amounts invoiced to customers for annual maintenance contracts or extended warranty concessions, which are recognized ratably over the term of the arrangements. Customer advances represent deposits received from customers on an order.

INCOME TAXES

The Company accounts for income taxes under FASB ASC 740, Income Taxes (“FASB ASC 740”). The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the Company’s consolidated financial statements. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial statement and tax basis of assets and liabilities using enacted tax rates for the year in which the differences are expected to reverse. The Company records a valuation allowance against net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.

FASB ASC 740 requires a two-step approach to recognizing and measuring uncertain tax positions. First, the tax position must be evaluated to determine the likelihood that it will be sustained upon external examination. If the tax position is deemed more-likely-than-not to be sustained, the tax position is then assessed to determine the amount of benefit to recognize in the financial statements. The amount of the benefit that may be recognized is the largest amount that has a greater than 50% likelihood of being realized upon ultimate settlement. The Company recognizes interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense.

PRODUCT WARRANTY ACCRUAL

The Company’s product sales generally include a 12 month standard hardware warranty. At time of product shipment, the Company accrues for the estimated cost to repair or replace potentially defective products. Estimated warranty costs are based upon prior actual warranty costs for substantially similar transactions and any specifically identified warranty requirements. Product warranty accrual is included as part of accrued expenses in the accompanying consolidated balance sheets. The following table presents the changes in the Company's product warranty accrual.



	Fiscal 2017			Fiscal 2016			Fiscal 2015
Beginning balance at July 1,	$	1,523		$	1,974		$	2,078
Warranty assumed from CES	176			—			—
Warranty assumed from Delta	30			—			—
Warranty assumed from Carve-Out Business	—			114			—
Accruals for warranties issued during the period	1,328			1,976			1,465
Settlements made during the period	(1,366		)	(2,541		)	(1,569		)
Ending balance at June 30,	$	1,691		$	1,523		$	1,974

RESEARCH AND DEVELOPMENT COSTS

Research and development costs are expensed as incurred. Research and development costs are primarily made up of labor charges and prototype material and development expenses.

STOCK-BASED COMPENSATION

Stock-based compensation cost is measured at the grant date based on the fair value of the award and is recognized as expense over the requisite service period, which generally represents the vesting period, and includes an estimate of the awards that will be forfeited. Stock-based compensation expense for the Company’s performance-based restricted stock awards are amortized over the requisite service period using graded vesting. The Company’s other restricted stock awards recognize expense over the requisite service period on a straight-line basis. The Company uses the Black-Scholes valuation model for estimating the fair value on the date of grant of stock options.

RETIREMENT OF COMMON STOCK

Stock that is repurchased or received in connection with the exercise of stock options or in order to cover tax payment obligations triggered by exercise of stock options or the vesting of restricted stock is retired immediately upon the Company’s repurchase. The Company accounts for this under the cost method and upon retirement the excess amount over par value is charged against additional paid-in capital.

NET EARNINGS PER SHARE

Basic net earnings per share is calculated by dividing net income by the weighted-average number of common shares outstanding during the period. Diluted net earnings per share computation includes the effect of shares which would be issuable upon the exercise of outstanding stock options and the vesting of restricted stock, reduced by the number of shares which are assumed to be purchased by the Company under the treasury stock method. For all periods presented, income from continuing operations is the control number for determining whether securities are dilutive or not.

Basic and diluted weighted average shares outstanding were as follows:



	Years Ended June 30,
	2017	2016	2015
Basic weighted-average shares outstanding	41,986	34,241	32,114
Effect of dilutive equity instruments	1,032	856	825
Diluted weighted-average shares outstanding	43,018	35,097	32,939

Equity instruments to purchase 16, 7 and 453 shares of common stock were not included in the calculation of diluted net earnings per share for the fiscal years ended June 30, 2017, 2016 and 2015, respectively, because the equity instruments were anti-dilutive.

ACCUMULATED OTHER COMPREHENSIVE INCOME

Accumulated other comprehensive income includes foreign currency translation adjustments and pension benefit plan adjustments. The components of accumulated other comprehensive income included $(93) and $171 of accumulated foreign currency translation adjustments for the years ended June 30, 2017 and 2016. In addition, pension benefit plan adjustments totaled $220 for the year ended June 30, 2017. There were no material accumulated net unrealized gains on investments at June 30, 2017 and 2016.

FOREIGN CURRENCY

Local currencies are the functional currency for the Company’s subsidiaries in Switzerland, United Kingdom and Japan. The accounts of foreign subsidiaries are translated using exchange rates in effect at period-end for assets and liabilities and at average exchange rates during the period for results of operations. The related translation adjustments are reported in accumulated other comprehensive income in shareholders’ equity. Gains (losses) resulting from non-U.S. currency transactions are included in other income (expense), net in the Consolidated Statements of Operations and Comprehensive Income and were immaterial for all periods presented.

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in GAAP when it becomes effective. The new standard is effective for the Company on July 1, 2018, and it does not plan to early adopt this ASU. The standard permits the use of either the retrospective or cumulative effect transition method. The Company currently intends to use the retrospective transition method upon adoption of the standard. During fiscal 2017, the Company has made significant investments in its data reporting infrastructure in order to support the reporting requirements of the standard. Throughout fiscal 2018, the Company will continue enhancing its infrastructure to capture each of the specific disclosure requirements detailed in the standard. The Company is continuing to evaluate the future impact that the adoption of the standard will have on its consolidated financial statements. However, the Company does anticipate that the additional disclosure requirements will represent a significant change from current practices.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), an amendment of the FASB Accounting Standards Codification. This ASU requires lessees to recognize a right-of-use asset and lease liability for most lease arrangements. The new standard is effective for the Company on July 1, 2019. The standard mandates a modified retrospective transition method for all entities and early adoption is permitted. The Company is evaluating the effect that ASU 2016-02 will have on its consolidated financial statements and related disclosures.

In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments, an amendment of the FASB Accounting Standards Codification. This ASU will reduce diversity in practice for classifying cash payments and receipts in the statement of cash flows for a number of common transactions. It will also clarify when identifiable cash flows should be separated versus classified based on their predominant source or use. This ASU is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The Company is evaluating the effect that ASU 2016-15 will have on its consolidated financial statements and related disclosures.

In October 2016, the FASB issued ASU No. 2016-16, Intra-Entity Transfers of Assets Other Than Inventory, an amendment of the FASB Accounting Standards Codification. This ASU requires the seller and buyer to recognize at the transaction date the current and deferred income tax consequences of intercompany asset transfers (except transfers of inventory). Under current GAAP, the seller and buyer defer the consolidated tax consequences of an intercompany asset transfer from the period of the transfer to a future period when the asset is transferred out of the consolidated group, or otherwise affects consolidated earnings. This standard will cause volatility in companies’ effective tax rates, particularly for those that transfer intangible assets to foreign subsidiaries. For public entities, the new standard is effective for annual and interim periods in fiscal years beginning after December 15, 2017. An entity may early adopt the standard but only at the beginning of an annual period for which it has not issued or made available for issuance financial statements (interim or annual). The Company is evaluating the effect that ASU 2016-16 will have on its consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, an amendment of the FASB Accounting Standards Codification. This ASU eliminates the requirement to measure the implied fair value of goodwill by assigning the fair value of a reporting unit to all assets and liabilities within that unit (“the Step 2 test”) from the goodwill impairment test. Instead, if the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to that excess, limited by the amount of goodwill in that reporting unit. For public business entities, the new standard is effective for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. The ASU requires prospective adoption and permits early adoption for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company does not expect this guidance to have a material impact to its consolidated financial statements.

In March 2017, the FASB issued ASU No. 2017-07, Compensation Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, an amendment of the FASB Accounting Standards Codification. This ASU requires employers that sponsor defined benefit pension and/or other post-retirement benefit plans to report the service cost component of net benefit cost in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. Employers are required to present the other components of net benefit costs in the income statement separately from the service cost component and outside a subtotal of income from operations. Additionally, only the service cost component of net periodic pension cost will be eligible for asset capitalization. For public entities, the new standard is effective for annual periods beginning after December 15, 2017, including interim periods within that annual period. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance. This ASU should be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic postretirement benefit cost in the income statement and prospectively, on and after the effective date, for the capitalization of the service cost component of net periodic pension cost and net periodic postretirement benefit in assets.The Company is evaluating the effect that ASU 2017-07 will have on its consolidated financial statements and related disclosures.

RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS

Effective July 1, 2016, the Company adopted FASB ASU No. 2015-01, Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items, an amendment of the FASB Accounting Standards Codification. This ASU eliminates the separate presentation of extraordinary items, net of tax and the related earnings per share, but does not affect the requirement to disclose material items that are unusual in nature or infrequently occurring. The ASU aligns GAAP more closely with International Financial Reporting Standards. The Company will continue to evaluate whether items are unusual in nature or infrequent in their occurrence for disclosure purposes and when estimating the annual effective tax rate for interim reporting purposes. Such adoption did not have any impact to the Company's consolidated financial statements.

Effective June 30, 2017, the Company adopted FASB ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, an amendment of the FASB Accounting Standards Codification. The ASU has added additional disclosure requirements to the codification. It requires management to assess, at each interim and annual reporting period, whether substantial doubt exists about an entity’s ability to continue as a going concern. Substantial doubt exists if it is probable (the “probable” threshold under GAAP has generally been interpreted to be between 75 and 80 percent) that the entity will be unable to meet its obligations as they become due within one year after the date the financial statements are issued or available to be issued (assessment date). There was not a going concern uncertainty in the current year or in the foreseeable future, and therefore this guidance did not have an impact to the Company's consolidated financial statements.

Effective July 1, 2017, the Company adopted FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory, an amendment of the FASB Accounting Standards Codification. This ASU changes the measurement principle for inventory from the lower of cost or market to lower of cost and net realizable value for entities that do not measure inventory using the last-in, first-out or retail inventory method. The ASU also eliminates the requirement for these entities to consider replacement cost or net realizable value less an approximately normal profit margin when measuring inventory. Such adoption did not have any impact to the Company's consolidated financial statements.

Acquisitions

12 Months Ended

Jun. 30, 2017

Business Combinations [Abstract]

Acquisitions

DELTA ACQUISITION

On April 3, 2017, the Company entered into a membership interest purchase agreement with Delta, pursuant to which, the Company acquired Delta on a cash-free, debt-free basis for a total purchase price of $40,500, subject to net working capital and net debt adjustments. Delta is a designer and manufacturer of high-value RF, microwave and millimeter wave sub-assemblies and components for the military, aerospace and space markets. The acquisition and transaction related expenses were funded with cash on hand.

The following table presents the net purchase price and the preliminary fair values of the assets and liabilities of Delta:



	Amounts
Consideration transferred
Cash paid at closing	$	40,500
Net purchase price	$	40,500

Estimated fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings	$	957
Inventory	4,452
Fixed assets	1,918
Other current and non-current assets	67
Current liabilities	(1,854		)
Estimated fair value of net tangible assets acquired	5,540
Estimated fair value of identifiable intangible assets	17,000
Estimated goodwill	17,960
Estimated fair value of net assets acquired	40,500
Net purchase price	$	40,500

The amounts above represent the preliminary fair value estimates as of June 30, 2017 and are subject to subsequent adjustment as the Company obtains additional information during the measurement period. The preliminary identifiable intangible asset estimates include customer relationships of $8,000 with a useful life of 9 years, developed technology of $5,900 with a useful life of 7 years and backlog of $3,100 with a useful life of 2 years. Any subsequent adjustments to these fair value estimates occurring during the measurement period will result in an adjustment to goodwill.

The goodwill of $17,960 largely reflects the potential synergies and expansion of the Company's offerings across product lines and markets complementary to the Company's existing products and markets. The Delta acquisition expands scale and breadth of the Company’s RF, microwave and millimeter wave capabilities, provides highly complementary program portfolio in missiles and munitions, deepens market penetration in core radar, electronic warfare ("EW"), and precision-guided munitions markets, and opens new growth opportunities in space launch, GPS, satellite communications and datalinks. The goodwill from this acquisition was initially reported under the MCE reporting unit.

The Company and the shareholders of Delta have agreed to treat the acquisition of Delta as an asset purchase for tax purposes by filing the required election forms under IRC Section 338(h)(10). The Company has estimated the tax value of the intangible assets from this transaction and is amortizing the amount over 15 years for tax purposes. As of June 30, 2017, the Company had $18,029 of goodwill deductible for tax purposes.

The revenues and income before income taxes from Delta included in the Company's consolidated results for the fiscal year ended June 30, 2017 were $5,435 and $805, respectively. The Company has not furnished pro forma financial information relating to Delta because such information is not material to the Company's financial results.

CES ACQUISITION

On November 4, 2016, the Company and the shareholders of CES entered into a Stock Purchase Agreement, pursuant to which, Mercury acquired CES for a total purchase price of $39,123, subject to net working capital and net debt adjustments. The acquisition and associated transaction expenses were funded with cash on hand. Based in Geneva, Switzerland, CES is a provider of embedded solutions for military and aerospace mission-critical computing applications. CES specializes in the design, development and manufacture of safety-certifiable product and subsystems solutions including: primary flight control units, flight test computers, mission computers, command and control processors, graphics and video processing and avionics-certified Ethernet and IO. CES products and solutions are used on platforms such as aerial refueling tankers and multi-mission aircraft, as well as the several types of unmanned platforms.

The following table presents the net purchase price and the preliminary fair values of the assets and liabilities of CES:



	Amounts
Consideration transferred
Cash paid at closing	$	39,123
Working capital adjustment	(330		)
Net purchase price	$	38,793

Estimated fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings	$	2,698
Inventory	8,950
Fixed assets	1,480
Other current and non-current assets	748
Current liabilities	(3,154		)
Non-current liabilities	(6,140		)
Deferred tax liabilities	(857		)
Estimated fair value of net tangible assets acquired	3,725
Estimated fair value of identifiable intangible assets	14,722
Estimated goodwill	20,346
Estimated fair value of net assets acquired	38,793
Net purchase price	$	38,793

The amounts above represent the preliminary fair value estimates as of June 30, 2017 and are subject to subsequent adjustment as the Company obtains additional information during the measurement period. The preliminary identifiable intangible asset estimates include customer relationships of $9,060 with a useful life of 9 years and developed technology of $5,662 with a useful life of 7 years. Any subsequent adjustments to these fair value estimates occurring during the measurement period will result in an adjustment to goodwill.

The goodwill of $20,346 largely reflects the potential synergies and expansion of the Company's offerings across product lines and markets complementary to the Company's existing products and markets. CES provides the Company with capabilities in mission computing, safety-critical avionics and platform management that are in demand from its customers. These new capabilities will also substantially expand Mercury’s addressable market into commercial aerospace, defense platform management, command, control, communications, computers, and intelligence ("C4I") and mission computing markets that are aligned to Mercury’s existing market focus. The acquisition is directly aligned with the Company's strategy of expanding its capabilities, services and offerings along the sensor processing chain. The goodwill from this acquisition was initially reported under the MCE reporting unit.

The revenues and income before income taxes from CES included in the Company's consolidated results for the fiscal year ended June 30, 2017 were $17,008 and $1,196, respectively. The Company has not furnished pro forma financial information relating to CES because such information is not material to the Company's financial results.

CARVE-OUT BUSINESS ACQUISITION

On March 23, 2016, the Company and Microsemi entered into a Stock Purchase Agreement, pursuant to which, Microsemi agreed to sell all the membership interests in the Carve-Out Business to the Company for $300,000 in cash on a cash-free, debt-free basis, subject to a working capital adjustment. On May 2, 2016, the transaction closed and the Company acquired the Carve-Out Business. Pursuant to the terms of the Stock Purchase Agreement, all outstanding Carve-Out Business employee stock awards that were unvested at the closing were replaced by Mercury. The replacement stock awards granted were determined based on a conversion ratio provided in the Stock Purchase Agreement. Mercury funded the acquisition with a combination of a new $200,000 bank term loan facility (see Note L) and cash on hand, which included net proceeds of approximately $92,788 raised from an underwritten common stock public offering (see Note N).

The following table presents the net purchase price and the fair values of the assets and liabilities of the Carve-Out Business:



	Amounts
Consideration transferred
Cash paid at closing	$	300,000
Value allocated to replacement awards	407
Working capital adjustment	(1,838		)
Net purchase price	$	298,569

Fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings	$	17,157
Inventory	25,477
Fixed assets	13,996
Other current and non-current assets	524
Current liabilities	(4,692		)
Non-current deferred tax liabilities	(25,449		)
Fair value of net tangible assets acquired	27,013
Fair value of identifiable intangible assets	102,800
Goodwill	168,756
Fair value of assets acquired	298,569
Net purchase price	$	298,569

On May 2, 2017, the measurement period for the Carve-Out Business expired. The identifiable intangible assets include customer relationships of $70,900, completed technology of $29,700 and backlog of $2,200.

The goodwill of $168,756 largely reflects the potential synergies and expansion of the Company's offerings across product lines and markets complementary to the Company's existing products and markets. The Carve-Out Business provides the Company with additional capability and expertise related to embedded security custom microelectronics, and microwave and radio frequency technology. The acquisition is directly aligned with the Company's strategy of expanding its capabilities, services and offerings along the sensor processing chain. The goodwill from this acquisition is reported under the AMS and MDS reporting units. As of June 30, 2016, the Company had $26,494 of goodwill deductible for tax purposes.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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+ Details

Fair Value of Financial Instruments

12 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis at June 30, 2017:



	Fair Value Measurements
	June 30, 2017		Level 1		Level 2		Level 3
Assets:
Certificates of deposit	$	1,043	$	—	$	1,043	$	—
Total	$	1,043	$	—	$	1,043	$	—

The carrying values of cash and cash equivalents, including money market funds, restricted cash, accounts receivable and payable, and accrued liabilities approximate fair value due to the short-term maturities of these assets and liabilities. The fair value of the Company’s certificates of deposit are determined through quoted prices for identical or similar instruments in markets that are not active or are directly or indirectly observable. The cost-method investment, which is presented within other non-current assets in the accompanying consolidated balance sheets, does not have a readily determinable fair value, as such the Company recorded the investment at cost and will continue to evaluate the asset for impairment on a quarterly basis.

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis at June 30, 2016:



	Fair Value Measurements
	June 30, 2016		Level 1		Level 2		Level 3
Assets:
Certificates of deposit	$	30,075	$	—	$	30,075	$	—
Total	$	30,075	$	—	$	30,075	$	—

The Company determined the face value of its long-term debt approximated fair value at June 30, 2016 due to the recent issuance and stability of interest rates during that period.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Inventory

12 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventory

Inventory was comprised of the following:



	June 30,
	2017		2016
Raw materials	$	48,645	$	31,205
Work in process	22,567		15,967
Finished goods	9,859		11,112
Total	$	81,071	$	58,284

The $22,787 increase in inventory was primarily due to the inclusion of inventory from CES and Delta. There are no amounts in inventory relating to contracts having production cycles longer than one year.

Property and Equipment

12 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment consisted of the following:



	Estimated Useful Lives (Years)	June 30,
	Estimated Useful Lives (Years)	2017			2016
Computer equipment and software	3-4	$	64,374		$	62,409
Furniture and fixtures	5	4,810			8,547
Leasehold improvements	lesser of estimated useful life or lease term	19,092			8,515
Machinery and equipment	5-10	42,193			29,078
		130,469			108,549
Less: accumulated depreciation		(78,826		)	(80,212		)
		$	51,643		$	28,337

The $23,306 increase in property and equipment was primarily due to the build-out of the Company's new corporate headquarters, integration activities associated with the Carve-Out Business, and the acquisition of CES and Delta. In fiscal 2017 and 2016, the Company retired $14,310 and $32, respectively, of computer equipment and software, furniture, and fixtures, leasehold improvements, and machinery and equipment that were no longer in use by the Company.

Depreciation expense related to property and equipment for the fiscal years ended June 30, 2017, 2016 and 2015 was $12,589, $6,900 and $6,332, respectively.

On April 20, 2007, the Company entered into a sales agreement and a lease agreement in connection with a sale-leaseback of the Company’s former headquarters in Chelmsford, Massachusetts. Pursuant to the agreements, the Company sold all land, land improvements, buildings and building improvements related to the facilities and leased back those assets. The term of the lease was ten years and included two five year options to renew, which the Company did not exercise. Under the provisions of sale-leaseback accounting, the transaction was considered a normal leaseback; thus the realized gain of $11,569 was deferred and was amortized to other income on a straight-line basis over the initial lease term.

The unamortized deferred gain of $929 at June 30, 2016 was included in accrued expenses and in the accompanying consolidated balance sheets and has been fully amortized as of June 30, 2017.

Goodwill

12 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Throughout fiscal 2017, the Company undertook a series of integration activities related to the Carve-Out Business. These integration activities included system conversions, the build-out of our U.S. Manufacturing Organization in Phoenix, insourcing of embedded sensor products manufacturing previously outsourced, retirement of legacy internal controls related to the Carve-Out Business, and integration of the acquired sites into the legacy control environment. Significant work was done through the fourth quarter of fiscal 2017 to complete these integration activities. The conclusion of these integration efforts resulted in a reorganization of the Company's reporting unit structure from MCE, MDS and the Carve-Out Business to: Sensor and Mission Processing (“SMP”), Advanced Microelectronic Solutions (“AMS”) and Mercury Defense Systems (“MDS”). This change had no effect on the Company’s operating segment, as the Chief Operating Decision Maker (“CODM”) continues to evaluate and manage the Company on the basis of one reportable segment.

The following table summarizes the changes in goodwill at the Company's three reporting units for the year ended June 30, 2016, prior to the reorganization of the Company's reporting unit structure in fiscal 2017:



	MCE		MDS		Carve-Out Business		Total
Balance at June 30, 2015	$	134,378	$	33,768	$	—	$	168,146
Goodwill arising from the LIT acquisition	—		5,638		—		5,638
Goodwill arising from the Carve-Out Business Acquisition	—		—		170,243		170,243
Balance at June 30, 2016	$	134,378	$	39,406	$	170,243	$	344,027

The following table summarizes the changes in goodwill at the Company's three reporting units from June 30, 2016 through May 31, 2017, immediately before the reorganization of the Company's reporting unit structure:



	MCE		MDS		Carve-Out Business			Total
Balance at June 30, 2016	$	134,378	$	39,406	$	170,243		$	344,027
Goodwill adjustment for the Carve-Out Business acquisition	—		—		(1,487		)	(1,487		)
Goodwill arising from the CES acquisition	20,346		—		—			20,346
Goodwill arising from the Delta acquisition	17,960		—		—			17,960
Balance at May 31, 2017	$	172,684	$	39,406	$	168,756		$	380,846

In accordance with FASB ASC 350, Intangibles-Goodwill and Other (“ASC 350”), the Company determines its reporting units based upon whether discrete financial information is available, if management regularly reviews the operating results of the component, the nature of the products offered to customers and the market characteristics of each reporting unit. A reporting unit is considered to be an operating segment or one level below an operating segment also known as a component.

The Company reviewed its analysis of its internally reorganized business in order to determine its reporting units in accordance with ASC 350. Component level financial information is now reviewed by management at SMP, AMS and MDS. Accordingly, these were determined to be the Company’s new reporting units.

In fiscal 2017, after its reorganization, the Company reassigned goodwill to the businesses in the affected reporting units based on their relative fair values in accordance with ASC 350. There were no changes in the total carrying amount of goodwill for the one month ended June 30, 2017 after reallocation. The carrying amounts of goodwill by reporting unit at June 30, 2017 are $116,003, $217,956, and $46,887 for SMP, AMS and MDS, respectively.

The change in reporting units qualified as a triggering event and required goodwill to be tested for impairment. As required by ASC 350, the Company analyzed goodwill for impairment immediately prior to and immediately subsequent to the reorganization. As a result of these analyses, it was determined that goodwill was not impaired either prior to or subsequent to the reorganization.

Intangible Assets

12 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible assets consisted of the following:



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
June 30, 2017
Customer relationships	$	117,630	$	(31,533	)	$	86,097	10.0 years
Licensing agreements and patents	1,131		(277		)	854		3.7 years
Completed technologies	44,503		(6,079		)	38,424		7.9 years
Backlog	5,430		(1,768		)	3,662		2.0 years
	$	168,694	$	(39,657	)	$	129,037
June 30, 2016
Customer relationships	$	105,370	$	(23,824	)	$	81,546	9.9 years
Licensing agreements and patents	756		(38		)	718		4.0 years
Completed technologies	35,840		(3,545		)	32,295		7.6 years
Backlog	2,330		(216		)	2,114		2.0 years
	$	144,296	$	(27,623	)	$	116,673

Estimated future amortization expense for intangible assets remaining at June 30, 2017 is as follows:



	Year Ending June 30,
2018	$	21,722
2019	17,542
2020	14,767
2021	14,165
2022	14,165
Thereafter	46,676
Total future amortization expense	$	129,037

The following table summarizes the preliminary estimated fair value of acquired intangible assets arising as a result of the Delta acquisition. These assets are included in the Company's gross and net carrying amounts as of June 30, 2017.



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	8,000	$	(225	)	$	7,775	9.1 years
Completed technologies	5,900		(148		)	5,752		10.0 years
Backlog	3,100		(388		)	2,712		2.0 years
	$	17,000	$	(761	)	$	16,239

The following table summarizes the preliminary estimated fair value of acquired intangible assets arising as a result of the CES acquisition. These assets are included in the Company's gross and net carrying amounts as of June 30, 2017.



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	9,060	$	(681	)	$	8,379	9.0 years
Completed technologies	5,662		(547		)	5,115		7.0 years
	$	14,722	$	(1,228	)	$	13,494

The following table summarizes the fair value of acquired intangible assets arising as a result of the Carve-Out Business acquisition. These assets are included in the Company's gross and net carrying amounts as of June 30, 2017.



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	70,900	$	(7,856	)	$	63,044	11.5 years
Completed technologies	29,700		(4,690		)	25,010		7.8 years
Backlog	2,200		(1,283		)	917		2.0 years
	$	102,800	$	(13,829	)	$	88,971

Restructuring Plan

12 Months Ended

Jun. 30, 2017

Restructuring and Related Activities [Abstract]

Restructuring Plan

Restructuring

During the fourth quarter of fiscal 2017, the Company initiated a plan to close its Manteca, California facility as a result of the acquisition of Delta. The Company incurred $910 of severance and related expenses in conjunction with the elimination of 33 positions primarily in operations related to the planned closure of the facility. Additionally, the Company incurred $1,042 in restructuring expenses related to other various restructuring events during fiscal 2017.

During fiscal 2016, the Company incurred restructuring and other charges of $1,240, primarily related to executive severance and facility consolidation.

During fiscal 2015, the Company incurred restructuring and other charges of $3,175 as the Company completed its acquisition integration plan primarily associated with the Micronetics, Inc. acquisition. Additionally, during the fourth quarter of fiscal 2015, the Company eliminated 16 positions, primarily in operations.

All of the restructuring and other charges are classified as operating expenses in the consolidated statements of operations and any remaining severance obligations are expected to be paid within the next twelve months. The remaining restructuring liability is classified as accrued expenses in the consolidated balance sheets.

The following table presents the detail of expenses for the Company’s restructuring plans:



	Severance & Related			Facilities & Other			Total
Restructuring liability at June 30, 2015	$	657		$	1,335		$	1,992
Restructuring charges	752			589			1,341
Cash paid	(1,118		)	(1,188		)	(2,306		)
Reversals (*)	(101		)	—			(101		)
Restructuring liability at June 30, 2016	190			736			926
Restructuring charges	1,706			253			1,959
Cash paid	(524		)	(989		)	(1,513		)
Reversals (*)	(7		)	—			(7		)
Restructuring liability at June 30, 2017	$	1,365		$	—		$	1,365

(*) Reversals result from the unused outplacement services and operating costs.

Income Taxes

12 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

The components of income from continuing operations before income taxes and income tax expense were as follows:



	Year Ended June 30,
	2017			2016			2015
Income from continuing operations before income taxes:
United States	$	30,499		$	25,194		$	18,443
Foreign	569			92			352
	$	31,068		$	25,286		$	18,795
Tax provision (benefit):
Federal:
Current	$	11,476		$	6,707		$	4,267
Deferred	(7,645		)	(2,627		)	(458		)
	$	3,831		$	4,080		$	3,809
State:
Current	$	3,650		$	1,839		$	1,372
Deferred	(1,684		)	(424		)	(921		)
	$	1,966		$	1,415		$	451
Foreign:
Current	$	240		$	59		$	58
Deferred	156			(10		)	48
	396			49			106
	$	6,193		$	5,544		$	4,366

The following is the reconciliation between the statutory federal income tax rate and the Company’s effective income tax rate for continuing operations:



	Year Ended June 30,
	2017		2016		2015
Tax provision at federal statutory rates	35.0	%	35.0	%	35.0	%
State income tax, net of federal tax benefit	4.9		5.0		4.9
Research and development credits	(6.1	)	(8.4	)	(4.8	)
Excess tax benefits on stock compensation	(13.1	)	(4.4	)	—
Domestic manufacturing deduction	(3.9	)	(3.5	)	(3.2	)
Income from legal settlement excluded from taxable income	—		(2.8	)	—
Deemed repatriation of foreign earnings	(0.1	)	(0.2	)	(0.4	)
Foreign income tax rate differential	0.2		—		—
Equity compensation	0.6		0.3		(0.1	)
Officers' compensation	1.2		2.3		2.8
Deferred tax asset and liability adjustments	—		—		(4.2	)
Change in state tax rates	—		—		(3.1	)
Acquisition costs	0.9		—		—
Reserves for tax contingencies	(0.6	)	(3.2	)	(5.0	)
Other	0.9		1.8		1.3
	19.9	%	21.9	%	23.2	%

The components of the Company’s net deferred tax liabilities for continuing operations were as follows:



	June 30,
	2017			2016
Deferred tax assets:
Inventory valuation and receivable allowances	$	13,845		$	12,768
Accrued compensation	4,555			3,267
Equity compensation	4,858			3,201
Federal and state research and development tax credit carryforwards	13,415			15,870
Gain on sale-leaseback	—			371
Other accruals	2,125			1,570
Deferred compensation	1,606			—
Capital loss carryforwards	3,562			3,562
Other temporary differences	1,500			4,011
	45,466			44,620
Valuation allowance	(16,570		)	(18,472		)
Total deferred tax assets	28,896			26,148
Deferred tax liabilities:
Prepaid expenses	(481		)	(773		)
Property and equipment	(3,749		)	(2,451		)
Intangible assets	(28,163		)	(33,826		)
Tax method of accounting change	(285		)	(570		)
Other temporary differences	(441		)	(370		)
Total deferred tax liabilities	(33,119		)	(37,990		)
Net deferred tax (liabilities) assets	$	(4,223	)	$	(11,842	)

As reported:
Deferred tax assets	$	633		$	—
Deferred tax liabilities	(4,856		)	(11,842		)
	$	(4,223	)	$	(11,842	)

At June 30, 2017, the Company evaluated the need for a valuation allowance on deferred tax assets. In assessing whether the deferred tax assets are realizable, management considered whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the Company's past operating results, its forecast of future earnings, future taxable income, and tax planning strategies. The Company continues to conclude that it is more likely than not that most domestic deferred tax assets would be realizable based on recent financial performance, projected future taxable income and the reversal of existing deferred tax liabilities.

The Company continues to record a full valuation allowance on capital loss carryforwards and certain state research and development credits as of June 30, 2017 as management continues to believe that it is not more likely than not that these deferred tax assets would be realized. Any future reversals of the valuation allowance will impact income tax expense.

The Company had federal research and development credit carryforwards of $406, which will expire in 2033. The Company had state research and development credit carryforwards of $13,008, which will expire from 2017 through 2032.

Upon consideration of changing business conditions and cash position in its foreign subsidiaries, management has determined that it does not need to indefinitely reinvest the earnings of certain foreign subsidiaries. Therefore, the Company has accrued deferred taxes in association with $794 in undistributed foreign earnings and profits.

The Company files income tax returns in all jurisdictions in which it operates. The Company has established reserves to provide for additional income taxes that management believes will more likely than not be due in future years as these previously filed tax returns are audited. These reserves have been established based upon management’s assessment as to the potential exposures. All tax reserves are analyzed quarterly and adjustments are made as events occur and warrant modification.

The changes in the Company’s reserves for unrecognized income tax benefits are summarized as follows:



	Year Ended June 30,
	2017			2016
Unrecognized tax benefits, beginning of period	$	1,566		$	2,190
Increases for previously recognized positions	46			79
Settlements of previously recognized positions	(793		)	—
Reductions as a result of a lapse of the applicable statute of limitations	(273		)	—
Increases for currently recognized positions	384			302
Reductions for previously recognized positions deemed effectively settled	—			(681		)
Reductions for previously recognized positions	(126		)	(324		)
Unrecognized tax benefits, end of period	$	804		$	1,566

The $804 of unrecognized tax benefits as of June 30, 2017, if released, would reduce income tax expense.

The Company’s major tax jurisdiction is the U.S. and the open tax years are fiscal 2014 through 2017.

The Internal Revenue Service (the “IRS”) accepted the final examination report during the fourth quarter of fiscal year 2017 in connection with the IRS’s examination of the Company’s consolidated federal income tax returns for the fiscal year 2013, which resolved various tax matters for the Company. As a result of the acceptance, the Company recorded a $273 income tax benefit attributable to the reversal of tax reserves and $793 for amounts previously reserved that were settled through the examination process. The Company received a refund of $1,598 during July 2017 in connection with the conclusion of the IRS examination.

The Company includes interest and penalties related to unrecognized tax benefits within the provision for income taxes. As of June 30, 2017 and 2016, the total amount of gross interest and penalties accrued was $54 and $258, respectively. In connection with tax matters, the Company recognized interest and penalty expense in fiscal 2017, 2016 and 2015 of $30, $204 and $26, respectively.

Commitments and Contingencies

12 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

LEGAL CLAIMS

The Company is subject to litigation, claims, investigations and audits arising from time to time in the ordinary course of business. Although legal proceedings are inherently unpredictable, the Company believes that it has valid defenses with respect to any matters currently pending against the Company and intends to defend itself vigorously. The outcome of these matters, individually and in the aggregate, is not expected to have a material impact on the Company's cash flows, results of operations, or financial position.

INDEMNIFICATION OBLIGATIONS

The Company's standard product sales and license agreements entered into in the ordinary course of business typically contain an indemnification provision pursuant to which the Company indemnifies, holds harmless, and agrees to reimburse the indemnified party for losses suffered or incurred by the indemnified party in connection with any patent, copyright or other intellectual property infringement claim by any third party with respect to the Company's products. Such provisions generally survive termination or expiration of the agreements. The potential amount of future payments the Company could be required to make under these indemnification provisions is, in some instances, unlimited.

PURCHASE COMMITMENTS

As of June 30, 2017, the Company has entered into non-cancelable purchase commitments for certain inventory components and services used in its normal operations. The purchase commitments covered by these agreements are for less than one year and aggregate to $59,173.

LEASE COMMITMENTS

The Company leases certain facilities, machinery and equipment under various cancelable and non-cancelable operating leases that expire at various dates through fiscal 2029. The leases contain various renewal options. Rental charges are subject to escalation for increases in certain operating costs of the lessor. For tenant improvement allowances and rent holidays, the Company records a deferred rent liability on the consolidated balance sheets and amortizes the deferred rent over the terms of the leases as reductions to rent expense on the consolidated statements of operations. Rental expense during the fiscal years ended June 30, 2017, 2016, and 2015 was $7,774, $4,015 and $3,777, respectively. Minimum lease payments under the Company’s non-cancelable operating leases are as follows:



	Year Ending June 30,
2018	$	6,139
2019	5,595
2020	5,208
2021	4,291
2022	3,387
Thereafter	18,897
Total minimum lease payments	$	43,517

OTHER

As part of the Company's strategy for growth, the Company continues to explore acquisitions or strategic alliances. The associated acquisition costs incurred in the form of professional fees and services may be material to the future periods in which they occur, regardless of whether the acquisition is ultimately completed.

The Company may elect from time to time to purchase and subsequently retire shares of common stock in order to settle an individual employees’ tax liability associated with vesting of a restricted stock award or exercise of stock options. These transactions would be treated as a use of cash in financing activities in the Company's statement of cash flows.

Debt	12 Months Ended
Debt	Jun. 30, 2017
Debt Disclosure [Abstract]
Debt	Debt Revolving Credit Facilities On May 2, 2016, the Company and certain of its subsidiaries, as guarantors, entered into a Credit Agreement (the “Credit Agreement”) with a syndicate of commercial banks and Bank of America, N.A acting as the administrative agent. The Credit Agreement provided for a $200,000 term loan facility (“the Term Loan”) and a $100,000 revolving credit facility (“Revolver”). In connection with the issuance of Term Loan, the Company incurred $8,026 of debt issuance costs, which were recorded as a direct reduction to long-term debt on the face of the consolidated balance sheets. The debt issuance costs were amortized to non-cash interest expense using the effective interest method over the term of the Term Loan. On June 27, 2017, the Company amended the Credit Agreement to increase and extend the borrowing capacity of the Revolver to $400,000 expiring in June 2022 (“the Amended Credit Agreement”). In connection with the amendment, the Company also repaid the remaining principal and accrued and unpaid interest outstanding on the Term Loan using cash on hand. The Company evaluated the amended Credit Agreement under FASB ASC 470, Debt, and determined that the amendment represented a modification of the Credit Agreement. Accordingly, the remaining $6,522 in unamortized debt issuance costs at June 27, 2017, in addition to $591 in new fees paid to the syndicate of lenders in connection with the amendment, will be amortized to non-cash interest expense on a straight line basis over the new term of the Revolver. The Revolver remained undrawn at June 30, 2017, other than $5,897 of outstanding letters of credit. Maturity The Revolver has a five year maturity. Interest Rates and Fees Borrowings under the Revolver bear interest, at the Company’s option, at floating rates tied to LIBOR or the prime rate plus an applicable percentage. The applicable percentage has initially been set at LIBOR plus 1.375% and in future fiscal quarters will be established pursuant to a pricing grid based on the Company's total net leverage ratio. In addition to interest on the aggregate outstanding principal amounts of any borrowings, the Company will also pay a quarterly commitment fee on the unutilized commitments under the Revolver, which fee has initially been set at 0.25% per annum and in future fiscal quarters will be established pursuant to a pricing grid based on the Company's total net leverage ratio. The Company will also pay customary letter of credit and agency fees. Covenants and Events of Default The Amended Credit Agreement provides for customary negative covenants. The Amended Credit Agreement also requires the Company to comply with certain financial covenants, including a quarterly minimum consolidated cash interest charge ratio test and a quarterly maximum consolidated total net leverage ratio test. The Amended Credit Agreement also provides for customary representations and warranties, affirmative covenants and events of default. If an event of default occurs, the lenders under the Amended Credit Agreement will be entitled to take various actions, including the termination of unutilized commitments, the acceleration of amounts outstanding under the Amended Credit Agreement and all actions permitted to be taken by a secured creditor. As of June 30, 2017, the Company was in compliance with all covenants and conditions under the Amended Credit Agreement. Guarantees and Security The Company's obligations under the Amended Credit Agreement are guaranteed by certain of its material domestic wholly-owned restricted subsidiaries (the “Guarantors”). The obligations of both the Company and the Guarantors are secured by a perfected security interest in substantially all of the assets of the Company and the Guarantors, in each case, now owned or later acquired, including a pledge of all of the capital stock of substantially all of its domestic wholly-owned restricted subsidiaries and 65% of the capital stock of certain of its foreign restricted subsidiaries, subject in each case to the exclusion of certain assets and additional exceptions.

Employee Benefit Plans

12 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

Pension Plan

With the acquisition of CES on November 4, 2016, the Company assumed a pension plan (the "Plan") for its Swiss employees, which is administered by an independent pension fund. The Plan is mandated by Swiss law and meets the criteria for a defined benefit plan under ASC 715, Compensation—Retirement Benefits (“ASC 715”), since participants of the Plan are entitled to a defined rate of return on contributions made. The independent pension fund is a multi-employer plan with unrestricted joint liability for all participating companies for which the Plan’s overfunding or underfunding is allocated to each participating company based on an allocation key determined by the Plan.

The Company recognizes a net asset or liability for the Plan equal to the difference between the projected benefit obligation of the Plan and the fair value of the Plan’s assets as required by ASC 715. The funded status may vary from year to year due to changes in the fair value of the Plan’s assets and variations on the underlying assumptions of the projected benefit obligation of the Plan.

On January 1, 2017, the Company changed pension providers. The Company's results contain the effects of the change in pension provider as prior service costs. These prior service costs will be amortized from other comprehensive income to net periodic benefit costs over approximately 10 years. At June 30, 2017, the accumulated benefit obligation of the Plan equals the fair value of the Plan's assets. The Plan's funded status at June 30, 2017 was a net liability of $6,601, which is recorded in other non-current liabilities on the consolidated balance sheets. The Company recorded a net gain of $220 in accumulated other comprehensive income during the year ended June 30, 2017. The Company's total expected employer contributions to the Plan during fiscal 2018 are $539.

The following table reflects the total pension benefits expected to be paid from the Plan, which is funded from contributions by participants and the Company.



	Year Ended June 30,
2018	$	526
2019	678
2020	800
2021	497
2022	622
Thereafter (next 5 years)	3,928
Total	$	7,051

The following table outlines the components of net periodic benefit cost of the Plan for the year ended June 30, 2017:



	Year Ended June 30, 2017
Service cost	$	557
Interest cost	73
Expected return on assets	(105		)
Amortization of prior service cost	20
Net periodic benefit cost	$	545

The following table reflects the related actuarial assumptions used to determine net periodic benefit cost of the Plan for the year ended June 30, 2017:



	Year Ended June 30, 2017
Discount rate	0.70	%
Expected rate of return on Plan assets	1.50	%
Expected inflation	1.00	%
Rate of compensation increases	1.00	%

The calculation of the projected benefit obligation ("PBO") utilized BVG 2015 Generational data for assumptions related to the mortality rates, disability rates, turnover rates, and early retirement ages. Assumptions used to determine the year-end pension benefit obligation is the discount rate of 0.70% and rate of compensation increases of 1.00%.

The PBO represents the present value of Plan benefits earned through the end of the year, with an allowance for future salary and pension increases as well as turnover rates. The following table presents the change in projected benefit obligation for the period presented:



	Year Ending June 30, 2017
Projected benefit obligation at November 4, 2016	$	17,086
Service cost	557
Interest cost	73
Employee contributions	581
Actuarial gain	(598		)
Benefits paid	(563		)
Plan amendment	390
Projected benefit obligation at end of year	$	17,526

The following table presents the change in Plan assets for the period presented:



	Year Ending June 30, 2017
Fair value of plan assets at November 4, 2016	$	10,459
Actual return on Plan assets	100
Company contributions	348
Employee contributions	581
Benefits paid	(563		)
Fair value of plan assets at end of year	$	10,925

The following table presents the Company's reconciliation of funded status for the period presented:



	Year Ended June 30, 2017
Projected benefit obligation at end of year	$	17,526
Fair value of plan assets at end of year	10,925
Funded status	$	(6,601	)

The Company did not recognize any (gain) loss from other comprehensive income ("OCI") in its consolidated results of operations during the year ended June 30, 2017. The Company does not expect to recognize any (gain) loss from OCI for the year ended June 30, 2018.

The fair value of Plan assets were $10,925 at June 30, 2017. The Plan is denominated in a foreign currency, the Swiss Franc, which can have an impact on the fair value of Plan assets. The Plan was not subject to material fluctuations during year ended June 30, 2017. The Plan’s assets are administered by an independent pension fund foundation (the “foundation”). As of June 30, 2017, the foundation has invested the assets of the Plan in various investments vehicles, including cash, real estate, equity securities, and bonds. The investments are measured at fair value using a mix of Level 1, Level 2 and Level 3 inputs.

401(k) Plan

The Company maintains a qualified 401(k) plan (the “401(k) Plan”) for its U.S. employees. During fiscal 2017, 2016 and 2015, the Company matched employee contributions up to 3% of eligible compensation. The Company may also make optional contributions to the plan for any plan year at its discretion. Expense recognized by the Company for matching contributions related to the 401(k) plan was $3,206, $1,874 and $1,934 during the fiscal years ended June 30, 2017, 2016, and 2015, respectively.

Shareholders' Equity	12 Months Ended
Shareholders' Equity	Jun. 30, 2017
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity PREFERRED STOCK The Company is authorized to issue 1,000 shares of preferred stock with a par value of $0.01 per share. FOLLOW-ON EQUITY OFFERINGS On January 26, 2017, the Company announced the commencement of an underwritten public offering of its common stock, par value $0.01 per share. On February 1, 2017, the Company closed the offering, including the full over-allotment allocation, selling an aggregate of 6,900 shares of common stock at a price to the public of $33.00 for total net proceeds of $215,725. On April 4, 2016, the Company announced the commencement of an underwritten public offering of its common stock, par value $0.01 per share. On April 13, 2016, the Company closed the offering, including the full over-allotment allocation, selling an aggregate of 5,175 shares of common stock at a price to the public of $19.25 for total net proceeds of $92,788.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Stock-Based Compensation

12 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

STOCK OPTION PLANS

The number of shares authorized for issuance under the Company’s 2005 Stock Incentive Plan, as amended and restated (the “2005 Plan”), is 15,252 shares at June 30, 2017. As reflected in the Company's registration statement on Form S-8 filed on February 4, 2016, the Company's number of shares authorized for issuance under the 2005 Plan increased by 2 shares as a result of forfeitures, cancellations and/or terminations from the Company's 1997 Stock Option Plan. The 2005 Plan provides for the grant of non-qualified and incentive stock options, restricted stock, stock appreciation rights and deferred stock awards to employees and non-employees. All stock options are granted with an exercise price of not less than 100% of the fair value of the Company’s common stock at the date of grant and the options generally have a term of seven years. There were 2,559 shares available for future grant under the 2005 Plan at June 30, 2017.

As part of the Company's ongoing annual equity grant program for employees, the Company grants performance-based restricted stock awards to certain executives pursuant to the 2005 Plan. Performance awards vest based on the requisite service period subject to the achievement of specific financial performance targets. Based on the performance targets, some of these awards require graded vesting which results in more rapid expense recognition compared to traditional time-based vesting over the same vesting period. The Company monitors the probability of achieving the performance targets on a quarterly basis and may adjust periodic stock compensation expense accordingly. The performance targets include: (i) the achievement of internal performance targets only, and (ii) the achievement of internal performance targets in relation to a peer group of companies.

EMPLOYEE STOCK PURCHASE PLAN

The number of shares authorized for issuance under the Company’s 1997 Employee Stock Purchase Plan, as amended and restated (“ESPP”), is 1,800 shares. Under the ESPP, rights are granted to purchase shares of common stock at 85% of the lesser of the market value of such shares at either the beginning or the end of each six-month offering period. The ESPP permits employees to purchase common stock through payroll deductions, which may not exceed 10% of an employee’s compensation as defined in the ESPP. The number of shares issued under the ESPP during fiscal years 2017, 2016, and 2015 was 96, 88 and 79, respectively. Shares available for future purchase under the ESPP totaled 302 at June 30, 2017.

STOCK OPTION AND AWARD ACTIVITY

The following table summarizes activity of the Company’s stock option plans since June 30, 2015:



	Options Outstanding
	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value as of 6/30/2017
Outstanding at June 30, 2015	830		$	13.43	1.66
Granted	—		—
Exercised	(524	)	13.12
Cancelled	(48	)	17.25
Outstanding at June 30, 2016	258		$	13.34	1.06
Granted	—		—
Exercised	(207	)	13.29
Cancelled	—		—
Outstanding at June 30, 2017	51		$	13.53	0.60	$	1,442
Vested and expected to vest at June 30, 2017	51		$	13.53	0.60	$	1,442
Exercisable at June 30, 2017	51		$	13.53	0.60	$	1,442

The intrinsic value of the options exercised during fiscal years 2017, 2016, and 2015 was $3,762, $1,976 and $3,373, respectively. Non-vested stock options are subject to the risk of forfeiture until the fulfillment of specified conditions. As of June 30, 2017 and 2016, there was $0 of total unrecognized compensation cost related to non-vested options granted under the Company’s stock plans. There were no stock options granted during fiscal years 2017, 2016 or 2015.

The following table summarizes the status of the Company’s non-vested restricted stock awards since June 30, 2015:



	Non-Vested Restricted Stock Awards
	Number of Shares		Weighted Average Grant Date Fair Value
Outstanding at June 30, 2015	1,866		$	10.72
Granted	667		16.26
Vested	(743	)	10.93
Forfeited	(124	)	11.70
Outstanding at June 30, 2016	1,666		$	13.09
Granted	718		24.72
Vested	(769	)	11.94
Forfeited	(51	)	15.02
Outstanding at June 30, 2017	1,564		$	18.93

The total fair value of restricted stock awards vested during fiscal year 2017, 2016, and 2015 was $19,402, $12,185 and $9,078, respectively.

Non-vested restricted stock awards are subject to the risk of forfeiture until the fulfillment of specified conditions. As of June 30, 2017, there was $12,160 of total unrecognized compensation cost related to non-vested restricted stock awards granted under the Company’s stock plans that is expected to be recognized over a weighted-average period of 1.5 years from June 30, 2017. As of June 30, 2016, there was $10,938 of total unrecognized compensation cost related to non-vested restricted stock awards granted under the Company’s stock plans that is expected to be recognized over a weighted-average period of 1.6 years from June 30, 2016.

STOCK-BASED COMPENSATION EXPENSE

The Company recognizes expense for its share-based payment plans in the consolidated statements of operations for the fiscal years 2017, 2016, and 2015 in accordance with FASB ASC 718. The Company had $194 and $93 of capitalized stock-based compensation expense on the Consolidated Balance Sheet as of June 30, 2017 and 2016. In the prior years, the Company did not capitalize any such costs on the consolidated balance sheets, as such costs that qualified for capitalization were not material. Under the fair value recognition provisions of FASB ASC 718, stock-based compensation cost is measured at the grant date based on the value of the award and is recognized as expense over the service period. The following table presents share-based compensation expenses from continuing operations included in the Company’s consolidated statement of operations:



	Year Ended June 30,
	2017			2016			2015
Cost of revenues	$	531		$	441		$	493
Selling, general and administrative	13,212			7,864			6,751
Research and development	1,598			1,269			1,396
Share-based compensation expense before tax	15,341			9,574			8,640
Income taxes	(5,874		)	(3,727		)	(3,332		)
Share-based compensation expense, net of income taxes	$	9,467		$	5,847		$	5,308

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Operating Segment, Geographic Information and Significant Customers

12 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Operating Segment, Geographic Information and Significant Customers

Operating segments are defined as components of an enterprise evaluated regularly by the Company's chief operating decision maker (“CODM”) in deciding how to allocate resources and assess performance. The Company is comprised of one operating and reportable segment. The Company utilized the management approach for determining its operating segment in accordance with FASB ASC 280, Segment Reporting.

The geographic distribution of the Company’s revenues as determined by order origination based on the country in which the Company's legal subsidiary is domiciled is summarized as follows:



	US		Europe		Asia Pacific		Eliminations			Total
YEAR ENDED JUNE 30, 2017
Net revenues to unaffiliated customers	$	380,538	$	22,242	$	5,808	$	—		$	408,588
Inter-geographic revenues	7,637		44		—		(7,681		)	—
Net revenues	$	388,175	$	22,286	$	5,808	$	(7,681	)	$	408,588
Identifiable long-lived assets (1)	$	50,340	$	1,288	$	15	$	—		$	51,643
YEAR ENDED JUNE 30, 2016
Net revenues to unaffiliated customers	$	259,781	$	5,464	$	4,909	$	—		$	270,154
Inter-geographic revenues	7,911		447		—		(8,358		)	—
Net revenues	$	267,692	$	5,911	$	4,909	$	(8,358	)	$	270,154
Identifiable long-lived assets (1)	$	28,187	$	127	$	23	$	—		$	28,337
YEAR ENDED JUNE 30, 2015
Net revenues to unaffiliated customers	$	229,849	$	2,076	$	2,922	$	—		$	234,847
Inter-geographic revenues	2,806		475		—		(3,281		)	—
Net revenues	$	232,655	$	2,551	$	2,922	$	(3,281	)	$	234,847
Identifiable long-lived assets (1)	$	13,127	$	68	$	31	$	—		$	13,226

(1) Identifiable long-lived assets exclude goodwill and intangible assets.

In recent years, the Company completed a series of acquisitions that changed its technological capabilities, applications and end markets. As these acquisitions and changes occurred, the Company increased the proportion of its revenue derived from the sale of components in different technological areas, and also increased the amount of revenue associated with combining technologies into more complex and diverse products including modules, sub-assemblies and integrated subsystems. The following tables present revenue consistent with the Company's strategy of expanding its technological capabilities and program content.

The following table presents the Company's net revenue by end market for the periods presented:



	Year Ended June 30,
	2017		2016		2015
Domestic (1)	$	341,699	$	220,253	$	189,596
International/Foreign Military Sales (2)	66,889		49,901		45,251
Total Net Revenue	$	408,588	$	270,154	$	234,847

(1) Domestic revenues consist of sales where the end user is within the U.S., as well as sales to prime defense contractor customers where the ultimate end user location is not defined.

(2) International/Foreign Military Sales consist of sales to U.S. prime defense contractor customers where the end user is outside the U.S., foreign military sales through the U.S. government, and direct sales to non-U.S. based customers intended for end use outside of the U.S.

The following table presents the Company's net revenue by end application for the periods presented:



	Year Ended June 30,
	2017		2016		2015
Radar (1)	$	150,441	$	140,289	$	143,475
Electronic Warfare (2)	106,446		72,118		51,419
Other (3)	151,701		57,747		39,953
Total Net Revenue	$	408,588	$	270,154	$	234,847

(1) Radar includes end-use applications where radio frequency signals are utilized to detect, track, and identify objects.

(2) Electronic Warfare includes end-use applications comprising the offensive and defensive use of the electromagnetic spectrum.

(3) Other products include all end markets other than Radar and Electronic Warfare. Examples include but are not limited to various commercial and other end-use applications and technologies, as well as various component and other sales where the end use is not specified.

The following table below the Company's net revenue by product grouping for the periods presented:



	Year Ended June 30,
	2017		2016		2015
Components (1)	$	105,669	$	31,252	$	15,543
Modules and Sub-assemblies (2)	161,973		126,777		107,922
Integrated Subsystems (3)	140,946		112,125		111,382
Total Net Revenue	$	408,588	$	270,154	$	234,847

(1) Components include technology elements typically performing a single, discrete technological function, which when physically combined with other components may be used to create a module or sub-assembly. Examples include but are not limited to power amplifiers and limiters, switches, oscillators, filters, equalizers, digital and analog converters, chips, MMICs (monolithic microwave integrated circuits), and memory and storage devices.

(2) Modules and Sub-assemblies include combinations of multiple functional technology elements and/or components that work together to perform multiple functions but are typically resident on or within a single board or housing. Modules and sub-assemblies may in turn be combined to form an integrated subsystem. Examples of modules and sub-assemblies include but are not limited to embedded processing modules, embedded processing boards, switch fabric boards, high speed input/output boards, digital receiver boards, graphics and video processing and Ethernet and IO boards, multi-chip modules, integrated radio frequency and microwave multi-function assemblies, tuners, and transceivers.

(3) Integrated Subsystems include multiple modules and/or sub-assemblies combined with a backplane or similar functional element and software to enable a solution. These are typically but not always integrated within a chassis and with cooling, power and other elements to address various requirements and are also often combined with additional technologies for interaction with other parts of a complete system or platform. Integrated subsystems also include spare and replacement modules and sub-assemblies sold as part of the same program for use in or with integrated subsystems sold by the Company.

Customers comprising 10% or more of the Company’s revenues for the periods shown below are as follows:



	Year Ended June 30,
	2017		2016		2015
Lockheed Martin Corporation	20	%	23	%	20	%
Raytheon Company	16		20		37
	36	%	43	%	57	%

While the Company typically has customers from which it derives 10% or more of its revenue, the sales to each of these customers are spread across multiple programs and platforms. Programs comprising 10% or more of the Company’s revenues for the periods shown below are as follows:



	Year Ended June 30,
	2017		2016		2015
SEWIP	*		12	%	*
Aegis	*		10	%	12	%
Patriot	*		*		18	%
F-35	*		*		16	%
	—	%	22	%	46	%

* Indicates that the amount is less than 10% of the Company's revenues for the respective period. No programs were in excess of 10% of the Company's revenues for fiscal 2017.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ Details

Discontinued Operations

12 Months Ended

Jun. 30, 2017

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

In fiscal 2014, the Company's MIS business met the "held for sale" criteria in accordance with FASB ASC 205. As the Company did not anticipate continuing involvement in the operations of MIS after its divestiture, the MIS operating results have been reported as a discontinued operation for all periods presented. On January 23, 2015, the Company completed the sale of MIS for approximately $1,600. The sale resulted in net proceeds of $885 and a loss on disposal of $892, which is reflected within discontinued operations of the Company's accompanying consolidated financial statements. The Company does not have continuing involvement in the operations of MIS after its divestiture.

The amounts reported in loss from discontinued operations, net of income taxes were as follows:



	For the Year Ended June 30,
	2015
Net revenues of discontinued operations	$	3,493
Costs of discontinued operations:
Cost of revenues	2,385
Selling, general and administrative	1,958
Research and development	305
Amortization of intangible assets	279
Restructuring and other charges	—
Impairment of goodwill	2,283
Loss from discontinued operations before income taxes	(3,717		)
Loss on disposal of discontinued operations before income taxes	(892		)
Tax benefit	(549		)
Loss from discontinued operations, net of income taxes	$	(4,060	)

There were no balances for the assets and liabilities of the discontinued operations at June 30, 2017 and 2016.

The depreciation, amortization, capital expenditures and significant operating and investing non-cash items of the discontinued operations were as follows:



	For the Year Ended June 30, 2015
	For the Year Ended June 30, 2015
Depreciation	$	100
Amortization of intangible assets	$	279
Capital expenditures	$	—
Impairment of goodwill	$	2,283
Stock-based compensation expense	$	88

- Definition

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5A
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5D
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760

+ Details

Subsequent Events	12 Months Ended
Subsequent Events	Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The Company has evaluated subsequent events from the date of the consolidated balance sheet through the date the consolidated financial statements were issued.

Supplementary Information (Unaudited)

12 Months Ended

Jun. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

Supplementary Information (Unaudited)

SUPPLEMENTARY INFORMATION (UNAUDITED)

The following sets forth certain unaudited consolidated quarterly statements of operations data for each of the Company’s last eight quarters. In management’s opinion, this quarterly information reflects all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation for the periods presented. Such quarterly results are not necessarily indicative of future results of operations and should be read in conjunction with the audited consolidated financial statements of the Company and the notes thereto.



2017 (In thousands, except per share data)	1ST QUARTER			2ND QUARTER		3RD QUARTER		4TH QUARTER
Net revenues	$	87,649		$	98,014	$	107,317	$	115,608
Gross margin	$	39,444		$	47,389	$	50,783	$	53,927
Income from operations	$	3,742		$	8,958	$	11,695	$	13,008
Income from continuing operations before income taxes	$	2,560		$	6,983	$	10,218	$	11,307
Income tax (benefit) provision	$	(1,259	)	$	1,779	$	3,170	$	2,503
Income from continuing operations	$	3,819		$	5,204	$	7,048	$	8,804
Net income	$	3,819		$	5,204	$	7,048	$	8,804
Net income per share:
Basic net income per share:	$	0.10		$	0.13	$	0.16	$	0.19
Diluted net income per share:	$	0.10		$	0.13	$	0.16	$	0.19
2016 (In thousands, except per share data)	1ST QUARTER			2ND QUARTER		3RD QUARTER		4TH QUARTER
Net revenues	$	58,409		$	60,417	$	65,898	$	85,430
Gross margin (1)	$	28,302		$	29,739	$	31,402	$	38,176
Income from operations	$	3,131		$	6,369	$	6,819	$	7,654
Income from continuing operations before income taxes	$	3,224		$	6,473	$	6,999	$	8,590
Income tax provision (2)	$	368		$	1,433	$	2,642	$	1,101
Income from continuing operations	$	2,856		$	5,040	$	4,357	$	7,489
Net income	$	2,856		$	5,040	$	4,357	$	7,489
Net income per share:
Basic net income per share	$	0.09		$	0.15	$	0.13	$	0.20
Diluted net income per share	$	0.08		$	0.15	$	0.13	$	0.19

(1) During 2017, the Company included costs related to the sustainment of its product portfolio as research and development expense, which was previously included as costs of revenues on the Consolidated Statements of Operations and Comprehensive Income. For comparative purposes, for the fiscal year ended June 30, 2016, the Company has reclassified $2,845, from costs of revenues to research and development expense. The quarterly amounts reclassified were $773, $1,161 and $911 for the 1^st quarter, 2^nd quarter and 3^rd quarter, respectively.

(2) Upon adoption of FASB ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, the Company recognized $1,100 of excess tax benefits in the fourth quarter as a benefit to income taxes in its consolidated statements of operations and comprehensive income (loss) for the year ended June 30, 2016. The tax benefit (provision) impacts were restated above to show the effect of this adoption as if it had occurred at the beginning of fiscal 2016. The tax benefit (provision) impacts were $896, $247, $(169), and $126 for the 1^st quarter, 2^nd quarter, 3^rd quarter and 4^th quarter, respectively. Income from continuing operations, net income, and net income amounts per share were also updated as a result of the adjustment to the income tax provision.

Due to the effects of rounding, the sum of the four quarters does not equal the annual total.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Principles Of Consolidation

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.

Business Combinations

BUSINESS COMBINATIONS


•	estimated step-ups for the fixed assets and inventory;


•	estimated fair values of intangible assets; and


•	estimated income tax assets and liabilities assumed from the acquiree.

Use Of Estimates

USE OF ESTIMATES

Revenue Recognition

REVENUE RECOGNITION

Cash And Cash Equivalents

CASH AND CASH EQUIVALENTS

Fair Value Measurement, Policy [Policy Text Block]

FAIR VALUE OF FINANCIAL INSTRUMENTS

Level 1—Quoted prices for identical instruments in active markets;

Level 3—Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.

Concentration Of Credit Risk

CONCENTRATION OF CREDIT RISK

Inventory

INVENTORY

Goodwill And Acquired Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

Long-Lived Assets

LONG-LIVED ASSETS

Property And Equipment

As assets are retired or sold, the related cost and accumulated depreciation are removed from the accounts and any resulting gain or loss is included in the results of operations.

Deferred Revenues And Customer Advances

DEFERRED REVENUES AND CUSTOMER ADVANCES

Income Taxes

INCOME TAXES

Product Warranty Accrual

PRODUCT WARRANTY ACCRUAL

Research And Development Costs

RESEARCH AND DEVELOPMENT COSTS

Research and development costs are expensed as incurred. Research and development costs are primarily made up of labor charges and prototype material and development expenses.

Stock-Based Compensation

STOCK-BASED COMPENSATION

Segment Reporting, Policy [Policy Text Block]

SEGMENT INFORMATION

Retirement of Common Stock

RETIREMENT OF COMMON STOCK

Net Earnings Per Share

NET EARNINGS PER SHARE

Accumulated Other Comprehensive Income

ACCUMULATED OTHER COMPREHENSIVE INCOME

Foreign Currency

FOREIGN CURRENCY

Recently Issued Accounting Pronouncements

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS

Employee Benefit Plans

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Schedule of Product Warranty Liability

The following table presents the changes in the Company's product warranty accrual.



	Fiscal 2017			Fiscal 2016			Fiscal 2015
Beginning balance at July 1,	$	1,523		$	1,974		$	2,078
Warranty assumed from CES	176			—			—
Warranty assumed from Delta	30			—			—
Warranty assumed from Carve-Out Business	—			114			—
Accruals for warranties issued during the period	1,328			1,976			1,465
Settlements made during the period	(1,366		)	(2,541		)	(1,569		)
Ending balance at June 30,	$	1,691		$	1,523		$	1,974

Basic and Diluted Weighted Average Shares Outstanding

Basic and diluted weighted average shares outstanding were as follows:



	Years Ended June 30,
	2017	2016	2015
Basic weighted-average shares outstanding	41,986	34,241	32,114
Effect of dilutive equity instruments	1,032	856	825
Diluted weighted-average shares outstanding	43,018	35,097	32,939

Acquisitions (Tables)

12 Months Ended

Jun. 30, 2017

Business Combinations [Abstract]

Schedule of Assets Acquired and Liabilities Assumed

The following table presents the net purchase price and the preliminary fair values of the assets and liabilities of Delta:



	Amounts
Consideration transferred
Cash paid at closing	$	40,500
Net purchase price	$	40,500

Estimated fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings	$	957
Inventory	4,452
Fixed assets	1,918
Other current and non-current assets	67
Current liabilities	(1,854		)
Estimated fair value of net tangible assets acquired	5,540
Estimated fair value of identifiable intangible assets	17,000
Estimated goodwill	17,960
Estimated fair value of net assets acquired	40,500
Net purchase price	$	40,500

The following table presents the net purchase price and the preliminary fair values of the assets and liabilities of CES:



	Amounts
Consideration transferred
Cash paid at closing	$	39,123
Working capital adjustment	(330		)
Net purchase price	$	38,793

Estimated fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings	$	2,698
Inventory	8,950
Fixed assets	1,480
Other current and non-current assets	748
Current liabilities	(3,154		)
Non-current liabilities	(6,140		)
Deferred tax liabilities	(857		)
Estimated fair value of net tangible assets acquired	3,725
Estimated fair value of identifiable intangible assets	14,722
Estimated goodwill	20,346
Estimated fair value of net assets acquired	38,793
Net purchase price	$	38,793

The following table presents the net purchase price and the fair values of the assets and liabilities of the Carve-Out Business:



	Amounts
Consideration transferred
Cash paid at closing	$	300,000
Value allocated to replacement awards	407
Working capital adjustment	(1,838		)
Net purchase price	$	298,569

Fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings	$	17,157
Inventory	25,477
Fixed assets	13,996
Other current and non-current assets	524
Current liabilities	(4,692		)
Non-current deferred tax liabilities	(25,449		)
Fair value of net tangible assets acquired	27,013
Fair value of identifiable intangible assets	102,800
Goodwill	168,756
Fair value of assets acquired	298,569
Net purchase price	$	298,569

Fair Value of Financial Instruments (Tables)

12 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Summary of Financial Assets Measured at Fair Value on Recurring Basis

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis at June 30, 2016:



	Fair Value Measurements
	June 30, 2016		Level 1		Level 2		Level 3
Assets:
Certificates of deposit	$	30,075	$	—	$	30,075	$	—
Total	$	30,075	$	—	$	30,075	$	—

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis at June 30, 2017:



	Fair Value Measurements
	June 30, 2017		Level 1		Level 2		Level 3
Assets:
Certificates of deposit	$	1,043	$	—	$	1,043	$	—
Total	$	1,043	$	—	$	1,043	$	—

Inventory (Tables)

12 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventory

Inventory was comprised of the following:



	June 30,
	2017		2016
Raw materials	$	48,645	$	31,205
Work in process	22,567		15,967
Finished goods	9,859		11,112
Total	$	81,071	$	58,284

Property and Equipment (Tables)

12 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment consisted of the following:



	Estimated Useful Lives (Years)	June 30,
	Estimated Useful Lives (Years)	2017			2016
Computer equipment and software	3-4	$	64,374		$	62,409
Furniture and fixtures	5	4,810			8,547
Leasehold improvements	lesser of estimated useful life or lease term	19,092			8,515
Machinery and equipment	5-10	42,193			29,078
		130,469			108,549
Less: accumulated depreciation		(78,826		)	(80,212		)
		$	51,643		$	28,337

Unamortized Deferred Gain

The unamortized deferred gain of $929 at June 30, 2016 was included in accrued expenses and in the accompanying consolidated balance sheets and has been fully amortized as of June 30, 2017

Goodwill (Tables)

12 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill



	MCE		MDS		Carve-Out Business		Total
Balance at June 30, 2015	$	134,378	$	33,768	$	—	$	168,146
Goodwill arising from the LIT acquisition	—		5,638		—		5,638
Goodwill arising from the Carve-Out Business Acquisition	—		—		170,243		170,243
Balance at June 30, 2016	$	134,378	$	39,406	$	170,243	$	344,027



	MCE		MDS		Carve-Out Business			Total
Balance at June 30, 2016	$	134,378	$	39,406	$	170,243		$	344,027
Goodwill adjustment for the Carve-Out Business acquisition	—		—		(1,487		)	(1,487		)
Goodwill arising from the CES acquisition	20,346		—		—			20,346
Goodwill arising from the Delta acquisition	17,960		—		—			17,960
Balance at May 31, 2017	$	172,684	$	39,406	$	168,756		$	380,846

Intangible Assets (Tables)

12 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets

Intangible assets consisted of the following:



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
June 30, 2017
Customer relationships	$	117,630	$	(31,533	)	$	86,097	10.0 years
Licensing agreements and patents	1,131		(277		)	854		3.7 years
Completed technologies	44,503		(6,079		)	38,424		7.9 years
Backlog	5,430		(1,768		)	3,662		2.0 years
	$	168,694	$	(39,657	)	$	129,037
June 30, 2016
Customer relationships	$	105,370	$	(23,824	)	$	81,546	9.9 years
Licensing agreements and patents	756		(38		)	718		4.0 years
Completed technologies	35,840		(3,545		)	32,295		7.6 years
Backlog	2,330		(216		)	2,114		2.0 years
	$	144,296	$	(27,623	)	$	116,673

Estimated Future Amortization Expense for Acquired Intangible Assets

Estimated future amortization expense for intangible assets remaining at June 30, 2017 is as follows:



	Year Ending June 30,
2018	$	21,722
2019	17,542
2020	14,767
2021	14,165
2022	14,165
Thereafter	46,676
Total future amortization expense	$	129,037

Schedule of Acquired Finite-Lived Intangible Assets by Major Class



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	8,000	$	(225	)	$	7,775	9.1 years
Completed technologies	5,900		(148		)	5,752		10.0 years
Backlog	3,100		(388		)	2,712		2.0 years
	$	17,000	$	(761	)	$	16,239



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	9,060	$	(681	)	$	8,379	9.0 years
Completed technologies	5,662		(547		)	5,115		7.0 years
	$	14,722	$	(1,228	)	$	13,494



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	70,900	$	(7,856	)	$	63,044	11.5 years
Completed technologies	29,700		(4,690		)	25,010		7.8 years
Backlog	2,200		(1,283		)	917		2.0 years
	$	102,800	$	(13,829	)	$	88,971

Restructuring Plan (Tables)

12 Months Ended

Jun. 30, 2017

Restructuring and Related Activities [Abstract]

Expenses by Business Segment for Restructuring Plans

The following table presents the detail of expenses for the Company’s restructuring plans:



	Severance & Related			Facilities & Other			Total
Restructuring liability at June 30, 2015	$	657		$	1,335		$	1,992
Restructuring charges	752			589			1,341
Cash paid	(1,118		)	(1,188		)	(2,306		)
Reversals (*)	(101		)	—			(101		)
Restructuring liability at June 30, 2016	190			736			926
Restructuring charges	1,706			253			1,959
Cash paid	(524		)	(989		)	(1,513		)
Reversals (*)	(7		)	—			(7		)
Restructuring liability at June 30, 2017	$	1,365		$	—		$	1,365

(*) Reversals result from the unused outplacement services and operating costs.

Income Taxes (Tables)

12 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Components of Income Before Income Taxes and Income Tax Expense (Benefit)

The components of income from continuing operations before income taxes and income tax expense were as follows:



	Year Ended June 30,
	2017			2016			2015
Income from continuing operations before income taxes:
United States	$	30,499		$	25,194		$	18,443
Foreign	569			92			352
	$	31,068		$	25,286		$	18,795
Tax provision (benefit):
Federal:
Current	$	11,476		$	6,707		$	4,267
Deferred	(7,645		)	(2,627		)	(458		)
	$	3,831		$	4,080		$	3,809
State:
Current	$	3,650		$	1,839		$	1,372
Deferred	(1,684		)	(424		)	(921		)
	$	1,966		$	1,415		$	451
Foreign:
Current	$	240		$	59		$	58
Deferred	156			(10		)	48
	396			49			106
	$	6,193		$	5,544		$	4,366

Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax Rate from Continuing Operations

The following is the reconciliation between the statutory federal income tax rate and the Company’s effective income tax rate for continuing operations:



	Year Ended June 30,
	2017		2016		2015
Tax provision at federal statutory rates	35.0	%	35.0	%	35.0	%
State income tax, net of federal tax benefit	4.9		5.0		4.9
Research and development credits	(6.1	)	(8.4	)	(4.8	)
Excess tax benefits on stock compensation	(13.1	)	(4.4	)	—
Domestic manufacturing deduction	(3.9	)	(3.5	)	(3.2	)
Income from legal settlement excluded from taxable income	—		(2.8	)	—
Deemed repatriation of foreign earnings	(0.1	)	(0.2	)	(0.4	)
Foreign income tax rate differential	0.2		—		—
Equity compensation	0.6		0.3		(0.1	)
Officers' compensation	1.2		2.3		2.8
Deferred tax asset and liability adjustments	—		—		(4.2	)
Change in state tax rates	—		—		(3.1	)
Acquisition costs	0.9		—		—
Reserves for tax contingencies	(0.6	)	(3.2	)	(5.0	)
Other	0.9		1.8		1.3
	19.9	%	21.9	%	23.2	%

Components of Net Deferred Tax Assets (Liabilities)



	June 30,
	2017			2016
Deferred tax assets:
Inventory valuation and receivable allowances	$	13,845		$	12,768
Accrued compensation	4,555			3,267
Equity compensation	4,858			3,201
Federal and state research and development tax credit carryforwards	13,415			15,870
Gain on sale-leaseback	—			371
Other accruals	2,125			1,570
Deferred compensation	1,606			—
Capital loss carryforwards	3,562			3,562
Other temporary differences	1,500			4,011
	45,466			44,620
Valuation allowance	(16,570		)	(18,472		)
Total deferred tax assets	28,896			26,148
Deferred tax liabilities:
Prepaid expenses	(481		)	(773		)
Property and equipment	(3,749		)	(2,451		)
Intangible assets	(28,163		)	(33,826		)
Tax method of accounting change	(285		)	(570		)
Other temporary differences	(441		)	(370		)
Total deferred tax liabilities	(33,119		)	(37,990		)
Net deferred tax (liabilities) assets	$	(4,223	)	$	(11,842	)

As reported:
Deferred tax assets	$	633		$	—
Deferred tax liabilities	(4,856		)	(11,842		)
	$	(4,223	)	$	(11,842	)

Summary of Reserves for Unrecognized Income Tax Benefits

The changes in the Company’s reserves for unrecognized income tax benefits are summarized as follows:



	Year Ended June 30,
	2017			2016
Unrecognized tax benefits, beginning of period	$	1,566		$	2,190
Increases for previously recognized positions	46			79
Settlements of previously recognized positions	(793		)	—
Reductions as a result of a lapse of the applicable statute of limitations	(273		)	—
Increases for currently recognized positions	384			302
Reductions for previously recognized positions deemed effectively settled	—			(681		)
Reductions for previously recognized positions	(126		)	(324		)
Unrecognized tax benefits, end of period	$	804		$	1,566

Commitments and Contingencies (Tables)

12 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Minimum Lease Payments under Non Cancelable Operating Leases

Minimum lease payments under the Company’s non-cancelable operating leases are as follows:



	Year Ending June 30,
2018	$	6,139
2019	5,595
2020	5,208
2021	4,291
2022	3,387
Thereafter	18,897
Total minimum lease payments	$	43,517

Employee Benefit Plans (Tables)

12 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Expected Benefit Payments

The following table reflects the total pension benefits expected to be paid from the Plan, which is funded from contributions by participants and the Company.



	Year Ended June 30,
2018	$	526
2019	678
2020	800
2021	497
2022	622
Thereafter (next 5 years)	3,928
Total	$	7,051

Schedule of Net Benefit Costs

The following table outlines the components of net periodic benefit cost of the Plan for the year ended June 30, 2017:



	Year Ended June 30, 2017
Service cost	$	557
Interest cost	73
Expected return on assets	(105		)
Amortization of prior service cost	20
Net periodic benefit cost	$	545

Schedule of Assumptions Used

The following table reflects the related actuarial assumptions used to determine net periodic benefit cost of the Plan for the year ended June 30, 2017:



	Year Ended June 30, 2017
Discount rate	0.70	%
Expected rate of return on Plan assets	1.50	%
Expected inflation	1.00	%
Rate of compensation increases	1.00	%

Schedule of Changes in Projected Benefit Obligations

The following table presents the change in projected benefit obligation for the period presented:



	Year Ending June 30, 2017
Projected benefit obligation at November 4, 2016	$	17,086
Service cost	557
Interest cost	73
Employee contributions	581
Actuarial gain	(598		)
Benefits paid	(563		)
Plan amendment	390
Projected benefit obligation at end of year	$	17,526

Schedule of Changes in Fair Value of Plan Assets

The following table presents the change in Plan assets for the period presented:



	Year Ending June 30, 2017
Fair value of plan assets at November 4, 2016	$	10,459
Actual return on Plan assets	100
Company contributions	348
Employee contributions	581
Benefits paid	(563		)
Fair value of plan assets at end of year	$	10,925

Schedule of Net Funded Status

The following table presents the Company's reconciliation of funded status for the period presented:



	Year Ended June 30, 2017
Projected benefit obligation at end of year	$	17,526
Fair value of plan assets at end of year	10,925
Funded status	$	(6,601	)

Stock-Based Compensation (Tables)

12 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock Option Plans

The following table summarizes activity of the Company’s stock option plans since June 30, 2015:



	Options Outstanding
	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value as of 6/30/2017
Outstanding at June 30, 2015	830		$	13.43	1.66
Granted	—		—
Exercised	(524	)	13.12
Cancelled	(48	)	17.25
Outstanding at June 30, 2016	258		$	13.34	1.06
Granted	—		—
Exercised	(207	)	13.29
Cancelled	—		—
Outstanding at June 30, 2017	51		$	13.53	0.60	$	1,442
Vested and expected to vest at June 30, 2017	51		$	13.53	0.60	$	1,442
Exercisable at June 30, 2017	51		$	13.53	0.60	$	1,442

Summary of Nonvested Restricted Stock

The following table summarizes the status of the Company’s non-vested restricted stock awards since June 30, 2015:



	Non-Vested Restricted Stock Awards
	Number of Shares		Weighted Average Grant Date Fair Value
Outstanding at June 30, 2015	1,866		$	10.72
Granted	667		16.26
Vested	(743	)	10.93
Forfeited	(124	)	11.70
Outstanding at June 30, 2016	1,666		$	13.09
Granted	718		24.72
Vested	(769	)	11.94
Forfeited	(51	)	15.02
Outstanding at June 30, 2017	1,564		$	18.93

Stock Based Compensation Expenses

The following table presents share-based compensation expenses from continuing operations included in the Company’s consolidated statement of operations:



	Year Ended June 30,
	2017			2016			2015
Cost of revenues	$	531		$	441		$	493
Selling, general and administrative	13,212			7,864			6,751
Research and development	1,598			1,269			1,396
Share-based compensation expense before tax	15,341			9,574			8,640
Income taxes	(5,874		)	(3,727		)	(3,332		)
Share-based compensation expense, net of income taxes	$	9,467		$	5,847		$	5,308

Operating Segment, Geographic Information and Significant Customers (Tables)

12 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Geographic Distribution of Revenues and Long Lived Assets from Continuing Operations



	US		Europe		Asia Pacific		Eliminations			Total
YEAR ENDED JUNE 30, 2017
Net revenues to unaffiliated customers	$	380,538	$	22,242	$	5,808	$	—		$	408,588
Inter-geographic revenues	7,637		44		—		(7,681		)	—
Net revenues	$	388,175	$	22,286	$	5,808	$	(7,681	)	$	408,588
Identifiable long-lived assets (1)	$	50,340	$	1,288	$	15	$	—		$	51,643
YEAR ENDED JUNE 30, 2016
Net revenues to unaffiliated customers	$	259,781	$	5,464	$	4,909	$	—		$	270,154
Inter-geographic revenues	7,911		447		—		(8,358		)	—
Net revenues	$	267,692	$	5,911	$	4,909	$	(8,358	)	$	270,154
Identifiable long-lived assets (1)	$	28,187	$	127	$	23	$	—		$	28,337
YEAR ENDED JUNE 30, 2015
Net revenues to unaffiliated customers	$	229,849	$	2,076	$	2,922	$	—		$	234,847
Inter-geographic revenues	2,806		475		—		(3,281		)	—
Net revenues	$	232,655	$	2,551	$	2,922	$	(3,281	)	$	234,847
Identifiable long-lived assets (1)	$	13,127	$	68	$	31	$	—		$	13,226

(1) Identifiable long-lived assets exclude goodwill and intangible assets.

Revenue from External Customers by Geographic Areas

The following table presents the Company's net revenue by end market for the periods presented:



	Year Ended June 30,
	2017		2016		2015
Domestic (1)	$	341,699	$	220,253	$	189,596
International/Foreign Military Sales (2)	66,889		49,901		45,251
Total Net Revenue	$	408,588	$	270,154	$	234,847

(1) Domestic revenues consist of sales where the end user is within the U.S., as well as sales to prime defense contractor customers where the ultimate end user location is not defined.

Revenue from External Customers by Products and Services

The following table presents the Company's net revenue by end application for the periods presented:



	Year Ended June 30,
	2017		2016		2015
Radar (1)	$	150,441	$	140,289	$	143,475
Electronic Warfare (2)	106,446		72,118		51,419
Other (3)	151,701		57,747		39,953
Total Net Revenue	$	408,588	$	270,154	$	234,847

(1) Radar includes end-use applications where radio frequency signals are utilized to detect, track, and identify objects.

(2) Electronic Warfare includes end-use applications comprising the offensive and defensive use of the electromagnetic spectrum.

The following table below the Company's net revenue by product grouping for the periods presented:



	Year Ended June 30,
	2017		2016		2015
Components (1)	$	105,669	$	31,252	$	15,543
Modules and Sub-assemblies (2)	161,973		126,777		107,922
Integrated Subsystems (3)	140,946		112,125		111,382
Total Net Revenue	$	408,588	$	270,154	$	234,847

Customers Comprising Ten Percent or more Revenues

Customers comprising 10% or more of the Company’s revenues for the periods shown below are as follows:



	Year Ended June 30,
	2017		2016		2015
Lockheed Martin Corporation	20	%	23	%	20	%
Raytheon Company	16		20		37
	36	%	43	%	57	%

Schedules of Concentration of Risk, by Risk Factor

Programs comprising 10% or more of the Company’s revenues for the periods shown below are as follows:



	Year Ended June 30,
	2017		2016		2015
SEWIP	*		12	%	*
Aegis	*		10	%	12	%
Patriot	*		*		18	%
F-35	*		*		16	%
	—	%	22	%	46	%

* Indicates that the amount is less than 10% of the Company's revenues for the respective period. No programs were in excess of 10% of the Company's revenues for fiscal 2017.

Discontinued Operations (Tables)

12 Months Ended

Jun. 30, 2017

Discontinued Operations and Disposal Groups [Abstract]

Schedule of discontinued operations

The amounts reported in loss from discontinued operations, net of income taxes were as follows:



	For the Year Ended June 30,
	2015
Net revenues of discontinued operations	$	3,493
Costs of discontinued operations:
Cost of revenues	2,385
Selling, general and administrative	1,958
Research and development	305
Amortization of intangible assets	279
Restructuring and other charges	—
Impairment of goodwill	2,283
Loss from discontinued operations before income taxes	(3,717		)
Loss on disposal of discontinued operations before income taxes	(892		)
Tax benefit	(549		)
Loss from discontinued operations, net of income taxes	$	(4,060	)

There were no balances for the assets and liabilities of the discontinued operations at June 30, 2017 and 2016.

The depreciation, amortization, capital expenditures and significant operating and investing non-cash items of the discontinued operations were as follows:



	For the Year Ended June 30, 2015
	For the Year Ended June 30, 2015
Depreciation	$	100
Amortization of intangible assets	$	279
Capital expenditures	$	—
Impairment of goodwill	$	2,283
Stock-based compensation expense	$	88

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721665-107760

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=64862545&loc=SL51724579-110230

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5C
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 4A
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721663-107760

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2941-110230

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5A
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5D
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760

+ Details

Supplementary Information (Unaudited) (Tables)

12 Months Ended

Jun. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

Consolidated Quarterly Statements of Operations



2017 (In thousands, except per share data)	1ST QUARTER			2ND QUARTER		3RD QUARTER		4TH QUARTER
Net revenues	$	87,649		$	98,014	$	107,317	$	115,608
Gross margin	$	39,444		$	47,389	$	50,783	$	53,927
Income from operations	$	3,742		$	8,958	$	11,695	$	13,008
Income from continuing operations before income taxes	$	2,560		$	6,983	$	10,218	$	11,307
Income tax (benefit) provision	$	(1,259	)	$	1,779	$	3,170	$	2,503
Income from continuing operations	$	3,819		$	5,204	$	7,048	$	8,804
Net income	$	3,819		$	5,204	$	7,048	$	8,804
Net income per share:
Basic net income per share:	$	0.10		$	0.13	$	0.16	$	0.19
Diluted net income per share:	$	0.10		$	0.13	$	0.16	$	0.19
2016 (In thousands, except per share data)	1ST QUARTER			2ND QUARTER		3RD QUARTER		4TH QUARTER
Net revenues	$	58,409		$	60,417	$	65,898	$	85,430
Gross margin (1)	$	28,302		$	29,739	$	31,402	$	38,176
Income from operations	$	3,131		$	6,369	$	6,819	$	7,654
Income from continuing operations before income taxes	$	3,224		$	6,473	$	6,999	$	8,590
Income tax provision (2)	$	368		$	1,433	$	2,642	$	1,101
Income from continuing operations	$	2,856		$	5,040	$	4,357	$	7,489
Net income	$	2,856		$	5,040	$	4,357	$	7,489
Net income per share:
Basic net income per share	$	0.09		$	0.15	$	0.13	$	0.20
Diluted net income per share	$	0.08		$	0.15	$	0.13	$	0.19

Due to the effects of rounding, the sum of the four quarters does not equal the annual total.

Description of Business (Details) $ in Thousands					12 Months Ended
Description of Business (Details) $ in Thousands	Apr. 03, 2017 USD ($)	Nov. 04, 2016 USD ($)	Nov. 03, 2016 USD ($)	May 02, 2016 USD ($)	Jun. 30, 2017 program contractor
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of programs using products and services, more than 300 \| program					300
Number of contractors using products and services, more than 25 \| contractor					25
Delta
Total purchase price	$ 40,500
Cash paid at closing	$ 40,500
CES Creative Electronic Systems S.A.
Total purchase price		$ 38,793	$ 39,123
Cash paid at closing		$ 39,123
Carve-Out Business
Total purchase price				$ 298,569
Cash paid at closing				$ 300,000

Summary of Significant Accounting Policies - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues				$ 217,045	$ 142,535	$ 120,647
As Adjusted
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues	$ (1)	$ (1)	$ (1)		$ (2,845)	$ (3,981)

Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details)	12 Months Ended
	Jun. 30, 2017
Maximum
Restricted Cash and Cash Equivalents Items [Line Items]
Maturity of cash and cash equivalents	90 days

Summary of Significant Accounting Policies - Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Accounting Policies [Abstract]
Restricted cash	$ 0	$ 264

Summary of Significant Accounting Policies - Concentration of Risk (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2017 USD ($) customer	Jun. 30, 2016 USD ($) customer
Concentration Risk [Line Items]
Cash and cash equivalent \| $	$ 41,637	$ 81,691
Customer Concentration Risk \| Accounts Receivable, Unbilled Receivables, and Costs in Excess of Billings [Member]
Concentration Risk [Line Items]
Concentration risk, number \| customer	5	5
Concentration risk, percent	53.00%	50.00%

- Definition

Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

+ References + Details

Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Segment Information (Details)	12 Months Ended
	Jun. 30, 2017 segment
Accounting Policies [Abstract]
Number of reportable segments	1

Summary of Significant Accounting Policies - Intangible Assets (Detail)	12 Months Ended
	Jun. 30, 2017
Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, estimated useful lives	12 years

Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Accounting Policies [Abstract]
Property and equipment, estimated useful lives	3 years
Capitalized software development cost	$ 508	$ 0	$ 0

Summary of Significant Accounting Policies - Income Taxes (Details)	Jun. 30, 2017
Accounting Policies [Abstract]
Minimum likelihood of tax benefits being recognized upon ultimate settlement	50.00%

Summary of Significant Accounting Policies - Changes in Product Warranty Accrual (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Product Warranty Liability [Line Items]
Product warranty term	12 months
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning Balance	$ 1,523	$ 1,974	$ 2,078
Accruals for warranties issued during the period	1,328	1,976	1,465
Settlements made during the period	(1,366)	(2,541)	(1,569)
Ending Balance	1,691	1,523	1,974
CES Creative Electronic Systems S.A.
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty assumed from CES	176	0	0
Delta
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty assumed from CES	30	0	0
Carve-Out Business
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty assumed from CES	$ 0	$ 114	$ 0

Summary of Significant Accounting Policies - Basic and Diluted Weighted Average Shares Outstanding (Detail) - shares shares in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Accounting Policies [Abstract]
Basic weighted-average shares outstanding	41,986	34,241	32,114
Effect of dilutive equity instruments	1,032	856	825
Diluted weighted-average shares outstanding	43,018	35,097	32,939

Summary of Significant Accounting Policies - Net Earnings Per Share Additional Information (Details) - shares shares in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Accounting Policies [Abstract]
Common stock excluded from diluted earning per share (in shares)	16	7	453

Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income (Details) - USD ($)	Jun. 30, 2017	Jun. 30, 2016
Accounting Policies [Abstract]
Accumulated other comprehensive income adjustment for foreign currency	$ (93,000)	$ 171,000
Accumulated other comprehensive income adjustment for pension plans	220,000
Accumulated other comprehensive income, available-for-sale securities gains (losses)	$ 0	$ 0

Acquisitions (Details) - USD ($) $ in Thousands							3 Months Ended	12 Months Ended
Acquisitions (Details) - USD ($) $ in Thousands	Apr. 03, 2017	Jan. 26, 2017	Nov. 04, 2016	May 02, 2016	Apr. 13, 2016	Apr. 04, 2016	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	May 31, 2017	Jun. 30, 2015
Business Acquisition [Line Items]
Goodwill							$ 380,846	$ 380,846	$ 344,027	$ 380,846	$ 168,146
Net proceeds from underwritten common stock public offering		$ 215,725				$ 92,788
Term Loan
Business Acquisition [Line Items]
Long-term debt, gross				$ 200,000
Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets, estimated useful lives								10 years	9 years 10 months 18 days
Delta
Business Acquisition [Line Items]
Cash paid at closing	$ 40,500
Goodwill	17,960
Acquired intangible assets, estimated useful lives							15 years
Goodwill deductible for tax purposes							$ 18,029	$ 18,029
Revenue								5,435
Net income (loss)								$ 805
Delta \| Customer Relationships
Business Acquisition [Line Items]
Preliminary identifiable intangible assets	$ 8,000
Intangible asset useful life	9 years
Acquired intangible assets, estimated useful lives								9 years 1 month 21 days
Delta \| Developed Technology
Business Acquisition [Line Items]
Preliminary identifiable intangible assets	$ 5,900
Intangible asset useful life	7 years
Delta \| Backlog
Business Acquisition [Line Items]
Preliminary identifiable intangible assets	$ 3,100
Intangible asset useful life	2 years
CES Creative Electronic Systems S.A.
Business Acquisition [Line Items]
Cash paid at closing			$ 39,123
Goodwill			20,346
Revenue								$ 17,008
Net income (loss)								$ 1,196
CES Creative Electronic Systems S.A. \| Customer Relationships
Business Acquisition [Line Items]
Preliminary identifiable intangible assets			$ 9,060
Intangible asset useful life			9 years
Acquired intangible assets, estimated useful lives								9 years
CES Creative Electronic Systems S.A. \| Developed Technology
Business Acquisition [Line Items]
Preliminary identifiable intangible assets			$ 5,662
Intangible asset useful life			7 years
Carve-Out Business
Business Acquisition [Line Items]
Cash paid at closing				300,000
Goodwill				168,756
Goodwill deductible for tax purposes							$ 26,494	$ 26,494
Carve-Out Business \| Term Loan
Business Acquisition [Line Items]
Long-term debt, gross				200,000
Carve-Out Business \| Over-Allotment Option
Business Acquisition [Line Items]
Net proceeds from underwritten common stock public offering					$ 92,788
Carve-Out Business \| Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets, estimated useful lives								11 years 6 months
Identifiable intangible assets acquired				70,900
Carve-Out Business \| Developed Technology
Business Acquisition [Line Items]
Identifiable intangible assets acquired				29,700
Carve-Out Business \| Backlog
Business Acquisition [Line Items]
Identifiable intangible assets acquired				$ 2,200

Acquisitions - Schedule of Business Acquisitions (Details) - USD ($) $ in Thousands	Apr. 03, 2017	Nov. 04, 2016	Nov. 03, 2016	May 02, 2016	Jun. 30, 2017	May 31, 2017	Jun. 30, 2016	Jun. 30, 2015
Fair value of tangible assets acquired and liabilities assumed
Goodwill					$ 380,846	$ 380,846	$ 344,027	$ 168,146
Delta
Consideration transferred
Cash paid at closing	$ 40,500
Net purchase price	40,500
Fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings	957
Inventory	4,452
Fixed assets	1,918
Other current and non-current assets	67
Current liabilities	(1,854)
Estimated fair value of net tangible assets acquired	5,540
Fair value of identifiable intangible assets	17,000
Goodwill	17,960
Fair value of assets acquired	$ 40,500
CES Creative Electronic Systems S.A.
Consideration transferred
Cash paid at closing		$ 39,123
Working capital adjustment		(330)
Net purchase price		38,793	$ 39,123
Fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings		2,698
Inventory		8,950
Fixed assets		1,480
Other current and non-current assets		748
Current liabilities		(3,154)
Non-current liabilities		(6,140)
Non-current deferred tax liabilities		(857)
Estimated fair value of net tangible assets acquired		3,725
Fair value of identifiable intangible assets		14,722
Goodwill		20,346
Fair value of assets acquired		$ 38,793
Carve-Out Business
Consideration transferred
Cash paid at closing				$ 300,000
Value allocated to replacement awards				407
Working capital adjustment				(1,838)
Net purchase price				298,569
Fair value of tangible assets acquired and liabilities assumed
Accounts receivable and cost in excess of billings				17,157
Inventory				25,477
Fixed assets				13,996
Other current and non-current assets				524
Current liabilities				(4,692)
Non-current deferred tax liabilities				(25,449)
Estimated fair value of net tangible assets acquired				27,013
Fair value of identifiable intangible assets				102,800
Goodwill				168,756
Fair value of assets acquired				$ 298,569

Fair Value of Financial Instruments - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Fair Value
Assets:
Fair value measurement disclosure	$ 1,043	$ 30,075
Certificates of Deposit [Member] \| Fair Value
Assets:
Fair value measurement disclosure	1,043	30,075
Level 1
Assets:
Fair value measurement disclosure	0	0
Level 1 \| Certificates of Deposit [Member]
Assets:
Fair value measurement disclosure	0	0
Level 2
Assets:
Fair value measurement disclosure	1,043	30,075
Level 2 \| Certificates of Deposit [Member]
Assets:
Fair value measurement disclosure	1,043	30,075
Level 3
Assets:
Fair value measurement disclosure	0	0
Level 3 \| Certificates of Deposit [Member]
Assets:
Fair value measurement disclosure	$ 0	$ 0

Inventory (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 48,645	$ 31,205
Work in process	22,567	15,967
Finished goods	9,859	11,112
Total	$ 81,071	$ 58,284

Inventory - Additional Information (Details)	12 Months Ended
Inventory - Additional Information (Details)	Jun. 30, 2017 USD ($)
Inventory Disclosure [Abstract]
Increase in inventory primarily due to inclusion of inventory from acquisition	$ 22,787,000
Inventory for long-term contracts or programs	$ 0

Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Property and equipment, gross	$ 130,469	$ 108,549
Less: accumulated depreciation and amortization	(78,826)	(80,212)
Property and equipment, net	51,643	28,337
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 64,374	62,409
Computer equipment and software \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Computer equipment and software \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	4 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Property and equipment, gross	$ 4,810	8,547
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	lesser of estimated useful life or lease term
Property and equipment, gross	$ 19,092	8,515
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 42,193	$ 29,078
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	10 years

Property and Equipment - Additional Information (Detail) $ in Thousands		12 Months Ended
	Apr. 20, 2007 USD ($) OptionPlan	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Property, Plant and Equipment [Line Items]
Increase in property and equipment		$ 23,306
Depreciation and amortization expense related to property and equipment		12,589	$ 6,900	$ 6,332
Lease term	10 years
Number of five year term option to renew \| OptionPlan	2
Lease term, option to renew	5 years
Deferred gain on sale-leaseback transaction	$ 11,569
Unamortized deferred gain			929
Computer equipment and software
Property, Plant and Equipment [Line Items]
Retirement of asset		$ 14,310	$ 32

Goodwill Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
	May 31, 2017	Jun. 30, 2016
Goodwill [Roll Forward]
Beginning Balance	$ 344,027	$ 168,146
Ending Balance	380,846	344,027
MCE
Goodwill [Roll Forward]
Beginning Balance	134,378	134,378
Ending Balance	172,684	134,378
MDS
Goodwill [Roll Forward]
Beginning Balance	39,406	33,768
Ending Balance	39,406	39,406
Carve-Out Business
Goodwill [Roll Forward]
Beginning Balance	170,243	0
Ending Balance	168,756	170,243
Lewis Innovative Technologies
Goodwill [Roll Forward]
Goodwill arising from acquisition		5,638
Lewis Innovative Technologies \| MCE
Goodwill [Roll Forward]
Goodwill arising from acquisition		0
Lewis Innovative Technologies \| MDS
Goodwill [Roll Forward]
Goodwill arising from acquisition		5,638
Carve-Out Business
Goodwill [Roll Forward]
Goodwill arising from acquisition		170,243
Goodwill adjustments	(1,487)
Carve-Out Business \| Carve-Out Business
Goodwill [Roll Forward]
Goodwill arising from acquisition		$ 170,243
Goodwill adjustments	(1,487)
CES Creative Electronic Systems S.A.
Goodwill [Roll Forward]
Goodwill arising from acquisition	20,346
CES Creative Electronic Systems S.A. \| MCE
Goodwill [Roll Forward]
Goodwill arising from acquisition	20,346
Delta
Goodwill [Roll Forward]
Goodwill arising from acquisition	17,960
Delta \| MCE
Goodwill [Roll Forward]
Goodwill arising from acquisition	$ 17,960

Goodwill - Additional Information (Detail)	1 Months Ended	12 Months Ended
Goodwill - Additional Information (Detail)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($) segment reporting_unit	May 31, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Goodwill [Line Items]
Number of reportable segments \| segment		1
Number of reporting units \| reporting_unit		3
Goodwill impairment	$ 0
Goodwill	380,846,000	$ 380,846,000	$ 380,846,000	$ 344,027,000	$ 168,146,000
SMP
Goodwill [Line Items]
Goodwill	116,003	116,003
AMS
Goodwill [Line Items]
Goodwill	217,956	217,956
MDS
Goodwill [Line Items]
Goodwill	$ 46,887	$ 46,887	$ 39,406,000	$ 39,406,000	$ 33,768,000

Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 168,694	$ 168,694	$ 144,296
Accumulated Amortization	(39,657)	(39,657)	(27,623)
Net Carrying Amount	129,037	129,037	116,673
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	117,630	117,630	105,370
Accumulated Amortization	(31,533)	(31,533)	(23,824)
Net Carrying Amount	86,097	$ 86,097	$ 81,546
Weighted Average Useful Life		10 years	9 years 10 months 18 days
Licensing agreements and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,131	$ 1,131	$ 756
Accumulated Amortization	(277)	(277)	(38)
Net Carrying Amount	854	$ 854	$ 718
Weighted Average Useful Life		3 years 8 months 12 days	4 years
Completed technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	44,503	$ 44,503	$ 35,840
Accumulated Amortization	(6,079)	(6,079)	(3,545)
Net Carrying Amount	38,424	$ 38,424	$ 32,295
Weighted Average Useful Life		7 years 10 months 24 days	7 years 7 months 18 days
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,430	$ 5,430	$ 2,330
Accumulated Amortization	(1,768)	(1,768)	(216)
Net Carrying Amount	3,662	$ 3,662	$ 2,114
Weighted Average Useful Life		2 years	2 years
Delta
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,000	$ 17,000
Accumulated Amortization	(761)	(761)
Net Carrying Amount	$ 16,239	16,239
Weighted Average Useful Life	15 years
Delta \| Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 8,000	8,000
Accumulated Amortization	(225)	(225)
Net Carrying Amount	7,775	$ 7,775
Weighted Average Useful Life		9 years 1 month 21 days
Delta \| Completed technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,900	$ 5,900
Accumulated Amortization	(148)	(148)
Net Carrying Amount	5,752	$ 5,752
Weighted Average Useful Life		10 years
Delta \| Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,100	$ 3,100
Accumulated Amortization	(388)	(388)
Net Carrying Amount	2,712	$ 2,712
Weighted Average Useful Life		2 years
CES Creative Electronic Systems S.A.
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,722	$ 14,722
Accumulated Amortization	(1,228)	(1,228)
Net Carrying Amount	13,494	13,494
CES Creative Electronic Systems S.A. \| Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,060	9,060
Accumulated Amortization	(681)	(681)
Net Carrying Amount	8,379	$ 8,379
Weighted Average Useful Life		9 years
CES Creative Electronic Systems S.A. \| Completed technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,662	$ 5,662
Accumulated Amortization	(547)	(547)
Net Carrying Amount	5,115	$ 5,115
Weighted Average Useful Life		7 years
Carve-Out Business
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	102,800	$ 102,800
Accumulated Amortization	(13,829)	(13,829)
Net Carrying Amount	88,971	88,971
Carve-Out Business \| Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	70,900	70,900
Accumulated Amortization	(7,856)	(7,856)
Net Carrying Amount	63,044	$ 63,044
Weighted Average Useful Life		11 years 6 months
Carve-Out Business \| Completed technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	29,700	$ 29,700
Accumulated Amortization	(4,690)	(4,690)
Net Carrying Amount	25,010	$ 25,010
Weighted Average Useful Life		7 years 10 months
Carve-Out Business \| Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,200	$ 2,200
Accumulated Amortization	(1,283)	(1,283)
Net Carrying Amount	$ 917	$ 917
Weighted Average Useful Life		2 years

Intangible Assets - Estimated Future Amortization Expense for Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Finite-Lived Intangible Assets, Gross	$ 168,694	$ 144,296
Finite-Lived Intangible Assets, Accumulated Amortization	39,657	27,623
2015	21,722
2016	17,542
2017	14,767
2018	14,165
2019	14,165
Thereafter	46,676
Net Carrying Amount	129,037	116,673
Carve-Out Business
Finite-Lived Intangible Assets, Gross	102,800
Finite-Lived Intangible Assets, Accumulated Amortization	13,829
Net Carrying Amount	88,971
Customer Relationships [Member]
Finite-Lived Intangible Assets, Gross	117,630	105,370
Finite-Lived Intangible Assets, Accumulated Amortization	31,533	23,824
Net Carrying Amount	$ 86,097	$ 81,546
Weighted Average Useful Life	10 years	9 years 10 months 18 days
Customer Relationships [Member] \| Carve-Out Business
Finite-Lived Intangible Assets, Gross	$ 70,900
Finite-Lived Intangible Assets, Accumulated Amortization	7,856
Net Carrying Amount	$ 63,044
Weighted Average Useful Life	11 years 6 months
Completed Technology [Member]
Finite-Lived Intangible Assets, Gross	$ 44,503	$ 35,840
Finite-Lived Intangible Assets, Accumulated Amortization	6,079	3,545
Net Carrying Amount	$ 38,424	$ 32,295
Weighted Average Useful Life	7 years 10 months 24 days	7 years 7 months 18 days
Completed Technology [Member] \| Carve-Out Business
Finite-Lived Intangible Assets, Gross	$ 29,700
Finite-Lived Intangible Assets, Accumulated Amortization	4,690
Net Carrying Amount	$ 25,010
Weighted Average Useful Life	7 years 10 months
Backlog [Member]
Finite-Lived Intangible Assets, Gross	$ 5,430	$ 2,330
Finite-Lived Intangible Assets, Accumulated Amortization	1,768	216
Net Carrying Amount	$ 3,662	$ 2,114
Weighted Average Useful Life	2 years	2 years
Backlog [Member] \| Carve-Out Business
Finite-Lived Intangible Assets, Gross	$ 2,200
Finite-Lived Intangible Assets, Accumulated Amortization	1,283
Net Carrying Amount	$ 917
Weighted Average Useful Life	2 years

Restructuring Plan - Additional Information (Detail)	12 Months Ended
Restructuring Plan - Additional Information (Detail)	Jun. 30, 2017 USD ($) position	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($) position
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 1,952,000	$ 1,240,000	$ 3,175,000
Number of positions eliminated \| position			16
Other Restructuring Costs	1,042
2014 Plan Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 910
Number of positions eliminated \| position	33

Restructuring Plan - Expenses by Business Segment for Restructuring Plans (Detail) - USD ($)
$ in Thousands

12 Months Ended

Jun. 30, 2017

Jun. 30, 2016

Restructuring Reserve [Roll Forward]

Restructuring liability at beginning of period

$ 926

$ 1,992

Provisions

1,959

1,341

Cash paid

(1,513)

(2,306)

Reversals

^[1]

(7)

(101)

Restructuring liability at end period

1,365

926

Severance

Restructuring Reserve [Roll Forward]

Restructuring liability at beginning of period

190

657

Provisions

1,706

752

Cash paid

(524)

(1,118)

Reversals

^[1]

(7)

(101)

Restructuring liability at end period

1,365

190

Other Members

Restructuring Reserve [Roll Forward]

Restructuring liability at beginning of period

736

1,335

Provisions

253

589

Cash paid

(989)

(1,188)

Reversals

^[1]

Restructuring liability at end period

$ 0

$ 736

[1]	Reversals result from the unused outplacement services and operating costs.

Income Taxes - Components of Income Before Income Taxes and Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income from continuing operations before income taxes:
United States									$ 30,499	$ 25,194	$ 18,443
Foreign									569	92	352
Income from continuing operations before income taxes	$ 11,307	$ 10,218	$ 6,983	$ 2,560	$ 8,590	$ 6,999	$ 6,473	$ 3,224	31,068	25,286	18,795
Federal:
Current									11,476	6,707	4,267
Deferred									(7,645)	(2,627)	(458)
Federal Income Tax Expense (Benefit), Continuing Operations, Total									3,831	4,080	3,809
State:
Current									3,650	1,839	1,372
Deferred									(1,684)	(424)	(921)
State and Local Income Tax Expense (Benefit), Continuing Operations, Total									1,966	1,415	451
Foreign:
Current									240	59	58
Deferred									156	(10)	48
Foreign, Income Tax expense benefit									396	49	106
Income tax expense (benefit)	$ 2,503	$ 3,170	$ 1,779	$ (1,259)	$ 1,101	$ 2,642	$ 1,433	$ 368	$ 6,193	$ 5,544	$ 4,366

Income Taxes - Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax Rate from Continuing Operations (Detail)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income taxes at federal statutory rates	35.00%	35.00%	35.00%
State income tax, net of federal tax benefit	4.90%	5.00%	4.90%
Research and development credits	(6.10%)	(8.40%)	(4.80%)
Excess tax benefits on stock compensation	(13.10%)	(4.40%)	(0.00%)
Domestic manufacturing deduction	(3.90%)	(3.50%)	(3.20%)
Income from legal settlement excluded from taxable income	0.00%	(2.80%)	0.00%
Deemed repatriation of foreign earnings	(0.10%)	(0.20%)	(0.40%)
Foreign tax credits	(0.20%)	(0.00%)	(0.00%)
Equity compensation	0.60%	0.30%	(0.10%)
Officers' Compensation	1.20%	2.30%	2.80%
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent	0.00%	0.00%	(4.20%)
Change in the fair value of the liability related to the LNX earn-out	(0.60%)	(3.20%)	(5.00%)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%	0.00%	(3.10%)
Acquisition costs	0.90%	0.00%	0.00%
Other	0.90%	1.80%	1.30%
Effective income tax rate from continuing operation	19.90%	21.90%	23.20%

Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Deferred tax assets:
Inventory valuation and receivable allowances	$ 13,845	$ 12,768
Accrued compensation	4,555	3,267
Equity compensation	4,858	3,201
Federal and state research and development tax credit carryforwards	13,415	15,870
Gain on sale-leaseback	0	371
Other accruals	2,125	1,570
Accrued compensation	1,606	0
Capital loss carryforwards	3,562	3,562
Other temporary differences	1,500	4,011
Deferred tax Asset	45,466	44,620
Valuation allowance	(16,570)	(18,472)
Total deferred tax assets	28,896	26,148
Deferred tax liabilities:
Deferred revenue	(481)	(773)
Property and equipment depreciation	(3,749)	(2,451)
Acquired intangible assets	(28,163)	(33,826)
Tax method of accounting change	(285)	(570)
Other temporary differences	(441)	(370)
Total deferred tax liabilities	33,119	37,990
Net deferred tax (liabilities) assets	(4,223)	(11,842)
Current deferred tax assets	633	0
Non-current deferred tax assets	$ (4,856)	$ (11,842)

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 31, 2017	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016
Tax Credit Carryforward [Line Items]
Accrued deferred taxes, undistributed earnings and profits		$ 794	$ 794
Reductions as a result of a lapse of the applicable statute of limitations			273	$ 0
Settlements of previously recognized positions			793	$ 0
Domestic Tax Authority \| Research and development credit carryforwards
Tax Credit Carryforward [Line Items]
Tax credit carryforwards		406	$ 406
Domestic Tax Authority \| Research and development credit carryforwards \| Maximum
Tax Credit Carryforward [Line Items]
Tax carryforward expiration year			2033
State and Local Jurisdiction \| Research and development credit carryforwards
Tax Credit Carryforward [Line Items]
Tax credit carryforwards		13,008	$ 13,008
IRS
Tax Credit Carryforward [Line Items]
Reductions as a result of a lapse of the applicable statute of limitations		273
Settlements of previously recognized positions		$ 793
Subsequent Event \| IRS
Tax Credit Carryforward [Line Items]
Refund in connection with the conclusion of the IRS examination	$ 1,598

Income Taxes - Summary of Reserves for Unrecognized Income Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of period	$ 1,566	$ 2,190
Increases for previously recognized positions	46	79
Settlements of previously recognized positions	(793)	0
Reductions as a result of a lapse of the applicable statute of limitations	(273)	0
Increases for currently recognized positions	384	302
Reductions for previously recognized positions deemed effectively settled	0	(681)
Reductions for previously recognized positions	(126)	(324)
Unrecognized tax benefits, end of period	804	1,566	$ 2,190
Unrecognized tax benefits that would impact effective tax rate	804
Interest and penalties accrued	54	258
interest and penalties recognized	$ 30	$ 204	$ 26

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Long-term Purchase Commitment [Line Items]
Rental expenses	$ 7,774	$ 4,015	$ 3,777
Non-cancelable purchase commitments
Long-term Purchase Commitment [Line Items]
Purchase commitments for less than one year	$ 59,173

Commitments and Contingencies - Minimum Lease Payments under Non Cancelable Operating Leases (Detail) $ in Thousands	Jun. 30, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2015	$ 6,139
2016	5,595
2017	5,208
2018	4,291
2019	3,387
Thereafter	18,897
Total minimum lease payments	$ 43,517

Debt - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	May 02, 2016	Jun. 30, 2017	Jun. 27, 2017
Line of Credit Facility [Line Items]
Letters of credit outstanding		$ 5,897
Debt instrument borrowing term	5 years
Collateral, capital stock		65.00%
Term Loan
Line of Credit Facility [Line Items]
Long-term debt, gross	$ 200,000
Debt issuance costs, gross	8,026
Revolver
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 100,000		$ 400,000
Commitment fee	0.25%
LIBOR \| Revolver
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.375%
Credit Agreement
Line of Credit Facility [Line Items]
Debt issuance costs, net			(6,522)
Amended Credit Agreement
Line of Credit Facility [Line Items]
Debt issuance costs, net			$ (591)

Employee Benefit Plans - Pension, Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2017	Nov. 04, 2016
Defined Benefit Plan Disclosure [Line Items]
Net gain in accumulated other comprehensive income	$ 220,000
Foreign Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization period of prior service cost (credit)	10 years
Funded status of plan	$ 6,601,000
Net gain in accumulated other comprehensive income	220,000
Estimated future employer contributions next fiscal year	539,000
Recognized gain (loss) from OCI	0
Amount expected to be recognized from OCI next year	0
Fair value of plan assets	$ 10,925,000	$ 10,459,000
Discount rate	0.70%
Rate of compensation increases	1.00%

- Schedule of Expected Future Pension Benefits (Details) - Foreign Pension Plan $ in Thousands	Jun. 30, 2017 USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2018	$ 526
2019	678
2020	800
2021	497
2022	622
Thereafter (next 5 years)	3,928
Total	$ 7,051

Employee Benefit Plans - Schedule of Net Periodic Benefit Cost - Foreign Pension Plan - USD ($) $ in Thousands	8 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 557	$ 557
Interest cost	$ 73	73
Expected return on assets		(105)
Amortization of prior service cost		20
Net periodic benefit cost		$ 545

Employee Benefit Plans - Schedule of Related Actuarial Assumptions (Details) - Foreign Pension Plan	12 Months Ended
	Jun. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Discount rate	0.70%
Expected rate of return on Plan assets	1.50%
Expected inflation	1.00%
Rate of compensation increases	1.00%

Employee Benefit Plans - Schedule of Projected Benefit Obligation (Details) - Foreign Pension Plan - USD ($) $ in Thousands	8 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at November 4, 2016	$ 17,086
Service cost	557	$ 557
Interest cost	73	73
Employee contributions	581
Actuarial gain	(598)
Benefits paid	(563)
Plan amendment	390
Projected benefit obligation at end of year	$ 17,526	$ 17,526

Employee Benefit Plans - Schedule of Change in Plan Assets (Details) - Foreign Pension Plan $ in Thousands	8 Months Ended
	Jun. 30, 2017 USD ($)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at November 4, 2016	$ 10,459
Actual return on Plan assets	100
Company contributions	348
Employee contributions	581
Benefits paid	(563)
Fair value of plan assets at end of year	$ 10,925

Employee Benefit Plans - Reconciliation of Funded Status (Details) - Foreign Pension Plan - USD ($) $ in Thousands	Jun. 30, 2017	Nov. 04, 2016
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at end of year	$ 17,526	$ 17,086
Fair value of plan assets at end of year	10,925	$ 10,459
Funded status	$ (6,601)

- 401(k) Plan (Details) - USD ($) $ in Thousands	12 Months Ended
- 401(k) Plan (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Defined Contribution Plan Disclosure [Line Items]
Employer contributions	$ 3,206	$ 1,874	$ 1,934
Maximum
Defined Contribution Plan Disclosure [Line Items]
Employee Contribution of eligible compensation		3.00%	3.00%
401(k) Plan \| Maximum
Defined Contribution Plan Disclosure [Line Items]
Employee Contribution of eligible compensation	3.00%

Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Jan. 26, 2017	Apr. 04, 2016	Jun. 30, 2017	Jun. 30, 2016
Equity [Abstract]
Preferred stock shares authorized to issue			1,000,000	1,000,000
Preferred stock shares par value (in dollars per share)			$ 0.01	$ 0.01
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Shares sold (in shares)	6,900,000	5,175,000
Price of stock sold (in dollars per share)	$ 33.00	$ 19.25
Consideration received on transaction	$ 215,725	$ 92,788

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 194	$ 93
2005 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance under stock incentive plan	15,252,000
Exercise price of stock option, percentage	100.00%
Shares available for future grant	2,559,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share options granted	0	0	0
Intrinsic value of the options exercised	$ 3,762	$ 1,976	$ 3,373
Unrecognized compensation cost related to non-vested options granted	$ 0	$ 0
Stock Options \| 2005 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of awards	7 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation, period of recognition	1 year 6 months	1 year 7 months 6 days
Restricted stock granted	718,000	667,000
Total fair value of restricted stock awards vested	$ 19,402	$ 12,185	$ 9,078
Unrecognized compensation cost related to non-vested restricted stock	$ 12,160	$ 10,938
1997 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance under stock incentive plan	1,800,000
Shares available for future grant	302,000
Purchase price as a percentage of the lesser of the market value of such shares at either the beginning or the end of each nine-month offering period	85.00%
Percentage of employee compensation that may be uses to purchase common stock through payroll deductions, maximum	10.00%
Number of share options granted	96,000	88,000	79,000
Additional Shares Resulting From Forfeitures, Cancellations and/or Terminations from 1997 Stock Option Plan [Member] \| 2005 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in share authorized under stock incentive plan	2,000

Stock-Based Compensation - Summary of Stock Option Plans (Detail) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Number of Shares
Outstanding at beginning of period	258,000	830,000
Granted	0	0	0
Exercised	(207,000)	(524,000)
Cancelled	0	(48,000)
Outstanding at end of period	51,000	258,000	830,000
Vested and expected to vest at end of period	51,000
Exercisable at end of period	51,000
Weighted Average Exercise Price (in dollars per share)
Outstanding at beginning of period	$ 13.34	$ 13.43
Granted	0.00	0.00
Exercised	13.29	13.12
Cancelled	0.00	17.25
Outstanding at end of period	13.53	$ 13.34	$ 13.43
Vested and expected to vest at end of period	13.53
Exercisable at end of period	$ 13.53
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of period	7 months 6 days	1 year 22 days	1 year 7 months 28 days
Vested and expected to vest at end of period	7 months 6 days
Exercisable at end of period	7 months 6 days
Aggregate Intrinsic Value
Outstanding at end of period	$ 1,442
Vested and expected to vest at end of period	1,442
Exercisable at end of period	$ 1,442

Stock-Based Compensation - Summary of Nonvested Restricted Stock (Detail) - Restricted Stock - $ / shares shares in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Number of Shares
Beginning Balance	1,666	1,866
Granted	718	667
Vested	(769)	(743)
Forfeited	(51)	(124)
Ending Balance	1,564	1,666
Weighted Average Grant Date Fair Value (in dollars per share)
Beginning Balance	$ 13.09	$ 10.72
Granted	24.72	16.26
Vested	11.94	10.93
Forfeited	15.02	11.70
Ending Balance	$ 18.93	$ 13.09

Stock-Based Compensation - Stock Based Compensation Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 15,341	$ 9,574	$ 8,640
Income taxes	(5,874)	(3,727)	(3,332)
Share-based compensation expense, net of income taxes	9,467	5,847	5,308
Cost of revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	531	441	493
Selling, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	13,212	7,864	6,751
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1,598	$ 1,269	$ 1,396

Operating Segment, Geographic Information and Significant Customers - Additional Information (Details)	12 Months Ended
	Jun. 30, 2017 segment
Segment Reporting [Abstract]
Number of operating segments	1
Number of reportable segments	1

Operating Segment, Geographic Information and Significant Customers - Geographic Distribution of Revenues and Long Lived Assets from Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									$ 408,588	$ 270,154	$ 234,847
Inter-geographic revenues									0	0	0
Net revenues	$ 115,608	$ 107,317	$ 98,014	$ 87,649	$ 85,430	$ 65,898	$ 60,417	$ 58,409	408,588	270,154	234,847
Identifiable long-lived assets	51,643				28,337				51,643	28,337	13,226
US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues									341,699	220,253	189,596
Reportable Geographical Components \| US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									380,538	259,781	229,849
Inter-geographic revenues									7,637	7,911	2,806
Net revenues									388,175	267,692	232,655
Identifiable long-lived assets	50,340				28,187				50,340	28,187	13,127
Reportable Geographical Components \| Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									22,242	5,464	2,076
Inter-geographic revenues									44	447	475
Net revenues									22,286	5,911	2,551
Identifiable long-lived assets	1,288				127				1,288	127	68
Reportable Geographical Components \| Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									5,808	4,909	2,922
Inter-geographic revenues									0	0	0
Net revenues									5,808	4,909	2,922
Identifiable long-lived assets	15				23				15	23	31
Geography Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									0	0	0
Inter-geographic revenues									(7,681)	(8,358)	(3,281)
Net revenues									(7,681)	(8,358)	(3,281)
Identifiable long-lived assets	$ 0				$ 0				$ 0	$ 0	$ 0

Operating Segment, Geographic Information and Significant Customers - Net Revenue by End Market (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 115,608	$ 107,317	$ 98,014	$ 87,649	$ 85,430	$ 65,898	$ 60,417	$ 58,409	$ 408,588	$ 270,154	$ 234,847
Domestic
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									341,699	220,253	189,596
International/Foreign Military Sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 66,889	$ 49,901	$ 45,251

Operating Segment, Geographic Information and Significant Customers - Net Revenue by End Application (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Revenue from External Customer [Line Items]
Net revenues	$ 115,608	$ 107,317	$ 98,014	$ 87,649	$ 85,430	$ 65,898	$ 60,417	$ 58,409	$ 408,588	$ 270,154	$ 234,847
Radar End User Applications
Revenue from External Customer [Line Items]
Net revenues									150,441	140,289	143,475
Electronic Warfare End User Applications
Revenue from External Customer [Line Items]
Net revenues									106,446	72,118	51,419
Other End User Applications
Revenue from External Customer [Line Items]
Net revenues									$ 151,701	$ 57,747	$ 39,953

Operating Segment, Geographic Information and Significant Customers - Net Revenue by Product Grouping (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Revenue from External Customer [Line Items]
Net revenues	$ 115,608	$ 107,317	$ 98,014	$ 87,649	$ 85,430	$ 65,898	$ 60,417	$ 58,409	$ 408,588	$ 270,154	$ 234,847
Components
Revenue from External Customer [Line Items]
Net revenues									105,669	31,252	15,543
Modules and Sub-assemblies
Revenue from External Customer [Line Items]
Net revenues									161,973	126,777	107,922
Integrated Subsystems
Revenue from External Customer [Line Items]
Net revenues									$ 140,946	$ 112,125	$ 111,382

Operating Segment, Geographic Information and Significant Customers - Customers Comprising Ten Percent or More of Revenues (Detail) - Revenues	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Revenue, Major Customer [Line Items]
Concentration risk, percent	0.00%	22.00%	46.00%
Customer Concentration Risk
Revenue, Major Customer [Line Items]
Concentration risk, percent	36.00%	43.00%	57.00%
Customer Concentration Risk \| Raytheon Company
Revenue, Major Customer [Line Items]
Concentration risk, percent	20.00%	23.00%	20.00%
Customer Concentration Risk \| Lockheed Martin Corporation
Revenue, Major Customer [Line Items]
Concentration risk, percent	16.00%	20.00%	37.00%

Operating Segment, Geographic Information and Significant Customers - Programs Comprising Ten Percent or More of Revenues (Detail) - Revenues	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Concentration risk, percent	0.00%	22.00%	46.00%
SEWIP \| Program Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percent		12.00%
Aegis \| Program Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percent		10.00%	12.00%
Patriot \| Program Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percent			18.00%
F-35 \| Program Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percent			16.00%

Discontinued Operations - Additional Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jan. 23, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration				$ 1,600
Proceeds from Divestiture of Businesses	$ 0	$ 0	$ 885
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	$ 0	$ 0	892
MIS [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax			$ 892

Discontinued Operations - (Loss) Income from Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Costs of discontinued operations:
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	$ 0	$ 0	$ (892)
Loss from discontinued operations, net of income taxes	$ 0	$ 0	(4,060)
MIS [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues of discontinued operations			3,493
Costs of discontinued operations:
Cost of revenues			2,385
Selling, general and administrative			1,958
Research and development			305
Amortization of intangible assets			279
Restructuring and other charges			0
Impairment of goodwill			2,283
Loss from discontinued operations before income taxes			(3,717)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax			(892)
Tax benefit			(549)
Loss from discontinued operations, net of income taxes			$ (4,060)

Discontinued Operations - Depreciation, Amortization, Capital Expenditures, and Significant Noncash Items (Details) - MIS [Member] $ in Thousands	12 Months Ended
	Jun. 30, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation	$ 100
Amortization of intangible assets	279
Capital expenditures	0
Impairment of goodwill	2,283
Stock-based compensation expense	$ 88

Supplementary Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Unaudited consolidated quarterly statements of operations data
Net revenues	$ 115,608	$ 107,317	$ 98,014	$ 87,649	$ 85,430	$ 65,898	$ 60,417	$ 58,409	$ 408,588	$ 270,154	$ 234,847
Gross margin	53,927	50,783	47,389	39,444	38,176	31,402	29,739	28,302	191,543	127,619	114,200
Income from operations	13,008	11,695	8,958	3,742	7,654	6,819	6,369	3,131	37,403	23,973	18,355
Income from continuing operations before income taxes	11,307	10,218	6,983	2,560	8,590	6,999	6,473	3,224	31,068	25,286	18,795
Income tax (benefit) provision	2,503	3,170	1,779	(1,259)	1,101	2,642	1,433	368	6,193	5,544	4,366
Income from continuing operations	8,804	7,048	5,204	3,819	7,489	4,357	5,040	2,856	24,875	19,742	14,429
Net income	$ 8,804	$ 7,048	$ 5,204	$ 3,819	$ 7,489	$ 4,357	$ 5,040	$ 2,856	$ 24,875	$ 19,742	$ 10,369
Earnings Per Share [Abstract]
Basic net income per share (in dollars per share)	$ 0.19	$ 0.16	$ 0.13	$ 0.10	$ 0.20	$ 0.13	$ 0.15	$ 0.09	$ 0.59	$ 0.58	$ 0.32
Diluted net income per share (in dollars per share)	$ 0.19	$ 0.16	$ 0.13	$ 0.10	$ 0.19	$ 0.13	$ 0.15	$ 0.08	$ 0.58	$ 0.56	$ 0.31
Cost of revenues									$ 217,045	$ 142,535	$ 120,647
Excess tax benefit from share-based compensation recognized as a benefit to income taxes					$ 126	$ (169)	$ 247	$ 896		1,100
As Adjusted
Earnings Per Share [Abstract]
Cost of revenues						$ (1)	$ (1)	$ (1)		$ (2,845)	$ (3,981)