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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Apr. 01, 2016	Apr. 22, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 01, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Trading Symbol	MTSI
Entity Registrant Name	M/A-COM TECHNOLOGY SOLUTIONS HOLDINGS, INC.
Entity Central Index Key	0001493594
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		53,384,356

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Current assets:
Cash and cash equivalents	$ 58,187	$ 122,312
Short term investments	23,632	39,557
Accounts receivable, (less allowances of $3,330 and $5,745, respectively)	91,604	83,950
Inventories	106,972	79,943
Deferred income taxes		31,431
Income tax receivable	16,077	15,854
Prepaid and other current assets	11,553	11,172
Total current assets	308,025	384,219
Property and equipment, net	99,637	83,759
Goodwill	117,835	93,346
Intangible assets, net	279,535	243,666
Deferred income taxes	83,909	48,239
Other long-term assets	11,457	13,022
TOTAL ASSETS	900,398	866,251
Current liabilities:
Current portion of long-term debt	4,499	4,058
Accounts payable	30,037	29,311
Accrued liabilities	48,298	38,107
Total current liabilities	82,834	71,476
Long-term debt	341,396	340,504
Warrant liability	40,901	21,822
Other long-term liabilities	7,339	7,916
Deferred income taxes	13,920
Total liabilities	486,390	441,718
Commitments and contingencies (Note 12)
Stockholders' equity:
Common stock	53	53
Accumulated other comprehensive income (loss)	3,271	(2,279)
Additional paid-in capital	536,156	526,011
Treasury stock, at cost	(330)	(330)
Accumulated deficit	(125,142)	(98,922)
Total stockholders' equity	414,008	424,533
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 900,398	$ 866,251

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 3,330	$ 5,745

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Income Statement [Abstract]
Revenue	$ 133,579	$ 102,431	$ 249,353	$ 198,987
Cost of revenue	68,054	55,717	123,510	104,854
Gross profit	65,525	46,714	125,843	94,133
Operating expenses:
Research and development	26,203	20,439	51,525	39,221
Selling, general and administrative	34,617	28,247	69,303	53,475
Impairment charges	11,005		11,005
Restructuring charges	851	413	1,008	413
Total operating expenses	72,676	49,099	132,841	93,109
Income from operations	(7,151)	(2,385)	(6,998)	1,024
Other income (expense)
Warrant liability expense	(4,201)	(5,609)	(19,079)	(16,217)
Interest expense, net	(4,408)	(4,723)	(8,754)	(9,446)
Other (expense) income	(81)	(1,376)	19	(1,001)
Total other expense, net	(8,690)	(11,708)	(27,814)	(26,664)
Loss before income taxes	(15,841)	(14,093)	(34,812)	(25,640)
Income tax benefit	(3,796)	(2,917)	(5,997)	(4,500)
Loss from continuing operations	(12,045)	(11,176)	(28,815)	(21,140)
Income from discontinued operations	1,396	3,639	2,595	7,297
Net loss	$ (10,649)	$ (7,537)	$ (26,220)	$ (13,843)
Basic loss per share:
Loss from continuing operations	$ (0.23)	$ (0.22)	$ (0.54)	$ (0.43)
Income from discontinued operations	0.03	0.07	0.05	0.15
Loss per share - basic	(0.20)	(0.15)	(0.49)	(0.28)
Diluted loss per share:
Loss from continuing operations	(0.23)	(0.22)	(0.54)	(0.43)
Income from discontinued operations	0.03	0.07	0.05	0.15
Loss per share - diluted	$ (0.20)	$ (0.15)	$ (0.49)	$ (0.28)
Shares used:
Basic	53,228	50,593	53,122	49,100
Diluted	53,228	50,593	53,122	49,100

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Amounts Reclassified Out Of Accumulated Other Comprehensive Income Loss [Abstract]
Net loss	$ (10,649)	$ (7,537)	$ (26,220)	$ (13,843)
Unrealized gain on short term investments, net of tax	73		12
Foreign currency translation gain (loss), net of tax	5,647	(221)	5,538	(14)
Other comprehensive income (loss), net of tax	5,720	(221)	5,550	(14)
Total comprehensive loss	$ (4,929)	$ (7,758)	$ (20,670)	$ (13,857)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Condensed Consolidated Statement of Stockholders' Equity - 6 months ended Apr. 01, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]
Balance at Oct. 02, 2015	$ 424,533	$ 53	$ (330)	$ (2,279)	$ 526,011	$ (98,922)
Balance, Shares at Oct. 02, 2015		52,958	23
Stock option exercises	1,094				1,094
Stock option exercises, Shares		100
Vesting of restricted common stock and units	0	$ 0	$ 0	0	0	0
Vesting of restricted common stock and units, Shares		454
Issuance of common stock pursuant to employee stock purchase plan	1,977				1,977
Issuance of common stock pursuant to employee stock purchase plan, Shares		72
Shares repurchased for stock withholdings on restricted stock awards, Value	(6,152)				(6,152)
Shares repurchased for stock withholdings on restricted stock awards, Shares		(177)
Share-based compensation	13,226				13,226
Other comprehensive income, net of tax	5,550			5,550
Net income (loss)	(26,220)					(26,220)
Balance at Apr. 01, 2016	$ 414,008	$ 53	$ (330)	$ 3,271	$ 536,156	$ (125,142)
Balance, Shares at Apr. 01, 2016		53,407	23

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (26,220)	$ (13,843)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities (net of acquisitions):
Depreciation and intangibles amortization	34,078	24,872
Stock-based and other non-cash incentive compensation	13,226	9,128
Warrant liability expense	19,079	16,217
Acquired inventory step-up amortization	2,084	4,037
Deferred financing cost amortization	810	842
Prepaid compensation amortization	3,241	4,466
Gain on disposition of business	(3,750)
Deferred income taxes	(4,569)	(1,216)
Impairment charges	12,955	3,500
Other adjustments, net	298	101
Change in operating assets and liabilities (net of acquisitions):
Accounts receivable	(203)	(3,345)
Inventories	(13,415)	3,358
Prepaid expenses and other assets	(993)	679
Accounts payable	(2,880)	(5,549)
Accrued and other liabilities	2,072	(9,864)
Income taxes	(715)	(374)
Prepaid compensation		(14,586)
Deferred revenue		(16,991)
Net cash provided by operating activities	35,098	1,432
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of businesses, net	(85,516)	(208,369)
Purchases of property and equipment	(16,962)	(14,036)
Proceeds from sales and maturities of investments	23,292
Purchases of investments	(7,696)
Proceeds from discontinued operations	3,750
Strategic investments		(250)
Acquisition of intellectual property	(777)	(1,587)
Net cash used in investing activities	(83,909)	(224,242)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on notes payable	(1,750)	(1,750)
Proceeds from stock option exercises and employee stock purchases	3,071	2,871
Payments of assumed debt	(9,120)	(1,232)
Repurchase of common stock	(6,152)	(4,924)
Payments of contingent consideration and other	(1,195)	(39)
Proceeds from stock offering, net of issuance costs		127,959
Proceeds from revolving credit facility		100,000
Payments on revolving credit facility		(100,000)
Net cash (used in) provided by financing activities	(15,146)	122,885
Foreign currency effect on cash	(168)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(64,125)	(99,925)
CASH AND CASH EQUIVALENTS - Beginning of period	122,312	173,895
CASH AND CASH EQUIVALENTS - End of period	$ 58,187	$ 73,970

Summary of Significant Accounting Policies

6 Months Ended

Apr. 01, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

1.	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Unaudited Interim Financial Information—The accompanying unaudited, condensed consolidated financial statements have been prepared according to the rules and regulations of the United States (the “U.S.”) Securities and Exchange Commission (“SEC”) and, in the opinion of management, reflect all adjustments, which include normal recurring adjustments, necessary for a fair statement of the condensed consolidated balance sheets, condensed consolidated statements of operations, condensed consolidated statement of comprehensive loss and condensed consolidated statements of cash flows of M/A-COM Technology Solutions Holdings, Inc. (“MACOM”, the “Company”, “us”, “we” or “our”) for the periods presented. We prepare our interim financial information using the same accounting principles we use for our annual audited consolidated financial statements. Certain information and note disclosures normally included in the annual audited consolidated financial statements have been condensed or omitted in accordance with prescribed SEC rules. We believe that the disclosures made in our condensed consolidated financial statements and the accompanying notes are adequate to make the information presented not misleading.

The consolidated balance sheet at October 2, 2015 is as reported in our audited consolidated financial statements as of that date. Our accounting policies are described in the notes to our October 2, 2015 consolidated financial statements, which were included in our Annual Report on Form 10-K for our fiscal year ended October 2, 2015 filed with the SEC on November 24, 2015. We recommend that the financial statements included in this Quarterly Report on Form 10-Q be read in conjunction with the consolidated financial statements and notes included in our Annual Report on Form 10-K for our fiscal year ended October 2, 2015.

Immaterial Restatement - As disclosed in our Quarterly Report on Form 10-Q for the three and nine months ended July 3, 2015, we identified certain items that were incorrectly classified as Acquisition of a business cash outflows related to the BinOptics Acquisition in the Investing activities section of our statement of cash flows for the six months ended April 3, 2015. The most significant item was an escrow payment of $14.6 million associated with acquired employee retention which was incorrectly classified as an investing activity instead of an operating activity in our statement of cash flows for the six months ended April 3, 2015. Our statement of cash flows for the six months ended April 3, 2015 have been restated to correct this error. For the six months ended April 3, 2015 the effect of this restatement is outlined below:


	Six Months Ended
	As reported			Adjustment			As adjusted
Net cash provided by operating activities	$	16,018		$	(14,586	)	$	1,432
Net cash used in investing activities	$	(238,828	)	$	14,586		$	(224,242	)

For additional information related to this and other acquisition related items refer to Note 3 - Acquisitions included in Item 8 of Part II, “Financial Statements and Supplementary Data,” of our 2015 Annual Report on Form 10-K for the fiscal year ended October 2, 2015.

Principles of Consolidation—We have one reportable segment, semiconductors and modules. The accompanying consolidated financial statements include our accounts and the accounts of our majority-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Certain prior period financial statement amounts, including Automotive business discontinued operations, have been adjusted to conform to current reported presentation.

We have a 52 or 53-week fiscal year ending on the Friday closest to the last day of September. The fiscal years 2016 and 2015 include 52 weeks. To offset the effect of holidays, for fiscal years in which there are 53 weeks, we include the extra week arising in our fiscal years in the first quarter.

Use of Estimates—The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities during the reporting periods, the reported amounts of revenue and expenses during the reporting periods, and the disclosure of contingent assets and liabilities at the date of the financial statements. On an ongoing basis, we base estimates and assumptions on historical experience, currently available information, and various other factors that management believes to be reasonable under the circumstances. Actual results may differ materially from these estimates and assumptions.

Recent Accounting Pronouncements—Our Recent Accounting Pronouncements are described in the notes to our October 2, 2015 consolidated financial statements, which were included in our Annual Report on Form 10-K.

In April 2015, the FASB issued ASU 2015-03 related to the simplification of the presentation of debt issuance costs. The standard requires entities to present such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs is reported as interest expense. The ASU provides that debt issuance costs are analogous to debt discounts and reduce the proceeds of borrowing which increases the effective interest rate. Prior to the amendment, debt issuance costs were reported in the balance sheet as an asset. The amended guidance is effective for financial statements issued for fiscal years beginning after December 15, 2015, and requires retrospective adoption. As of April 1, 2016, we have $6.3 million of unamortized deferred finance costs which under the amendment would be reclassified on our balance sheet. Any remaining deferred financing costs such as of September 30, 2016 will be reclassified when we adopt the amendment in fiscal 2017.

In November 2015, the FASB issued Accounting Standards Update (ASU) No. 2015-17, Balance Sheet Classification of Deferred Taxes. This update simplifies the presentation of deferred income taxes by eliminating the current requirements to classify deferred income tax assets and liabilities between current and noncurrent. The amendments in this update require that deferred tax assets and liabilities be classified as noncurrent in a classified statement of financial position. For public business entities, the standard is effective in the annual reporting periods beginning after December 15, 2016. Early adoption is permitted as of the beginning of any interim or annual reporting period and can be applied either prospectively or retrospectively to all periods presented. We have elected to adopt this standard early and have implemented the change prospectively as of the second quarter of fiscal 2016; prior periods were not adjusted. As of the second quarter of fiscal 2016, we included $31.4 million of current deferred income tax assets with our noncurrent deferred income tax assets; no adjustments were made to deferred tax liabilities.

In February 2016, the FASB issued ASU 2016-02, Leases, which increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. Certain qualitative and quantitative disclosures are required, as well as a retrospective recognition and measurement of impacted leases. The new guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2018, with early adoption permitted. We are evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which simplifies several aspects of the accounting for employee share-based payment transactions for both public and nonpublic entities, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. Early adoption is permitted and the updated standard must be adopted no later than our fiscal first quarter of fiscal 2018. We are evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

Acquisitions

6 Months Ended

Apr. 01, 2016

Business Combinations [Abstract]

Acquisitions

2. ACQUISITIONS

Acquisition of FiBest Limited—On December 9, 2015, we completed the acquisition of FiBest Limited (“FiBest Acquisition”) a Japan-based merchant market component supplier of optical sub-assemblies. We acquired FiBest to expand our position in optical networking components. In connection with the FiBest Acquisition, all of the outstanding equity interests (including outstanding options) of FiBest were exchanged for aggregate consideration of $59.1 million including net cash of $47.5 million and assumed debt of $11.6 million. We funded the FiBest Acquisition with cash on hand. For the three and six months ended April 1, 2016, we recorded transaction costs of $0.1 million and $2.7 million as selling, general and administrative expense related to this acquisition. The FiBest Acquisition was accounted for as a stock purchase and the operations of FiBest have been included in our consolidated financial statements since the date of acquisition.

We recognized the FiBest assets acquired and liabilities assumed based upon the fair value of such assets and liabilities measured as of the date of acquisition. The aggregate purchase price for FiBest is being allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The excess of the purchase price over the fair value of the acquired net assets represents cost and revenue synergies specific to the Company, as well as non-capitalizable intangible assets, such as the employee workforce acquired, and has been allocated to goodwill, none of which will be tax deductible.

We expect to finalize our allocation of purchase price during calendar year 2016. The preliminary allocation of purchase price as of April 1, 2016, is as follows (in thousands):


	Six Months Ended April 1, 2016
	Preliminary Allocation
Current assets	$	10,850
Intangible assets		45,650
Other assets		3,334

Total assets acquired		59,834

Liabilities assumed:
Debt		11,627
Deferred income taxes		12,932
Other liabilities		3,968

Total liabilities assumed		28,527

Net assets acquired		31,307

Consideration:
Cash paid upon closing, net of cash acquired		47,517

Goodwill	$	16,210

The components of the acquired intangible assets on a preliminary basis were as follows (in thousands):


	Amount		Useful Lives (Years)
Developed technology	$	9,400	7
Customer relationships		36,250	10

	$	45,650

The overall weighted-average life of the identified intangible assets acquired in the FiBest Acquisition is estimated to be 9.4 years and the assets are being amortized over their estimated useful lives based upon the pattern over which we expect to receive the economic benefit from these assets.

The purchase accounting is preliminary and subject to completion including the areas of taxation and certain fair value measurements, particularly the finalization of the valuation assessment of the acquired tangible and intangible assets. The adjustments arising from the completion of the outstanding matters may materially affect the preliminary purchase accounting.

The following is a summary of FiBest revenue and earnings included in MACOM’s accompanying condensed consolidated statements of operations for the three and six months ended months ended April 1, 2016 (in thousands):


	Three Months Ended			Six Months Ended
Revenue	$	8,435		$	11,105
Loss before income taxes		(1,747	)		(2,558	)

Unaudited Supplemental Pro Forma Data—The pro forma statements of operations data for the three and six months ended April 1, 2016 and April 3, 2015, below, give effect to the FiBest Acquisition, described above, as if it had occurred at October 4, 2014. These amounts have been calculated after applying our accounting policies and adjusting the results of FiBest to reflect; transaction costs, retention compensation expense, the impact of the step-up to the value of acquired inventory, as well as the additional intangible amortization that would have been charged assuming the fair value adjustments had been applied and incurred since October 4, 2014. This pro forma data is presented for informational purposes only and does not purport to be indicative of our future results of operations.


	Three Months Ended						Six Months Ended
	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Revenue	$	133,579		$	109,763		$	256,979		$	213,651
Net loss		(11,531	)		(8,798	)		(26,785	)		(19,115	)

Acquisition of Aeroflex/Metelics Inc.—On December 14, 2015, we acquired Aeroflex/Metelics, Inc. (“Metelics Acquisition”), a diode supplier for aggregate cash consideration of $38.0 million, subject to customary working capital and other adjustments. We acquired Metelics to expand our diode business. We funded the acquisition with cash on hand. The Metelics Acquisition was accounted for as a stock purchase and the operations of Metelics have been included in our consolidated financial statements since the date of acquisition. For the six months ended April 1, 2016, we recorded transaction costs of $0.5 million as selling, general and administrative expenses related to this acquisition. For the three months ended April 1, 2016 the transaction costs were not material.

We recognized the Metelics assets acquired and liabilities assumed based upon the fair value of such assets and liabilities measured as of the date of acquisition. The aggregate purchase price for Metelics is being allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The excess of the purchase price over the fair value of the acquired net assets represents cost and revenue synergies specific to the Company, as well as non-capitalizable intangible assets, such as the employee workforce acquired, and has been allocated to goodwill, which will be tax deductible due to a 338(h)(10) election.

We expect to finalize our allocation of purchase price during calendar year 2016. The adjusted allocation of purchase price as of April 1, 2016, is as follows (in thousands):


	Preliminary Allocation		Allocation Adjustments			Adjusted Allocation
Current assets	$	15,250	$	(1,835	)		13,415
Intangible assets		19,700		—			19,700
Other assets		6,249		—			6,249

Total assets acquired		41,199		(1,835	)		39,364

Liabilities assumed:
Other liabilities		7,401		—			7,401

Total liabilities assumed		7,401		—			7,401

Net assets acquired		33,798		(1,835	)		31,963

Consideration:
Cash paid upon closing, net of cash acquired		38,000		—			38,000

Goodwill	$	4,202	$	1,835		$	6,037

The components of the acquired intangible assets on a preliminary basis were as follows (in thousands):


	Amount		Useful Lives (Years)
Developed technology	$	1,000	7
Customer relationships		18,700	10

	$	19,700

The overall weighted-average life of the identified intangible assets acquired in the Metelics Acquisition is estimated to be 9.8 years and the assets are being amortized over their estimated useful lives based upon the pattern over which we expect to receive the economic benefit from these assets.

During the quarter ended April 1, 2016, we recorded an adjustment of $1.8 million primarily associated with inventory which reduced current assets acquired.

The purchase accounting is preliminary and subject to completion including certain fair value measurements, particularly the finalization of the valuation assessment of the acquired tangible and intangible assets. The adjustments arising from the completion of the outstanding matters may materially affect the preliminary purchase accounting.

The following is a summary of Metelics revenue and earnings included in our accompanying condensed consolidated statements of operations for the three and six months ended April 1, 2016 (in thousands):


	Three Months Ended			Six Months Ended
Revenue	$	10,345		$	12,252
Loss before income taxes		(220	)		(174	)

Unaudited Supplemental Pro Forma Data—The pro forma statements of operations data for the three and six months ended April 1, 2016 and April 3, 2015, below, give effect to the Metelics Acquisition, described above, as if it had occurred at October 4, 2014. These amounts have been calculated after applying our accounting policies and adjusting the results of Metelics to reflect the transaction costs, the impact of the step-up to the value of acquired inventory, as well as the additional intangible amortization that would have been charged assuming the fair value adjustments had been applied and incurred since October 4, 2014. This pro forma data is presented for informational purposes only and does not purport to be indicative of our future results of operations.


	Three Months Ended						Six Months Ended
	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Revenue	$	133,579		$	112,009		$	258,189		$	219,392
Net loss		(10,119	)		(7,995	)		(25,703	)		(15,748	)

Acquisition of BinOptics Corporation—On December 15, 2014, we completed the acquisition of BinOptics Corporation (“BinOptics Acquisition”) a supplier of high-performance photonic semiconductor products. In accordance with the related agreement and plan of merger, all of the outstanding equity interests (including outstanding warrants) of BinOptics were exchanged for aggregate consideration of approximately $208.4 million in cash. In addition we paid $14.6 million as part of a related retention escrow agreement designed to retain certain BinOptics employees. This $14.6 million was included in the terms of the purchase agreement and has been accounted for as a post-closing prepaid expense. We funded the BinOptics Acquisition with a combination of cash on hand and the incurrence of $100.0 million of additional borrowings under our existing Revolving Facility. For the six months ended April 3, 2015, we recorded transaction costs of $4.1 million related to the BinOptics Acquisition.

The BinOptics Acquisition was accounted for as a stock purchase and the operations of BinOptics have been included in our consolidated financial statements since the date of acquisition.

We have recognized BinOptics’ assets acquired and liabilities assumed based upon the fair value of such assets and liabilities measured as of the date of acquisition. The aggregate purchase price for BinOptics has been allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The excess of the purchase price over the fair value of the acquired net assets represents cost and revenue synergies specific to the Company, as well as non-capitalizable intangible assets, such as the employee workforce acquired, and has been allocated to goodwill, none of which is tax deductible.

We finalized our allocation of purchase price during the first quarter of fiscal year 2016. The final allocation of purchase price as of January 1, 2016, is as follows (in thousands):


	October 2, 2015 Allocation		Allocation Adjustments			January 1, 2016 Adjusted Allocation

Current assets	$	23,674	$	(1,100	)	$	22,574
Intangible assets		136,900		400			137,300
Other assets		9,194		—			9,194

Total assets acquired		169,768		(700	)		169,068

Liabilities assumed:
Debt		2,535		—			2,535
Deferred income taxes		33,345		99			33,444
Other liabilities		13,106		—			13,106

Total liabilities assumed		48,986		99			49,085

Net assets acquired		120,782		(799	)		119,983

Consideration:
Cash paid upon closing, net of cash acquired		208,352		—			208,352

Goodwill	$	87,570	$	799		$	88,369

The components of the acquired intangible assets were as follows (in thousands):


	Amount		Useful Lives (Years)
Developed technology	$	17,500	7
Customer relationships		119,800	10

	$	137,300

The overall weighted-average life of the identified intangible assets acquired in the BinOptics Acquisition is estimated to be 9.6 years and the assets are being amortized over their estimated useful lives based upon the pattern over which we expect to receive the economic benefit from these assets.

Unaudited Supplemental Pro Forma Data—The pro forma statements of operations data for the three and six months ended April 3, 2015, below, give effect to the BinOptics Acquisition, described above, as if it had occurred at September 28, 2013. These amounts have been calculated after applying our accounting policies and adjusting the results of BinOptics to reflect the transaction costs, retention compensation expense, the impact of the step-up to the value of the acquired inventory, as well as additional intangible amortization that would have been charged assuming the fair value adjustments to intangible assets had been applied and incurred since September 28, 2013. This pro forma data is presented as of April 3, 2015 for informational purposes only and does not purport to be indicative of our future results of operations.


	Three Months Ended			Six Months Ended
	April 3, 2015			April 3, 2015
Revenue	$	104,387		$	237,966
Net loss		(11,387	)		(14,750	)

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
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+ Details

Discontinued Operations

6 Months Ended

Apr. 01, 2016

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

3. DISCONTINUED OPERATIONS

In August 2015, we sold our Automotive business to Autoliv ASP Inc. (“Autoliv”) as the Automotive business was not consistent with our long-term strategic vision from both a growth and profitability perspective. The agreed consideration included $82.1 million in cash paid at closing and $18.0 million payable in eighteen months pending resolution of any contingencies as part of an indemnification agreement, plus the opportunity to receive up to an additional $30.0 million in cash based on achievement of revenue-based earnout targets through 2019. Additionally, we entered into a Consulting Agreement pursuant to which we may provide Autoliv with certain non-design advisory services for a period of two years following the closing of the transaction for up to $15.0 million in cash.

During fiscal year 2015, we recorded a pre-tax gain on the sale of the Automotive business of $61.8 million based on the $82.1 million received at closing on August 17, 2015 as described above. The remainder of the consideration to be received from Autoliv, if any, including any amounts related to the consulting agreement, will be accounted for in discontinued operations when the contingencies are finalized and the proceeds, if any, become realizable over the next several years.

The accompanying consolidated statement of operations includes the following operating results related to this divested business (in thousands):


	Three Months Ended					Six Months Ended
	April 1, 2016		April 3, 2015			April 1, 2016		April 3, 2015
Revenue	$	—	$	22,454		$	—	$	40,762
Cost of revenue		—		15,161			—		26,687

Gross profit		—		7,293			—		14,075
Operating expenses:
Research and development		—		622			—		1,314
Selling, general and administrative		—		980			—		1,351
Restructuring charges		—		—			—		—

Total operating expenses		—		1,602			—		2,665

Income from discontinued operations		—		5,691			—		11,410
Other income		1,875		—			3,750		—
Gain on sale		308		—			308		—

Income before income taxes		2,183		5,691			4,058		11,410
Income tax provision		787		2,052			1,463		4,113

Income from discontinued operations	$	1,396	$	3,639		$	2,595	$	7,297


Above includes depreciation & amortization of	$	—	$	57		$	—	$	123
Cashflow from Operating Activities		—		2,227			—		3,744
Cashflow from Investing Activities		3,750		(250	)		3,750	$	(250	)

Other income of $3.8 million was recorded during the three and six months ended April 1, 2016 related to the consulting agreement. The gain on sale of $0.3 million recorded during the three months ended April 1, 2016 related to the adjustment of accruals established at the time of the sale of the Automotive business. Amounts recorded during the three and six months ended April 3, 2015 were from ongoing operating activities prior to the sale.

- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-Section 45
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-Name Accounting Standards Codification
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+ Details

Investments

6 Months Ended

Apr. 01, 2016

Investments, Debt and Equity Securities [Abstract]

Investments

4. INVESTMENTS

During the fiscal fourth quarter of 2015, we purchased investments of approximately $40.2 million. All investments are classified as available-for-sale. The amortized cost, gross unrealized holding gains or losses, and fair value of our available-for-sale investments by major investments type, as of April 1, 2016, are summarized in the tables below (in thousands):


	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Aggregate Fair Value

Corporate bonds	$	14,676	$	—	$	(72	)	$	14,604
Agency bonds		9,035		—		(7	)		9,028

Total investments	$	23,711	$	—	$	(79	)	$	23,632


	October 2, 2015		Net Realized/Unrealized Losses			Purchases and Issuances		Sales and Settlements			April 1, 2016
Corporate bonds	$	24,462	$	(257	)	$	7,696	$	(17,297	)	$	14,604
Agency bonds		15,095		(72	)		—		(5,995	)		9,028

Total investments	$	39,557	$	(329	)	$	7,696	$	(23,292	)	$	23,632

The contractual maturities of available-for-sale investments were as follows (in thousands):


	April 1, 2016		October 2, 2015
Less than 1 year	$	10,831	$	16,259
Over 1 year		12,801		23,298

Total investments	$	23,632	$	39,557

Available-for-sale investments are reported at fair value and as such, their associated unrealized gains and losses are reported as a separate component of stockholders’ equity within accumulated other comprehensive loss.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Fair Value

6 Months Ended

Apr. 01, 2016

Fair Value Disclosures [Abstract]

Fair Value

5. FAIR VALUE

We group our financial assets and liabilities measured at fair value on a recurring basis in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 - Quoted prices in active markets for identical assets or liabilities.

Level 2 - Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets with insufficient volume or infrequent transactions (less active markets), or model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data.

Level 3 - Fair value is derived from valuation techniques in which one or more significant inputs are unobservable, including assumptions and judgments made by us.

Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis

We measure certain assets and liabilities at fair value on a recurring basis such as our financial instruments and derivatives. There have been no transfers between Level 1, 2 or 3 assets or liabilities during the three and six months ended April 1, 2016.

Money market funds are actively traded and consist of highly liquid investments with original maturities of 90 days or less. They are measured at their net asset value (“NAV”) and classified as Level 1. Corporate and agency bonds are categorized as Level 2 assets except where sufficient quoted prices exist in active markets, in which case such securities are categorized as Level 1 assets. These securities are valued using third-party pricing services. These services may use, for example, model-based pricing methods that utilize observable market data as inputs. Broker dealer bids or quotes on securities with similar characteristics may also be used.

The fair values of the contingent consideration liabilities were estimated based upon a risk-adjusted present value of the probability-weighted expected payments by us. Specifically, we considered base, upside and downside scenarios for the operating metrics upon which the contingent payments are to be based. Probabilities were assigned to each scenario and the probability-weighted payments were discounted to present value using risk-adjusted discount rates. The maximum possible payment of contingent consideration is $1.5 million.

The fair value of the stock warrants has been estimated using a Black-Scholes option pricing model giving consideration to the quoted market price of the common stock on that date, an exercise price of $14.04, expected life of 4.7 years, expected volatility of 36.9% and risk free rate of 1.2%. Any significant change in these assumptions could have a material impact on the fair value of the stock warrants.

These estimates include significant judgments and actual results could materially differ and have a material impact upon the values of the recorded liabilities. Any changes in the estimated fair values of the liabilities in the future will be reflected in our earnings and such changes could be material.

Assets and liabilities measured at fair value on a recurring basis consist of the following (in thousands):


	April 1, 2016
	Fair Value		Active Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets
Money market funds	$	2,117	$	2,117	$	—	$	—
Agency bonds		9,028		—		9,028		—
Corporate bonds		14,604		—		14,604		—

Total assets measured at fair value	$	25,749	$	2,117	$	23,632	$	—

Liabilities
Contingent consideration	$	796	$	—	$	—	$	796
Common stock warrant liability		40,901		—		—		40,901

Total liabilities measured at fair value	$	41,697	$	—	$	—	$	41,697


	October 2, 2015
	Fair Value		Active Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets
Money market funds	$	15,000	$	15,000	$	—	$	—
US treasuries and agency bonds		15,095		—		15,095		—
Corporate bonds		24,462		—		24,462		—

Total assets measured at fair value	$	54,557	$	15,000	$	39,557	$	—

Liabilities
Contingent consideration	$	1,150	$	—	$	—	$	1,150
Common stock warrant liability		21,822		—		—		21,822

Total liabilities measured at fair value	$	22,972	$	—	$	—	$	22,972

The changes in assets and liabilities with inputs classified within Level 3 of the fair value hierarchy consist of the following (in thousands):


	October 2, 2015		Net Realized/Unrealized Losses Included in Earnings		Purchases and Issuances		Sales and Settlements			Transfers in and/or (out) of Level 3		April 1, 2016
Contingent consideration	$	1,150	$	46	$	—	$	(400	)	$	—	$	796

Common stock warrant liability	$	21,822	$	19,079	$	—	$	—		$	—	$	40,901


	October 3, 2014		Net Realized/Unrealized Losses Included in Earnings		Purchases and Issuances		Sales and Settlements		Transfers in and/or (out) of Level 3		April 3, 2015
Trading Securities	$	250	$	—	$	250	$	—	$	—	$	500

Contingent consideration	$	820	$	—	$	—	$	—	$	—	$	820

Common stock warrant liability	$	15,801	$	16,217	$	—	$	—	$	—	$	32,018

- 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

Inventories

6 Months Ended

Apr. 01, 2016

Inventory Disclosure [Abstract]

Inventories

6. INVENTORIES

Inventories consist of the following (in thousands):


	April 1, 2016		October 2, 2015
Raw materials	$	59,173	$	44,329
Work-in-process		11,104		3,086
Finished goods		36,695		32,528

Total	$	106,972	$	79,943

Property, Plant and Equipment

6 Months Ended

Apr. 01, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

7. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consists of the following (in thousands):


	April 1, 2016			October 2, 2015
Land, buildings and improvements	$	12,559		$	10,981
Construction in process		20,092			25,898
Machinery and equipment		109,755			89,852
Leasehold improvements		12,779			9,161
Furniture and fixtures		1,809			983
Computer equipment and software		11,586			9,307

Total property and equipment		168,580			146,182
Less accumulated depreciation and amortization		(68,943	)		(62,423	)

Property and equipment, net	$	99,637		$	83,759

Depreciation and amortization expense related to property, plant and equipment for the three and six months ended April 1, 2016 was $5.2 million and $9.5 million, respectively. Depreciation and amortization expense related to property and equipment for the three and six months ended April 3, 2015 was $4.2 million and $8.0 million, respectively.

Debt

6 Months Ended

Apr. 01, 2016

Debt Disclosure [Abstract]

Debt

8. DEBT

On May 8, 2014 we entered into a credit agreement (“Credit Agreement”) with a syndicate of lenders.

Our Credit Agreement provides for term loans in an aggregate principal amount of $350.0 million, which mature in May 2021 (Term Loans) and a revolving credit facility of $130.0 million, which matures in May 2019 (Revolving Facility). The effective interest rate on our Term Loans was 4.5% as of April 1, 2016. We also pay a quarterly unused line fee for the Revolving Facility in the range of 0.25% to 0.375% (based on our total net leverage ratio being within certain defined ranges) as well as overall agency fees. As of April 1, 2016, we had no borrowings under the Revolving Facility.

We incurred $8.7 million in fees for the issuance of the Credit Agreement which were recorded as deferred financing costs and are being amortized over the life of Credit Agreement as interest expense. As of April 1, 2016, approximately $6.3 million of deferred financing costs remain unamortized.

The Credit Agreement contains covenants that require among other items maintenance of certain financial ratios. As of April 1, 2016, we were in compliance with all financial covenants related to our debt obligations under the Credit Agreement.

As of April 1, 2016, the following remained outstanding on the Term Loans (in thousands):


Principal balance	$	343,875
Unamortized discount		(1,906	)

Total Term Loans		341,969
Current portion		3,500

Long-term, less current portion	$	338,469

As of April 1, 2016, the minimum principal payments under the Term Loans in future fiscal years was as follows (in thousands):


2016 (rest of fiscal year)	$	1,750
2017		3,500
2018		3,500
2019		3,500
2020		3,500
Thereafter		328,125

Total	$	343,875

The fair value of the Term Loans was estimated to be approximately $343.4 million as of April 1, 2016 and was determined using Level 3 inputs, including a quoted rate from a bank.

Intangible Assets

6 Months Ended

Apr. 01, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

9. INTANGIBLE ASSETS

Amortization expense related to intangible assets is as follows (in thousands):


	Three Months Ended				Six Months Ended
	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
Cost of revenue	$	6,642	$	7,347	$	13,809	$	12,706
Selling, general and administrative		6,304		3,096		10,727		4,149

Total	$	12,946	$	10,443	$	24,536	$	16,855

Intangible assets consist of the following (in thousands):


	April 1, 2016			October 2, 2015
Acquired technology	$	164,365		$	162,536
Customer relationships		202,646			144,070
In-process research and development		8,000			8,000
Trade name		3,400			3,400

Total		378,411			318,006
Less accumulated amortization		(98,876	)		(74,340	)

Intangible assets — net	$	279,535		$	243,666

A summary of the activity in intangible assets and goodwill follows (in thousands):


	Total			Acquired Technology			Customer Relationships		In-Process Research and Development		Trade Name		Goodwill
Balance at October 2, 2015	$	411,352		$	162,536		$	144,070	$	8,000	$	3,400	$	93,346
Acquired		88,796			10,400			55,350		—		—		23,046
Currency translation adjustment		5,505			836			3,226		—		—		1,443
Other intangibles purchased		681			681			—		—		—		—
Impairments of intangible assets		(10,088	)		(10,088	)		—		—		—		—

Balance at April 1, 2016	$	496,246		$	164,365		$	202,646	$	8,000	$	3,400	$	117,835

As of April 1, 2016, our estimated amortization of our intangible assets in future fiscal years, subject to the completion of the purchase price allocation for the FiBest and Metelics acquisitions, was as follows (in thousands):


	2016 Remaining		2017		2018		2019		2020		Thereafter		Total
Amortization expense	$	25,124		50,312		46,911		40,383		32,604		72,802	$	268,136

Our trade name is an indefinite-lived intangible assets. During development, in-process research and development (IPR&D) is not subject to amortization and is tested for impairment annually or more frequently if events or changes in circumstances indicate that the asset might be impaired. The impairment test consists of a comparison of the fair value to its carrying amount. If the carrying value exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. Once an IPR&D project is complete, it becomes a definite long-lived intangible asset and is evaluated for impairment in accordance with our policy for long-lived assets.

Accumulated amortization for acquired technology and customer relationships was $64.5 million and $34.4 million, respectively, as of April 1, 2016, and $39.4 million and $12.8 million, respectively, as of April 3, 2015.

During the second quarter of fiscal year 2016, we made a strategic decision to exit the product line and end programs associated with our GaN-on Silicon Carbide license and technology transfer to focus on development of our GaN-on-Silicon efforts. As a result of this strategic decision, we determined that the intangible assets and contractual commitments under the long term technology licensing and transfer agreement signed in July 2013, as well as certain dedicated fixed assets and inventory, would no longer have any future benefit. The associated charges incurred during the second quarter of fiscal 2016 was $13.0 million which included a write-off of $10.1 million of intangible assets, $0.6 million of fixed assets, $0.3 million of contractual commitments and $2.0 million of inventory.

Stockholders' Equity

6 Months Ended

Apr. 01, 2016

Equity [Abstract]

Stockholders' Equity

10. STOCKHOLDERS’ EQUITY

We have authorized 10 million shares of $0.001 par value preferred stock and 300 million shares of $0.001 par value common stock as of April 1, 2016. The outstanding shares of our common stock as of April 1, 2016 and October 2, 2015, presented in the accompanying consolidated statements of stockholders’ equity exclude 5,100 and 11,000 unvested shares of restricted stock awards, respectively, issued as compensation to employees that remained subject to forfeiture.

Common Stock Warrants—In March 2012, we issued warrants to purchase 1,281,358 shares of common stock for $14.05 per share. The warrants expire December 21, 2020, or earlier as per the terms of the agreement, including immediately following consummation of a sale of all or substantially all assets or capital stock or other equity securities, including by merger, consolidation, recapitalization, or similar transactions. We do not currently have sufficient registered and available shares to immediately satisfy a request for registration, if such a request were made. As of April 1, 2016, no exercise of the warrants had occurred and no request had been made to register the warrants or any underlying securities for resale by the holders.

We are recording the estimated fair values of the warrants as a long-term liability in the accompanying consolidated financial statements with changes in the estimated fair value being recorded in the accompanying statements of operations. The following is a summary of the activity of the warrant liability (in thousands):


Balance-October 2, 2015	$	21,822
Change in estimated fair value		19,079

Balance-April 1, 2016	$	40,901

- 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
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Subparagraph (SX 210.3-04)
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

+ Details

Earnings (Loss) Per Share

6 Months Ended

Apr. 01, 2016

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

11. EARNINGS (LOSS) PER SHARE

The following table sets forth the computation for basic and diluted net loss per share of common stock (in thousands, except per share data):


	Three Months Ended						Six Months Ended
	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Numerator:
Loss from continuing operations	$	(12,045	)	$	(11,176	)	$	(28,815	)	$	(21,140	)
Income from discontinued operations		1,396			3,639			2,595			7,297

Net loss	$	(10,649	)	$	(7,537	)	$	(26,220	)	$	(13,843	)

Warrant liability gain		—			—			—			—

Net loss attributable to common stockholders	$	(10,649	)	$	(7,537	)	$	(26,220	)	$	(13,843	)

Denominator:
Weighted average common shares outstanding-basic		53,228			50,593			53,122			49,100
Dilutive effect of options and warrants		—			—			—			—

Weighted average common shares outstanding-diluted		53,228			50,593			53,122			49,100

Common stock (loss) earnings per share-basic:
Continuing operations	$	(0.23	)	$	(0.22	)	$	(0.54	)	$	(0.43	)
Discontinued operations		0.03			0.07			0.05			0.15

Net common stock loss per share-basic	$	(0.20	)	$	(0.15	)	$	(0.49	)	$	(0.28	)

Common stock (loss) earnings per share-diluted:
Continuing operations	$	(0.23	)	$	(0.22	)	$	(0.54	)	$	(0.43	)
Discontinued operations		0.03			0.07			0.05			0.15

Net common stock loss per share-diluted	$	(0.20	)	$	(0.15	)	$	(0.49	)	$	(0.28	)

The following common equivalent shares were excluded from the calculation from net income per share as their inclusion would have been antidilutive (in thousands):


	Three Months Ended				Six Months Ended
	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
Restricted stock units and awards		935		721		900		704
Stock options		381		441		384		666
Warrants		823		746		797		444

Total common stock equivalent shares excluded		2,139		1,908		2,081		1,815

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Apr. 01, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. COMMITMENTS AND CONTINGENCIES Litigation—From time to time we may be subject to commercial disputes, employment issues, claims by other companies in the industry that we have infringed their intellectual property rights and other similar claims and litigations. Any such claims may lead to future litigation and material damages and defense costs. Other than as set forth below, we were not involved in any material pending legal proceedings during the quarter ended April 1, 2016. *Class Action Suit Against Mindspeed Technologies, Inc.* On March 10, 2015, Philip Alvarez, a former employee of Mindspeed Technologies, Inc. (“Mindspeed”) filed a putative class action lawsuit against Mindspeed in the Superior Court of California for the County of Orange. On April 24, 2015, Alvarez filed a First Amended Complaint adding our subsidiary M/A-COM Technology Solutions Inc. as a defendant. The lawsuit alleged, among other things, that Alvarez and certain other employees who designed and manufactured hardware systems for Mindspeed or M/A-COM Technology Solutions Inc. between March 10, 2011 and the present were misclassified as exempt employees under California law. The lawsuit seeks recovery of alleged unpaid overtime wages, meal and rest period premiums, penalties and attorneys’ fees. We dispute the allegations of the lawsuit. On June 15, 2015, Mindspeed removed the action to the United States District Court for the Central District of California. On July 15, 2015, Plaintiff filed a Motion to Remand, which Motion was denied in an Order dated September 9, 2015. The parties have reached an agreement for the dismissal of all class action allegations and claims in the action, as well as certain other claims against Mindspeed and M/A-COM Technology Solutions Inc. and Plaintiff filed a Second Amended Complaint effectuating this agreement. Accordingly, the only claims remaining in the action were those of Alvarez on an individual basis. Subsequently, the parties reached a final and confidential resolution of the matter. *GaN Lawsuit Against Infineon*. On April 26, 2016, we and our wholly-owned subsidiary Nitronex, LLC brought suit against International Rectifier Corporation (“International Rectifier”), Infineon Technologies Americas Corporation, and Infineon Technologies AG (collectively, “Infineon”) in the Federal District Court for the Central District of California, seeking injunctive relief, monetary damages, and specific performance of certain contractual obligations. The suit arises out of agreements relating to GaN patents that were executed several years ago by Nitronex Corporation (acquired by MACOM in 2014) and International Rectifier (acquired by Infineon AG in 2015). We assert claims for breach of contract, breach of the covenant of good faith and fair dealing, declaratory judgement of contractual rights, and declaratory judgment of non-infringement of patents. If successful, the relief sought would, among other remedies, require International Rectifier and Infineon to assign back to MACOM certain GaN-related Nitronex patents that were previously assigned to International Rectifier. With respect to the above and other legal proceedings, we have not been able to reasonably estimate the amount or range of any possible loss, and accordingly has not accrued or disclosed any related amounts of possible loss in the accompanying consolidated financial statements.

Restructurings

6 Months Ended

Apr. 01, 2016

Restructuring and Related Activities [Abstract]

Restructurings

13. RESTRUCTURINGS

We have periodically implemented restructuring actions in connection with broader plans to reduce staffing, reduce our internal manufacturing footprint and, generally, reduce operating costs. The restructuring expenses are primarily comprised of direct and incremental costs related to headcount reductions including severance and outplacement fees for the terminated employees, as well as facility close costs.

The following is a summary of the costs incurred and remaining balances included in accrued expenses for the six months ended April 1, 2016 (in thousands):


Balance as of October 2, 2015	$	943
Current period adjustments		1,008
Payments		(770	)

Balance as of April 1, 2016	$	1,181

The restructuring expenses recorded to date are expected to be paid through the remainder of fiscal year 2016. Our restructuring charges incurred to date are primarily employee related with non-employee related charges determined to be immaterial. We expect to incur additional restructuring costs in the range of approximately $4.0 million to $6.0 million during the remainder of calendar year 2016 as we complete restructuring actions primarily associated with the Metelics Acquisition.

Share - Based Compensation

6 Months Ended

Apr. 01, 2016

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

Share - Based Compensation

14. SHARE-BASED COMPENSATION

Stock Plans

As of April 1, 2016, we had 8.2 million shares available for future issuance under our 2012 Omnibus Incentive Plan (as Amended and Restated) (the “2012 Plan”). Under the 2012 Plan, we have the ability to issue incentive stock options (ISOs), non-statutory stock options (NSOs), performance-based non-statutory stock options, stock appreciation rights, restricted stock (RSAs), restricted stock units (RSUs), performance-based stock units (PRSUs), performance shares, and other equity-based awards to employees, directors and outside consultants. Options granted to date primarily vest over a four-year period with 25% vesting at the end of one year and the remaining vesting monthly thereafter, and generally have a term of up to 10 years. Certain of the share-based awards granted and outstanding as of April 1, 2016 are subject to accelerated vesting upon a changes in control. The financial impact of any modifications to share-based awards during the periods presented was not material. As of April 1, 2016, total unrecognized compensation cost related to the employee stock purchase plan was not material.

Share-Based Compensation

The following table shows a summary of share-based compensation expense included in the Condensed Consolidated Statement of Operations for the three and six months ended April 3, 2015 and April 1, 2016 (in thousands):


	Three Months Ended				Six Months Ended
	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
Cost of revenue	$	493	$	549	$	950	$	895
Research and development		1,671		1,165		3,508		2,127
Selling, general and administrative		3,680		4,255		8,768		6,106

Total stock-based compensation expense	$	5,844	$	5,969	$	13,226	$	9,128

As of April 1, 2016, the total unrecognized compensation costs related to outstanding stock options and RSUs expected to vest was $52.5 million, which we expect to recognize over a weighted-average period of 4.2 years.

Stock Options

We had 1.1 million stock options outstanding as of April 1, 2016, with a weighted-average exercise price per share of $22.69 and weighted-average remaining contractual term of 6.2 years. The aggregate intrinsic value of the stock options outstanding as of April 1, 2016 was $23.8 million which represents our closing stock price value on the last trading day of the period in excess of the weighted-average exercise price multiplied by the number of options outstanding.

During the six months ended April 1, 2016, we granted 300,000 performance-based non-qualified stock options with a grant date fair value of $3.5 million that are subject to vesting only upon the market price of the Company’s underlying public stock closing above a certain price target within seven years of the date of grant. Due to the market condition upon which vesting is based, the fair value of the awards was estimated using a Monte Carlo simulation model. Compensation cost is recognized regardless of the number of awards that are earned based on the market condition. Compensation cost is recognized on a straight-line basis over the estimated service period of approximately three years. In the event that the Company’s common stock achieves the target price of $64.22 per share based on a 30 day trailing average prior to the end of the estimated service period, any remaining unamortized compensation cost will be recognized.

The total intrinsic value of options at the time of exercise was $0.8 million and $2.7 million for the three and six months ended April 1, 2016 and was $3.2 million and $4.0 million for the three and six months ended April 3, 2015.

Restricted Stock, Restricted Stock Units and Performance-Based Restricted Stock Units

A summary of restricted stock, restricted stock unit and performance-based restricted stock unit activity for the six months ended April 1, 2016, is as follows (in thousands):


	Number of Shares			Weighted- Average Grate Date Fair Value		Aggregate Intrinsic Value
Balance at October 2, 2015		1,692		$	25.30	$	48,375
Granted		624		$	40.72
Vested and released		(454	)	$	23.52
Forfeited, canceled or expired		(23	)	$	26.95

Balance at April 1, 2016		1,839		$	30.95	$	81,876

Restricted stock, restricted stock units and performance-based restricted stock units that vested during the six months ended April 1, 2016 and April 3, 2015 had fair value of $15.7 million and $13.1 million as of the vesting date, respectively.

Income Taxes	6 Months Ended
Income Taxes	Apr. 01, 2016
Income Tax Disclosure [Abstract]
Income Taxes	15. INCOME TAXES We are subject to income tax in the United States as well as other tax jurisdictions in which we conduct business. Earnings from non-U.S. activities are subject to local country income tax and may also be subject to current U.S. income tax. For interim periods, we record a tax provision or benefit based upon the estimated effective tax rate expected for the full fiscal year, adjusted for material discrete taxation matters arising during the interim periods. The difference between the U.S. federal statutory income tax rate of 35% and our effective income tax rates for the three and six months ended April 1, 2016 and April 3, 2015, was primarily impacted in all periods by changes in fair values of the common stock warrant liability which is neither deductible nor taxable for tax purposes, income taxed in foreign jurisdictions at generally lower tax rates, non-deductible compensation, research and development tax credits and non-deductible merger expenses, offset by U.S. state income taxes. The balance of the unrecognized tax benefit for the three and six months ending April 1, 2016 did not change and remained at $1.7 million. The unrecognized tax benefits primarily relate to positions taken by us in our 2014 US tax filings. The entire balance of unrecognized tax benefits, if recognized, will reduce income tax expense. It is our policy to recognize any interest and penalties accrued related to unrecognized tax benefits in income tax expense. During the quarter ending April 1, 2016, we did not make any payment of interest and penalties. As disclosed in Note 2 - Acquisitions, our purchase accounting for the FiBest Acquisition, including income taxes, is preliminary and subject to revision upon obtaining and analyzing additional information. At the closing of the FiBest Acquisition, we recorded, on a preliminary basis, a deferred income tax asset relating to net operating loss (NOL) carryforwards of approximately $2.6 million. The aggregate net deferred income tax liability acquired in the FiBest Acquisition is estimated to be $12.9 million which includes the net deferred income tax asset of $2.6 million relating to NOL carryforwards and a net deferred income tax liability of $15.5 million related to the difference between the book and tax basis of the intangible and other assets acquired. We do not anticipate the recording of any deferred taxes associated with the Metelics Acquisition due to a Section 338(h) (10) election which will permit us to have tax basis equal to the purchase price.

Related Party Transactions	6 Months Ended
Related Party Transactions	Apr. 01, 2016
Related Party Transactions [Abstract]
Related Party Transactions	16. RELATED PARTY TRANSACTIONS GaAs Labs, a former stockholder and an affiliate of directors John and Susan Ocampo, continues to engage us to provide administrative and business development services to GaAs Labs on a time and materials basis. There are no minimum service requirements or payment obligations and the agreement may be terminated by either party with 30 days notice. In the three and six months ended April 1, 2016, we recorded charges to GaAs Labs of less than $0.1 million for services provided pursuant to this agreement and have recorded these amounts as other income in the accompanying condensed consolidated statements of operations. All of this amount was recorded in the first quarter of fiscal year 2016. In the three and six months ended April 1, 2016, and April 3, 2015 we recorded revenue of less than $0.1 million associated with product sales from sales of product to a privately-held company with a common director.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References + Details

Supplemental Cash Flow Information

6 Months Ended

Apr. 01, 2016

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

17. SUPPLEMENTAL CASH FLOW INFORMATION

As of April 1, 2016 and April 3, 2015, we had $0.7 million and $0.7 million in unpaid amounts related to purchases of property and equipment and intangibles included in accounts payable and accrued liabilities during each period, respectively. These amounts have been excluded from the payments for purchases of property and equipment in the accompanying condensed consolidated statements of cash flows until paid.

The following is supplemental cash flow information regarding non-cash investing and financing activities (in thousands):


	Six Months Ended
	April 1, 2016		April 3, 2015
Cash paid for interest	$	8,229	$	7,574
Cash paid for income taxes	$	722	$	794

Geographic and Significant Customer Information

6 Months Ended

Apr. 01, 2016

Segment Reporting [Abstract]

Geographic and Significant Customer Information

18. GEOGRAPHIC AND SIGNIFICANT CUSTOMER INFORMATION

We have one reportable operating segment that designs, develops, manufactures and markets semiconductors and modules. The determination of the number of reportable operating segments is based on the chief operating decision maker’s use of financial information for the purposes of assessing performance and making operating decisions. In evaluating financial performance and making operating decisions, the chief operating decision maker primarily uses consolidated revenue, gross profit and operating income (loss).

Information about our operations in different geographic regions, based upon customer locations, is presented below (in thousands):


	Three Months Ended				Six Months Ended
Revenue by Geographic Region	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
United States	$	36,502	$	36,336	$	70,984	$	82,185
Asia Pacific (1)		87,009		57,901		159,464		99,952
Other Countries (2)		10,068		8,194		18,905		16,850

Total	$	133,579	$	102,431	$	249,353	$	198,987


	As of
Long-Lived Assets by Geographic Region	April 1, 2016		October 2, 2015
United States	$	83,553	$	72,617
Asia Pacific (1)		13,167		8,740
Other Countries (2)		2,917		2,402

Total	$	99,637	$	83,759

(1)	Asia Pacific represents China, Taiwan, Hong Kong, Japan, Singapore, India, Thailand, Korea, Australia, Malaysia and the Philippines.

(2)	No international country or region represented greater than 10% of the total net long-lived assets as of the dates presented, other than the Asia-Pacific region as presented above.

The following is a summary of customer concentrations as a percentage of revenue and accounts receivable as of and for the periods presented:


	Three Months Ended						Six Months Ended
Revenue	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Customer A		17	%		5	%		16	%		6	%
Customer B		12	%		13	%		12	%		13	%
Customer C		11	%		19	%		12	%		21	%
Customer D		10	%		2	%		10	%		1	%


	As of
Accounts Receivable	April 1, 2016			October 2, 2015
Customer A		13	%		14	%
Customer B		16	%		10	%
Customer C		14	%		22	%

No other customer represented more than 10% of revenue or accounts receivable in the periods presented in the accompanying consolidated financial statements. For the three and six months ended April 1, 2016, our top ten customers represented 66% and 64% and for the three and six months ended April 3, 2015, our top ten customers represented 59% and 58% of total revenue, respectively.

- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Apr. 01, 2016

Accounting Policies [Abstract]

Immaterial Restatement


	Six Months Ended
	As reported			Adjustment			As adjusted
Net cash provided by operating activities	$	16,018		$	(14,586	)	$	1,432
Net cash used in investing activities	$	(238,828	)	$	14,586		$	(224,242	)

Principles of Consolidation

Use of Estimates

Recent Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

6 Months Ended

Apr. 01, 2016

Accounting Policies [Abstract]

Restated Statement of Cash Flows

For the six months ended April 3, 2015 the effect of this restatement is outlined below:


	Six Months Ended
	As reported			Adjustment			As adjusted
Net cash provided by operating activities	$	16,018		$	(14,586	)	$	1,432
Net cash used in investing activities	$	(238,828	)	$	14,586		$	(224,242	)

Acquisitions (Tables)

6 Months Ended

Apr. 01, 2016

FiBest Limited [Member]

Schedule of Aggregate Purchase Price Allocated to Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed

The preliminary allocation of purchase price as of April 1, 2016, is as follows (in thousands):


	Six Months Ended April 1, 2016
	Preliminary Allocation
Current assets	$	10,850
Intangible assets		45,650
Other assets		3,334

Total assets acquired		59,834

Liabilities assumed:
Debt		11,627
Deferred income taxes		12,932
Other liabilities		3,968

Total liabilities assumed		28,527

Net assets acquired		31,307

Consideration:
Cash paid upon closing, net of cash acquired		47,517

Goodwill	$	16,210

Components of Acquired Intangible Assets on a Preliminary Basis

The components of the acquired intangible assets on a preliminary basis were as follows (in thousands):


	Amount		Useful Lives (Years)
Developed technology	$	9,400	7
Customer relationships		36,250	10

	$	45,650

Summary of Revenue and Earnings


	Three Months Ended			Six Months Ended
Revenue	$	8,435		$	11,105
Loss before income taxes		(1,747	)		(2,558	)

Summary of Unaudited Supplemental Pro Forma Data

This pro forma data is presented for informational purposes only and does not purport to be indicative of our future results of operations.


	Three Months Ended						Six Months Ended
	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Revenue	$	133,579		$	109,763		$	256,979		$	213,651
Net loss		(11,531	)		(8,798	)		(26,785	)		(19,115	)

Aeroflex/Metelics Inc [Member]

Schedule of Aggregate Purchase Price Allocated to Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed

The adjusted allocation of purchase price as of April 1, 2016, is as follows (in thousands):


	Preliminary Allocation		Allocation Adjustments			Adjusted Allocation
Current assets	$	15,250	$	(1,835	)		13,415
Intangible assets		19,700		—			19,700
Other assets		6,249		—			6,249

Total assets acquired		41,199		(1,835	)		39,364

Liabilities assumed:
Other liabilities		7,401		—			7,401

Total liabilities assumed		7,401		—			7,401

Net assets acquired		33,798		(1,835	)		31,963

Consideration:
Cash paid upon closing, net of cash acquired		38,000		—			38,000

Goodwill	$	4,202	$	1,835		$	6,037

Components of Acquired Intangible Assets on a Preliminary Basis

The components of the acquired intangible assets on a preliminary basis were as follows (in thousands):


	Amount		Useful Lives (Years)
Developed technology	$	1,000	7
Customer relationships		18,700	10

	$	19,700

Summary of Revenue and Earnings


	Three Months Ended			Six Months Ended
Revenue	$	10,345		$	12,252
Loss before income taxes		(220	)		(174	)

Summary of Unaudited Supplemental Pro Forma Data

This pro forma data is presented for informational purposes only and does not purport to be indicative of our future results of operations.


	Three Months Ended						Six Months Ended
	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Revenue	$	133,579		$	112,009		$	258,189		$	219,392
Net loss		(10,119	)		(7,995	)		(25,703	)		(15,748	)

BinOptics Corporation [Member]

Schedule of Aggregate Purchase Price Allocated to Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed

The final allocation of purchase price as of January 1, 2016, is as follows (in thousands):


	October 2, 2015 Allocation		Allocation Adjustments			January 1, 2016 Adjusted Allocation

Current assets	$	23,674	$	(1,100	)	$	22,574
Intangible assets		136,900		400			137,300
Other assets		9,194		—			9,194

Total assets acquired		169,768		(700	)		169,068

Liabilities assumed:
Debt		2,535		—			2,535
Deferred income taxes		33,345		99			33,444
Other liabilities		13,106		—			13,106

Total liabilities assumed		48,986		99			49,085

Net assets acquired		120,782		(799	)		119,983

Consideration:
Cash paid upon closing, net of cash acquired		208,352		—			208,352

Goodwill	$	87,570	$	799		$	88,369

Components of Acquired Intangible Assets on a Preliminary Basis

The components of the acquired intangible assets were as follows (in thousands):


	Amount		Useful Lives (Years)
Developed technology	$	17,500	7
Customer relationships		119,800	10

	$	137,300

Summary of Unaudited Supplemental Pro Forma Data

This pro forma data is presented as of April 3, 2015 for informational purposes only and does not purport to be indicative of our future results of operations.


	Three Months Ended			Six Months Ended
	April 3, 2015			April 3, 2015
Revenue	$	104,387		$	237,966
Net loss		(11,387	)		(14,750	)

Discontinued Operations (Tables)

6 Months Ended

Apr. 01, 2016

Discontinued Operations and Disposal Groups [Abstract]

Summary of Operating Results Through Dates of Divestiture Related to Divested Businesses

The accompanying consolidated statement of operations includes the following operating results related to this divested business (in thousands):


	Three Months Ended					Six Months Ended
	April 1, 2016		April 3, 2015			April 1, 2016		April 3, 2015
Revenue	$	—	$	22,454		$	—	$	40,762
Cost of revenue		—		15,161			—		26,687

Gross profit		—		7,293			—		14,075
Operating expenses:
Research and development		—		622			—		1,314
Selling, general and administrative		—		980			—		1,351
Restructuring charges		—		—			—		—

Total operating expenses		—		1,602			—		2,665

Income from discontinued operations		—		5,691			—		11,410
Other income		1,875		—			3,750		—
Gain on sale		308		—			308		—

Income before income taxes		2,183		5,691			4,058		11,410
Income tax provision		787		2,052			1,463		4,113

Income from discontinued operations	$	1,396	$	3,639		$	2,595	$	7,297


Above includes depreciation & amortization of	$	—	$	57		$	—	$	123
Cashflow from Operating Activities		—		2,227			—		3,744
Cashflow from Investing Activities		3,750		(250	)		3,750	$	(250	)

Investments (Tables)

6 Months Ended

Apr. 01, 2016

Investments, Debt and Equity Securities [Abstract]

Summary of Available for Sale Investments

The amortized cost, gross unrealized holding gains or losses, and fair value of our available-for-sale investments by major investments type, as of April 1, 2016, are summarized in the tables below (in thousands):


	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Aggregate Fair Value

Corporate bonds	$	14,676	$	—	$	(72	)	$	14,604
Agency bonds		9,035		—		(7	)		9,028

Total investments	$	23,711	$	—	$	(79	)	$	23,632


	October 2, 2015		Net Realized/Unrealized Losses			Purchases and Issuances		Sales and Settlements			April 1, 2016
Corporate bonds	$	24,462	$	(257	)	$	7,696	$	(17,297	)	$	14,604
Agency bonds		15,095		(72	)		—		(5,995	)		9,028

Total investments	$	39,557	$	(329	)	$	7,696	$	(23,292	)	$	23,632

Summary of Contractual Maturities of Investments

The contractual maturities of available-for-sale investments were as follows (in thousands):


	April 1, 2016		October 2, 2015
Less than 1 year	$	10,831	$	16,259
Over 1 year		12,801		23,298

Total investments	$	23,632	$	39,557

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Fair Value (Tables)

6 Months Ended

Apr. 01, 2016

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis consist of the following (in thousands):


	April 1, 2016
	Fair Value		Active Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets
Money market funds	$	2,117	$	2,117	$	—	$	—
Agency bonds		9,028		—		9,028		—
Corporate bonds		14,604		—		14,604		—

Total assets measured at fair value	$	25,749	$	2,117	$	23,632	$	—

Liabilities
Contingent consideration	$	796	$	—	$	—	$	796
Common stock warrant liability		40,901		—		—		40,901

Total liabilities measured at fair value	$	41,697	$	—	$	—	$	41,697


	October 2, 2015
	Fair Value		Active Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets
Money market funds	$	15,000	$	15,000	$	—	$	—
US treasuries and agency bonds		15,095		—		15,095		—
Corporate bonds		24,462		—		24,462		—

Total assets measured at fair value	$	54,557	$	15,000	$	39,557	$	—

Liabilities
Contingent consideration	$	1,150	$	—	$	—	$	1,150
Common stock warrant liability		21,822		—		—		21,822

Total liabilities measured at fair value	$	22,972	$	—	$	—	$	22,972

Changes in Liabilities with Inputs Classified within Level 3 of Fair Value

The changes in assets and liabilities with inputs classified within Level 3 of the fair value hierarchy consist of the following (in thousands):


	October 2, 2015		Net Realized/Unrealized Losses Included in Earnings		Purchases and Issuances		Sales and Settlements			Transfers in and/or (out) of Level 3		April 1, 2016
Contingent consideration	$	1,150	$	46	$	—	$	(400	)	$	—	$	796

Common stock warrant liability	$	21,822	$	19,079	$	—	$	—		$	—	$	40,901


	October 3, 2014		Net Realized/Unrealized Losses Included in Earnings		Purchases and Issuances		Sales and Settlements		Transfers in and/or (out) of Level 3		April 3, 2015
Trading Securities	$	250	$	—	$	250	$	—	$	—	$	500

Contingent consideration	$	820	$	—	$	—	$	—	$	—	$	820

Common stock warrant liability	$	15,801	$	16,217	$	—	$	—	$	—	$	32,018

Changes in Assets with Inputs Classified within Level 3 of Fair Value

The changes in assets and liabilities with inputs classified within Level 3 of the fair value hierarchy consist of the following (in thousands):


	October 2, 2015		Net Realized/Unrealized Losses Included in Earnings		Purchases and Issuances		Sales and Settlements			Transfers in and/or (out) of Level 3		April 1, 2016
Contingent consideration	$	1,150	$	46	$	—	$	(400	)	$	—	$	796

Common stock warrant liability	$	21,822	$	19,079	$	—	$	—		$	—	$	40,901


	October 3, 2014		Net Realized/Unrealized Losses Included in Earnings		Purchases and Issuances		Sales and Settlements		Transfers in and/or (out) of Level 3		April 3, 2015
Trading Securities	$	250	$	—	$	250	$	—	$	—	$	500

Contingent consideration	$	820	$	—	$	—	$	—	$	—	$	820

Common stock warrant liability	$	15,801	$	16,217	$	—	$	—	$	—	$	32,018

Inventories (Tables)

6 Months Ended

Apr. 01, 2016

Inventory Disclosure [Abstract]

Components of Inventories

Inventories consist of the following (in thousands):


	April 1, 2016		October 2, 2015
Raw materials	$	59,173	$	44,329
Work-in-process		11,104		3,086
Finished goods		36,695		32,528

Total	$	106,972	$	79,943

Property, Plant and Equipment (Tables)

6 Months Ended

Apr. 01, 2016

Property, Plant and Equipment [Abstract]

Components of Property, Plant and Equipment

Property, plant and equipment consists of the following (in thousands):


	April 1, 2016			October 2, 2015
Land, buildings and improvements	$	12,559		$	10,981
Construction in process		20,092			25,898
Machinery and equipment		109,755			89,852
Leasehold improvements		12,779			9,161
Furniture and fixtures		1,809			983
Computer equipment and software		11,586			9,307

Total property and equipment		168,580			146,182
Less accumulated depreciation and amortization		(68,943	)		(62,423	)

Property and equipment, net	$	99,637		$	83,759

Debt (Tables)

6 Months Ended

Apr. 01, 2016

Debt Disclosure [Abstract]

Schedule of Remained Outstanding on Term Loans

As of April 1, 2016, the following remained outstanding on the Term Loans (in thousands):


Principal balance	$	343,875
Unamortized discount		(1,906	)

Total Term Loans		341,969
Current portion		3,500

Long-term, less current portion	$	338,469

Schedule of Minimum Principal Payments under Term Loans

As of April 1, 2016, the minimum principal payments under the Term Loans in future fiscal years was as follows (in thousands):


2016 (rest of fiscal year)	$	1,750
2017		3,500
2018		3,500
2019		3,500
2020		3,500
Thereafter		328,125

Total	$	343,875

Intangible Assets (Tables)

6 Months Ended

Apr. 01, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Amortization Expense of Intangible Assets

Amortization expense related to intangible assets is as follows (in thousands):


	Three Months Ended				Six Months Ended
	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
Cost of revenue	$	6,642	$	7,347	$	13,809	$	12,706
Selling, general and administrative		6,304		3,096		10,727		4,149

Total	$	12,946	$	10,443	$	24,536	$	16,855

Summary of Intangible Assets

Intangible assets consist of the following (in thousands):


	April 1, 2016			October 2, 2015
Acquired technology	$	164,365		$	162,536
Customer relationships		202,646			144,070
In-process research and development		8,000			8,000
Trade name		3,400			3,400

Total		378,411			318,006
Less accumulated amortization		(98,876	)		(74,340	)

Intangible assets — net	$	279,535		$	243,666

Summary of Activity in Intangible Assets and Goodwill

A summary of the activity in intangible assets and goodwill follows (in thousands):


	Total			Acquired Technology			Customer Relationships		In-Process Research and Development		Trade Name		Goodwill
Balance at October 2, 2015	$	411,352		$	162,536		$	144,070	$	8,000	$	3,400	$	93,346
Acquired		88,796			10,400			55,350		—		—		23,046
Currency translation adjustment		5,505			836			3,226		—		—		1,443
Other intangibles purchased		681			681			—		—		—		—
Impairments of intangible assets		(10,088	)		(10,088	)		—		—		—		—

Balance at April 1, 2016	$	496,246		$	164,365		$	202,646	$	8,000	$	3,400	$	117,835

Summary of Estimated Amortization of Intangible Assets in Future Fiscal Years


	2016 Remaining		2017		2018		2019		2020		Thereafter		Total
Amortization expense	$	25,124		50,312		46,911		40,383		32,604		72,802	$	268,136

Stockholders' Equity (Tables)

6 Months Ended

Apr. 01, 2016

Equity [Abstract]

Summary of Activity of Warrant Liability

The following is a summary of the activity of the warrant liability (in thousands):


Balance-October 2, 2015	$	21,822
Change in estimated fair value		19,079

Balance-April 1, 2016	$	40,901

Earnings (Loss) Per Share (Tables)

6 Months Ended

Apr. 01, 2016

Earnings Per Share [Abstract]

Computation for Basic and Diluted Net Loss Per Share of Common Stock

The following table sets forth the computation for basic and diluted net loss per share of common stock (in thousands, except per share data):


	Three Months Ended						Six Months Ended
	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Numerator:
Loss from continuing operations	$	(12,045	)	$	(11,176	)	$	(28,815	)	$	(21,140	)
Income from discontinued operations		1,396			3,639			2,595			7,297

Net loss	$	(10,649	)	$	(7,537	)	$	(26,220	)	$	(13,843	)

Warrant liability gain		—			—			—			—

Net loss attributable to common stockholders	$	(10,649	)	$	(7,537	)	$	(26,220	)	$	(13,843	)

Denominator:
Weighted average common shares outstanding-basic		53,228			50,593			53,122			49,100
Dilutive effect of options and warrants		—			—			—			—

Weighted average common shares outstanding-diluted		53,228			50,593			53,122			49,100

Common stock (loss) earnings per share-basic:
Continuing operations	$	(0.23	)	$	(0.22	)	$	(0.54	)	$	(0.43	)
Discontinued operations		0.03			0.07			0.05			0.15

Net common stock loss per share-basic	$	(0.20	)	$	(0.15	)	$	(0.49	)	$	(0.28	)

Common stock (loss) earnings per share-diluted:
Continuing operations	$	(0.23	)	$	(0.22	)	$	(0.54	)	$	(0.43	)
Discontinued operations		0.03			0.07			0.05			0.15

Net common stock loss per share-diluted	$	(0.20	)	$	(0.15	)	$	(0.49	)	$	(0.28	)

Common Equivalent Shares Excluded from Calculation from Net Income Per Share

The following common equivalent shares were excluded from the calculation from net income per share as their inclusion would have been antidilutive (in thousands):


	Three Months Ended				Six Months Ended
	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
Restricted stock units and awards		935		721		900		704
Stock options		381		441		384		666
Warrants		823		746		797		444

Total common stock equivalent shares excluded		2,139		1,908		2,081		1,815

Restructurings (Tables)

6 Months Ended

Apr. 01, 2016

Restructuring and Related Activities [Abstract]

Summary of Costs Incurred and Remaining Balances Included in Accrued Expenses

The following is a summary of the costs incurred and remaining balances included in accrued expenses for the six months ended April 1, 2016 (in thousands):


Balance as of October 2, 2015	$	943
Current period adjustments		1,008
Payments		(770	)

Balance as of April 1, 2016	$	1,181

Share - Based Compensation (Tables)

6 Months Ended

Apr. 01, 2016

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

Effects of Stock-Based Compensation Expense Related to Stock-Based Awards to Employees and Nonemployees


	Three Months Ended				Six Months Ended
	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
Cost of revenue	$	493	$	549	$	950	$	895
Research and development		1,671		1,165		3,508		2,127
Selling, general and administrative		3,680		4,255		8,768		6,106

Total stock-based compensation expense	$	5,844	$	5,969	$	13,226	$	9,128

Summary of Restricted Stock, Restricted Stock Unit and Performance-based Restricted Stock Unit Activity

A summary of restricted stock, restricted stock unit and performance-based restricted stock unit activity for the six months ended April 1, 2016, is as follows (in thousands):


	Number of Shares			Weighted- Average Grate Date Fair Value		Aggregate Intrinsic Value
Balance at October 2, 2015		1,692		$	25.30	$	48,375
Granted		624		$	40.72
Vested and released		(454	)	$	23.52
Forfeited, canceled or expired		(23	)	$	26.95

Balance at April 1, 2016		1,839		$	30.95	$	81,876

Supplemental Cash Flow Information (Tables)

6 Months Ended

Apr. 01, 2016

Supplemental Cash Flow Elements [Abstract]

Schedule of Supplemental Cash Flow Information Regarding Non-cash Investing and Financing Activities

The following is supplemental cash flow information regarding non-cash investing and financing activities (in thousands):


	Six Months Ended
	April 1, 2016		April 3, 2015
Cash paid for interest	$	8,229	$	7,574
Cash paid for income taxes	$	722	$	794

Geographic and Significant Customer Information (Tables)

6 Months Ended

Apr. 01, 2016

Segment Reporting [Abstract]

Summary of Different Geographic Regions

Information about our operations in different geographic regions, based upon customer locations, is presented below (in thousands):


	Three Months Ended				Six Months Ended
Revenue by Geographic Region	April 1, 2016		April 3, 2015		April 1, 2016		April 3, 2015
United States	$	36,502	$	36,336	$	70,984	$	82,185
Asia Pacific (1)		87,009		57,901		159,464		99,952
Other Countries (2)		10,068		8,194		18,905		16,850

Total	$	133,579	$	102,431	$	249,353	$	198,987


	As of
Long-Lived Assets by Geographic Region	April 1, 2016		October 2, 2015
United States	$	83,553	$	72,617
Asia Pacific (1)		13,167		8,740
Other Countries (2)		2,917		2,402

Total	$	99,637	$	83,759

(1)	Asia Pacific represents China, Taiwan, Hong Kong, Japan, Singapore, India, Thailand, Korea, Australia, Malaysia and the Philippines.

(2)	No international country or region represented greater than 10% of the total net long-lived assets as of the dates presented, other than the Asia-Pacific region as presented above.

Summary of Customer Concentrations as Percentage of Revenue and Accounts Receivable

The following is a summary of customer concentrations as a percentage of revenue and accounts receivable as of and for the periods presented:


	Three Months Ended						Six Months Ended
Revenue	April 1, 2016			April 3, 2015			April 1, 2016			April 3, 2015
Customer A		17	%		5	%		16	%		6	%
Customer B		12	%		13	%		12	%		13	%
Customer C		11	%		19	%		12	%		21	%
Customer D		10	%		2	%		10	%		1	%


	As of
Accounts Receivable	April 1, 2016			October 2, 2015
Customer A		13	%		14	%
Customer B		16	%		10	%
Customer C		14	%		22	%

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 01, 2016 USD ($)	Apr. 01, 2016 USD ($) Segment	Apr. 03, 2015 USD ($)
Description Of Business And Basis Of Presentation [Line Items]
Number of reportable operating segment \| Segment		1
Reporting period description		We have a 52 or 53-week fiscal year ending on the Friday closest to the last day of September. The fiscal years 2016 and 2015 include 52 weeks. To offset the effect of holidays, for fiscal years in which there are 53 weeks, we include the extra week arising in our fiscal years in the first quarter.
Unamortized deferred finance costs	$ 6.3	$ 6.3
Amount of deferred tax assets reclassified from current to non-current	$ 31.4
Retention Escrow Agreement [Member]
Description Of Business And Basis Of Presentation [Line Items]
Aggregate consideration payable			$ 14.6

Summary of Significant Accounting Policies - Restated Statement of Cash Flows (Detail) - USD ($) $ in Thousands	6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Net cash provided by operating activities	$ 35,098	$ 1,432
Net cash used in investing activities	$ (83,909)	(224,242)
Allocation [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Net cash provided by operating activities		16,018
Net cash used in investing activities		(238,828)
Allocation Adjustments [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Net cash provided by operating activities		(14,586)
Net cash used in investing activities		$ 14,586

Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended	6 Months Ended
	Dec. 09, 2015	Dec. 15, 2014	Apr. 01, 2016	Apr. 01, 2016	Apr. 03, 2015	Jan. 01, 2016
FiBest Limited [Member]
Business Acquisition [Line Items]
Date of acquisition				Dec. 09, 2015
Aggregate consideration payable	$ 59,100
Business acquisition cost of acquired entity, cash paid	47,500
Debt assumed on acquisition	$ 11,600		$ 11,627	$ 11,627
Weighted-average life of identified intangible assets acquired				9 years 4 months 24 days
FiBest Limited [Member] \| Selling, General and Administrative [Member]
Business Acquisition [Line Items]
Business combination acquisition related costs			100	$ 2,700
Aeroflex/Metelics Inc [Member]
Business Acquisition [Line Items]
Date of acquisition				Dec. 14, 2015
Business acquisition cost of acquired entity, cash paid				$ 38,000
Weighted-average life of identified intangible assets acquired				9 years 9 months 18 days
Adjustment to inventory resulting in reduced current assets acquired			$ 1,800
Aeroflex/Metelics Inc [Member] \| Selling, General and Administrative [Member]
Business Acquisition [Line Items]
Business combination acquisition related costs				$ 500
BinOptics Corporation [Member]
Business Acquisition [Line Items]
Date of acquisition				Dec. 15, 2014
Aggregate consideration payable		$ 208,400
Debt assumed on acquisition						$ 2,535
Weighted-average life of identified intangible assets acquired				9 years 7 months 6 days
Business combination cash on hand and incurrence of additional borrowing		100,000
BinOptics Corporation [Member] \| Selling, General and Administrative [Member]
Business Acquisition [Line Items]
Business combination acquisition related costs					$ 4,100
Retention Escrow Agreement [Member]
Business Acquisition [Line Items]
Aggregate consideration payable					$ 14,600
Retention Escrow Agreement [Member] \| BinOptics Corporation [Member]
Business Acquisition [Line Items]
Aggregate consideration payable		$ 14,600

Acquisitions - Schedule of Aggregate Purchase Price Allocated to Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jan. 01, 2016	Apr. 01, 2016	Apr. 03, 2015	Dec. 09, 2015	Oct. 02, 2015
Consideration:
Cash paid upon closing, net of cash acquired		$ 85,516	$ 208,369
Goodwill		117,835			$ 93,346
BinOptics Corporation [Member]
Business Acquisition [Line Items]
Current assets	$ 22,574
Intangible assets	137,300
Other assets	9,194
Total assets acquired	169,068
Liabilities assumed:
Debt	2,535
Deferred income taxes	33,444
Other liabilities	13,106
Total liabilities assumed	49,085
Net assets acquired	119,983
Consideration:
Cash paid upon closing, net of cash acquired	208,352
Goodwill	88,369
BinOptics Corporation [Member] \| Allocation [Member]
Business Acquisition [Line Items]
Current assets	23,674
Intangible assets	136,900
Other assets	9,194
Total assets acquired	169,768
Liabilities assumed:
Debt	2,535
Deferred income taxes	33,345
Other liabilities	13,106
Total liabilities assumed	48,986
Net assets acquired	120,782
Consideration:
Cash paid upon closing, net of cash acquired	208,352
Goodwill	87,570
BinOptics Corporation [Member] \| Allocation Adjustments [Member]
Business Acquisition [Line Items]
Current assets	(1,100)
Intangible assets	400
Total assets acquired	(700)
Liabilities assumed:
Deferred income taxes	99
Total liabilities assumed	99
Net assets acquired	(799)
Consideration:
Goodwill	$ 799
Aeroflex/Metelics Inc [Member]
Business Acquisition [Line Items]
Current assets		13,415
Intangible assets		19,700
Other assets		6,249
Total assets acquired		39,364
Liabilities assumed:
Other liabilities		7,401
Total liabilities assumed		7,401
Net assets acquired		31,963
Consideration:
Cash paid upon closing, net of cash acquired		38,000
Goodwill		6,037
Aeroflex/Metelics Inc [Member] \| Allocation [Member]
Business Acquisition [Line Items]
Current assets		15,250
Intangible assets		19,700
Other assets		6,249
Total assets acquired		41,199
Liabilities assumed:
Other liabilities		7,401
Total liabilities assumed		7,401
Net assets acquired		33,798
Consideration:
Cash paid upon closing, net of cash acquired		38,000
Goodwill		4,202
Aeroflex/Metelics Inc [Member] \| Allocation Adjustments [Member]
Business Acquisition [Line Items]
Current assets		(1,835)
Total assets acquired		(1,835)
Liabilities assumed:
Net assets acquired		(1,835)
Consideration:
Goodwill		1,835
FiBest Limited [Member]
Business Acquisition [Line Items]
Current assets		10,850
Intangible assets		45,650
Other assets		3,334
Total assets acquired		59,834
Liabilities assumed:
Debt		11,627		$ 11,600
Deferred income taxes		12,932
Other liabilities		3,968
Total liabilities assumed		28,527
Net assets acquired		31,307
Consideration:
Cash paid upon closing, net of cash acquired		47,517
Goodwill		$ 16,210

Acquisitions - Components of Acquired Intangible Assets on a Preliminary Basis (Detail) $ in Thousands	6 Months Ended
	Apr. 01, 2016 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 88,796
FiBest Limited [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	45,650
Aeroflex/Metelics Inc [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	19,700
BinOptics Corporation [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	137,300
Developed Technology [Member] \| FiBest Limited [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 9,400
Acquired intangible assets, Useful Lives	7 years
Developed Technology [Member] \| Aeroflex/Metelics Inc [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 1,000
Acquired intangible assets, Useful Lives	7 years
Developed Technology [Member] \| BinOptics Corporation [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 17,500
Acquired intangible assets, Useful Lives	7 years
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 55,350
Customer Relationships [Member] \| FiBest Limited [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 36,250
Acquired intangible assets, Useful Lives	10 years
Customer Relationships [Member] \| Aeroflex/Metelics Inc [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 18,700
Acquired intangible assets, Useful Lives	10 years
Customer Relationships [Member] \| BinOptics Corporation [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 119,800
Acquired intangible assets, Useful Lives	10 years

Acquisitions - Summary of Revenue and Earnings (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 01, 2016	Apr. 01, 2016
FiBest Limited [Member]
Business Acquisition [Line Items]
Revenue	$ 8,435	$ 11,105
Loss before income taxes	(1,747)	(2,558)
Aeroflex/Metelics Inc [Member]
Business Acquisition [Line Items]
Revenue	10,345	12,252
Loss before income taxes	$ (220)	$ (174)

Acquisitions - Summary of Unaudited Supplemental Pro Forma Data (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
BinOptics Corporation [Member]
Business Acquisition [Line Items]
Revenue		$ 104,387		$ 237,966
Net loss		(11,387)		(14,750)
FiBest Limited [Member]
Business Acquisition [Line Items]
Revenue	$ 133,579	109,763	$ 256,979	213,651
Net loss	(11,531)	(8,798)	(26,785)	(19,115)
Aeroflex/Metelics Inc [Member]
Business Acquisition [Line Items]
Revenue	133,579	112,009	258,189	219,392
Net loss	$ (10,119)	$ (7,995)	$ (25,703)	$ (15,748)

Discontinued Operations - Additional information (Detail) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Aug. 31, 2015	Apr. 01, 2016	Apr. 01, 2016	Oct. 02, 2015	Aug. 17, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other income		$ 1,875,000	$ 3,750,000
Gain on sale		$ 308,000	$ 308,000
Automotive Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration on sale of business	$ 82,100,000				$ 82,100,000
Working capital and other adjustments payable	$ 18,000,000
Pending resolution contingencies period under indemnification agreement	18 months
Pre tax gain on sale of business				$ 61,800,000
Automotive Business [Member] \| Maximum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Additional cash proceeds to be received from revenue based earnout	$ 30,000,000
Consulting Agreement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Non design advisory services period	2 years
Consulting Agreement [Member] \| Maximum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration on sale of business	$ 15,000,000

Discontinued Operations - Summary of Operating Results Through Dates of Divestiture Related to Divested Businesses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Discontinued Operations and Disposal Groups [Abstract]
Revenue		$ 22,454		$ 40,762
Cost of revenue		15,161		26,687
Gross profit		7,293		14,075
Operating expenses:
Research and development		622		1,314
Selling, general and administrative		980		1,351
Restructuring charges	$ 0	0	$ 0	0
Total operating expenses		1,602		2,665
Income from discontinued operations		5,691		11,410
Other income	1,875		3,750
Gain on sale	308		308
Income before income taxes	2,183	5,691	4,058	11,410
Income tax provision	787	2,052	1,463	4,113
Income from discontinued operations	1,396	3,639	2,595	7,297
Above includes depreciation & amortization of		57		123
Cashflow from Operating Activities		2,227		3,744
Cashflow from Investing Activities	$ 3,750	$ (250)	$ 3,750	$ (250)

Investments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Oct. 02, 2015	Apr. 01, 2016
Schedule of Investments [Abstract]
Purchase of investment securities	$ 40,200	$ 7,696

Investments - Summary of Available for Sale Investments (Detail) - USD ($) $ in Thousands	6 Months Ended
	Apr. 01, 2016	Apr. 01, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		$ 23,711
Gross Unrealized Holding Gains	$ 0
Gross Unrealized Holding Losses	(79)
Aggregate Fair Value	23,632	23,632
Beginning balance	39,557
Net Realized/ Unrealized Losses	(329)
Purchases and Issuances	7,696
Sales and Settlements	(23,292)
Ending balance	23,632
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		14,676
Gross Unrealized Holding Gains	0
Gross Unrealized Holding Losses	(72)
Aggregate Fair Value	14,604	14,604
Beginning balance	24,462
Net Realized/ Unrealized Losses	(257)
Purchases and Issuances	7,696
Sales and Settlements	(17,297)
Ending balance	14,604
Agency Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		9,035
Gross Unrealized Holding Gains	0
Gross Unrealized Holding Losses	(7)
Aggregate Fair Value	9,028	$ 9,028
Beginning balance	15,095
Net Realized/ Unrealized Losses	(72)
Sales and Settlements	(5,995)
Ending balance	$ 9,028

Investments - Summary of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Amortized Cost and Fair Value Debt Securities [Abstract]
Less than 1 year	$ 10,831	$ 16,259
Over 1 year	12,801	23,298
Total investments	$ 23,632	$ 39,557

Fair Value - Additional Information (Detail)	6 Months Ended
Fair Value - Additional Information (Detail)	Apr. 01, 2016 USD ($) $ / shares
Fair Value Measurements Of Financial Instruments [Line Items]
Contingent consideration, maximum	$ 1,500,000
Expected life of common stock warrants	4 years 8 months 12 days
Expected volatility	36.90%
Risk free rate	1.20%
Exercise price \| $ / shares	$ 14.04
Money Market Funds [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Investment maturity	90 days or less
Fair Value, Measurements, Recurring [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Transfer of assets in or out of Level 3	$ 0
Fair value assets transfer from level 1 to level 2	0
Fair value assets transfer from level 2 to level 1	$ 0

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 25,749	$ 54,557
Total liabilities measured at fair value	41,697	22,972
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	14,604	24,462
US Treasuries and Agency Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		15,095
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,117	15,000
Agency Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	9,028
Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	796	1,150
Common Stock Warrant Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	40,901	21,822
Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,117	15,000
Active Markets for Identical Assets (Level 1) [Member] \| Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,117	15,000
Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	23,632	39,557
Observable Inputs (Level 2) [Member] \| Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	14,604	24,462
Observable Inputs (Level 2) [Member] \| US Treasuries and Agency Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		15,095
Observable Inputs (Level 2) [Member] \| Agency Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	9,028
Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	41,697	22,972
Unobservable Inputs (Level 3) [Member] \| Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	796	1,150
Unobservable Inputs (Level 3) [Member] \| Common Stock Warrant Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	$ 40,901	$ 21,822

Fair Value - Changes in Assets and Liabilities with Inputs Classified within Level 3 of Fair Value (Detail) - USD ($) $ in Thousands	6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Changes in financial liabilities with inputs classified within Level 3 of the fair value, beginning balance	$ 1,150	$ 820
Net Realized/ Unrealized Losses Included in Earnings	46
Purchases and Issuances	0	0
Sales and Settlements	(400)
Transfers in and/or (out) of Level 3	0	0
Changes in financial liabilities with inputs classified within Level 3 of the fair value, ending balance	796	820
Common Stock Warrant Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Changes in financial liabilities with inputs classified within Level 3 of the fair value, beginning balance	21,822	15,801
Net Realized/ Unrealized Losses Included in Earnings	19,079	16,217
Purchases and Issuances	0	0
Transfers in and/or (out) of Level 3	0	0
Changes in financial liabilities with inputs classified within Level 3 of the fair value, ending balance	$ 40,901	32,018
Trading Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Changes in financial asset with inputs classified within Level 3 of the fair value, beginning balance		250
Net Realized/ Unrealized Losses Included in Earnings		0
Purchases and Issuances		250
Sales and Settlements		0
Transfers in and/or (out) of Level 3		0
Changes in financial asset with inputs classified within Level 3 of the fair value, ending balance		$ 500

Inventories - Components of Inventories (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 59,173	$ 44,329
Work-in-process	11,104	3,086
Finished goods	36,695	32,528
Total	$ 106,972	$ 79,943

Property Plant and Equipment - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 168,580	$ 146,182
Less accumulated depreciation and amortization	(68,943)	(62,423)
Property and equipment - net	99,637	83,759
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	12,559	10,981
Construction in Process [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	20,092	25,898
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	109,755	89,852
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	12,779	9,161
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,809	983
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 11,586	$ 9,307

Property Plant and Equipment - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 5.2	$ 4.2	$ 9.5	$ 8.0

Debt - Additional Information (Detail) - USD ($)	6 Months Ended
Debt - Additional Information (Detail) - USD ($)	Apr. 01, 2016	May 08, 2014
Debt Instrument [Line Items]
Estimated fair value of Term Loans	$ 343,400,000
Term Loans [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing availability		$ 350,000,000
Revolving credit facility maturity date	May 31, 2021
Line of credit effective interest rate	4.50%
Revolving Credit Facility One [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing availability		$ 130,000,000
Revolving credit facility maturity date	May 31, 2019
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, remaining borrowing capacity	$ 0
Debt issuance fee	8,700,000
Unamortized deferred financing costs	$ 6,300,000
Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Percentage of unused line fee	0.25%
Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Percentage of unused line fee	0.375%

Debt - Schedule of Remained Outstanding on Term Loans (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Debt Instrument [Line Items]
Current portion	$ 4,499	$ 4,058
Long-term, less current portion	341,396	$ 340,504
Term Loans [Member]
Debt Instrument [Line Items]
Principal balance	343,875
Unamortized discount	(1,906)
Total Term Loans	341,969
Total Term Loans	341,969
Current portion	3,500
Long-term, less current portion	$ 338,469

Debt - Schedule of Minimum Principal Payments under Term Loans (Detail) - Term Loans [Member] $ in Thousands	Apr. 01, 2016 USD ($)
Debt Instrument [Line Items]
2016 (rest of fiscal year)	$ 1,750
2017	3,500
2018	3,500
2019	3,500
2020	3,500
Thereafter	328,125
Total	$ 343,875

Intangible Assets - Summary of Amortization Expense of Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Finite-Lived Intangible Assets [Line Items]
Total	$ 12,946	$ 10,443	$ 24,536	$ 16,855
Cost of Revenue [Member]
Finite-Lived Intangible Assets [Line Items]
Total	6,642	7,347	13,809	12,706
Selling, General and Administrative [Member]
Finite-Lived Intangible Assets [Line Items]
Total	$ 6,304	$ 3,096	$ 10,727	$ 4,149

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015	Apr. 03, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 378,411	$ 318,006
Less accumulated amortization	(98,876)	(74,340)
Intangible assets-net	279,535	243,666
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	164,365	162,536
Less accumulated amortization	(64,500)		$ (39,400)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	202,646	144,070
Less accumulated amortization	(34,400)		$ (12,800)
In-Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	8,000	8,000
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 3,400	$ 3,400

Intangible Assets - Summary of Activity in Intangible Assets and Goodwill (Detail) $ in Thousands	6 Months Ended
	Apr. 01, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
Balance	$ 411,352
Acquired	88,796
Currency translation adjustment	5,505
Other intangibles purchased	681
Impairments of intangible assets	(10,088)
Balance	496,246
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	3,400
Balance	3,400
Goodwill [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	93,346
Acquired	23,046
Currency translation adjustment	1,443
Balance	117,835
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	162,536
Acquired	10,400
Currency translation adjustment	836
Other intangibles purchased	681
Impairments of intangible assets	(10,088)
Balance	164,365
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	144,070
Acquired	55,350
Currency translation adjustment	3,226
Balance	202,646
In-Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	8,000
Balance	$ 8,000

Intangible Assets - Summary of Estimated Amortization of Intangible Assets (Detail) $ in Thousands	Apr. 01, 2016 USD ($)
Finite-Lived Intangible Assets, Net [Abstract]
2016 Remaining	$ 25,124
2017	50,312
2018	46,911
2019	40,383
2020	32,604
Thereafter	72,802
Total	$ 268,136

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 01, 2016	Apr. 01, 2016	Apr. 03, 2015	Oct. 02, 2015
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 98,876	$ 98,876		$ 74,340
Impairment charges	13,000	12,955	$ 3,500
Impairments charges, fixed assets, intangibles and contractual commitment	11,005	11,005
Inventory write off	2,000
Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Impairments charges, fixed assets, intangibles and contractual commitment	10,100
Fixed assets [Member]
Finite-Lived Intangible Assets [Line Items]
Impairments charges, fixed assets, intangibles and contractual commitment	600
Contractual Commitments [Member]
Finite-Lived Intangible Assets [Line Items]
Impairments charges, fixed assets, intangibles and contractual commitment	300
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	64,500	64,500	39,400
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 34,400	$ 34,400	$ 12,800

Stockholders' Equity - Additional Information (Detail) - $ / shares	1 Months Ended
	Mar. 31, 2012	Apr. 01, 2016	Oct. 02, 2015
Class of Warrant or Right [Line Items]
Unvested shares of restricted common stock excluded from outstanding shares		5,100	11,000
Preferred stock, shares authorized		10,000,000
Preferred stock, par value		$ 0.001
Common stock, shares authorized		300,000,000
Common stock, par value		$ 0.001
Common stock warrants per share	$ 14.05
Warrants expire	Dec. 21, 2020
Common Stock [Member]
Class of Warrant or Right [Line Items]
Common stock warrants	1,281,358

Stockholders' Equity - Summary of Activity of Warrant Liability (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Statement of Stockholders' Equity [Abstract]
Beginning Balance			$ 21,822
Change in estimated fair value	$ 4,201	$ 5,609	19,079	$ 16,217
Ending Balance	$ 40,901		$ 40,901

Earnings (Loss) Per Share - Computation for Basic and Diluted Net Loss Per Share of Common Stock (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Numerator:
Loss from continuing operations	$ (12,045)	$ (11,176)	$ (28,815)	$ (21,140)
Income from discontinued operations	1,396	3,639	2,595	7,297
Net loss	(10,649)	(7,537)	(26,220)	(13,843)
Warrant liability gain	0	0	0	0
Net loss attributable to common stockholders	$ (10,649)	$ (7,537)	$ (26,220)	$ (13,843)
Denominator:
Weighted average common shares outstanding-basic	53,228	50,593	53,122	49,100
Weighted average common shares outstanding-diluted	53,228	50,593	53,122	49,100
Basic income (loss) per common share:
Continuing operations	$ (0.23)	$ (0.22)	$ (0.54)	$ (0.43)
Discontinued operations	0.03	0.07	0.05	0.15
Loss per share - basic	(0.20)	(0.15)	(0.49)	(0.28)
Diluted income (loss) per common share:
Continuing operations	(0.23)	(0.22)	(0.54)	(0.43)
Discontinued operations	0.03	0.07	0.05	0.15
Loss per share - diluted	$ (0.20)	$ (0.15)	$ (0.49)	$ (0.28)
Stock Options Restricted Stock and Warrants [Member]
Denominator:
Dilutive effect of options and warrants	0	0	0	0

Earnings (Loss) Per Share - Common Equivalent Shares Excluded from Calculation from Net Income Per Share (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total common stock equivalent shares excluded	2,139	1,908	2,081	1,815
Restricted Stock Units and Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total common stock equivalent shares excluded	935	721	900	704
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total common stock equivalent shares excluded	381	441	384	666
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total common stock equivalent shares excluded	823	746	797	444

Restructurings - Summary of Costs Incurred and Remaining Balances Included in Accrued Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Restructuring and Related Activities [Abstract]
Beginning Balance of accrued costs			$ 943
Current period adjustments	$ 851	$ 413	1,008	$ 413
Payments			(770)
Ending Balance of accrued costs	$ 1,181		$ 1,181

Restructurings - Additional Information (Detail)	Apr. 01, 2016 USD ($)
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Additional restructuring costs expects during the remainder of 2016	$ 4,000,000
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Additional restructuring costs expects during the remainder of 2016	$ 6,000,000

Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	$ 52.5		$ 52.5
Compensation cost expected to be recognized			4 years 2 months 12 days
Stock options outstanding	1,100,000		1,100,000
Weighted-average exercise price per share	$ 22.69		$ 22.69
Weighted-average remaining contractual term			6 years 2 months 12 days
Aggregate intrinsic value stock options outstanding	$ 23.8		$ 23.8
Shares granted			624,000
Total intrinsic value of options exercised	$ 0.8	$ 3.2	$ 2.7	$ 4.0
Performance Based Non-qualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost expected to be recognized			3 years
Shares granted			300,000
Grant date fair value of options granted			$ 3.5
Term of vesting of options			7 years
Share price at which remaining unamortized compensation cost will be recognized			$ 64.22
Restricted Stock, Restricted Stock Units and Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock units vesting			$ 15.7	$ 13.1
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants	8,200,000		8,200,000
Vesting period of options granted			4 years
Period of options granted			10 years
Minimum [Member] \| Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of options granted to vest at the end of one year			25.00%

Share-Based Compensation - Effects of Stock-Based Compensation Expense Related to Stock-Based Awards to Employees and Non-Employees (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015
Components Of Salaries And Benefits [Line Items]
Total stock-based compensation expense	$ 5,844	$ 5,969	$ 13,226	$ 9,128
Cost of Revenue [Member]
Components Of Salaries And Benefits [Line Items]
Total stock-based compensation expense	493	549	950	895
Research and Development [Member]
Components Of Salaries And Benefits [Line Items]
Total stock-based compensation expense	1,671	1,165	3,508	2,127
Selling, General and Administrative [Member]
Components Of Salaries And Benefits [Line Items]
Total stock-based compensation expense	$ 3,680	$ 4,255	$ 8,768	$ 6,106

Share-Based Compensation - Summary of Restricted Stock, Restricted Stock Unit and Performance-based Restricted Stock Unit Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Apr. 01, 2016	Oct. 02, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of RSA, RSUs and PRSUs - beginning balance	1,692
Number of RSA, RSUs and PRSUs, Granted	624
Number of RSA, RSUs and PRSUs, Vested and released	(454)
Number of RSA, RSUs and PRSUs, Forfeited, canceled or expired	(23)
Number of RSA, RSUs and PRSUs - ending balance	1,839
Weighted-Average Grant Date Fair Value - beginning balance	$ 25.30
Weighted-Average Grant Date Fair Value, Granted	40.72
Weighted-Average Grant Date Fair Value, Vested and released	23.52
Weighted-Average Grant Date Fair Value, Forfeited, canceled or expired	26.95
Weighted-Average Grant Date Fair Value - ending balance	$ 30.95
Aggregate Intrinsic Value	$ 81,876	$ 48,375

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Income Taxes [Line Items]
U.S. federal statutory income tax rate	35.00%	35.00%
Unrecognized tax benefit	$ 1,700,000
Unrecognized income tax penalties and interest expense	0
FiBest Limited [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	2,600,000
Deferred income tax liability	12,932,000
Net deferred income tax liability	15,500,000
FiBest Limited [Member] \| NOL and Tax Credit Carryforwards [Member]
Income Taxes [Line Items]
Deferred income tax asset	$ 2,600,000

Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Apr. 01, 2016	Apr. 01, 2016	Apr. 03, 2015
Privately Held Company [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Other income-related party	$ 100,000	$ 100,000	$ 100,000
GaAs Labs [Member]
Related Party Transaction [Line Items]
Minimum service requirements or payment obligations	0	$ 0
Notice period to terminate agreement		30 days
GaAs Labs [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Other income-related party	$ 100,000	$ 100,000

Supplemental Cash Flow Information - Additional Information (Detail) - USD ($) $ in Millions	Apr. 01, 2016	Apr. 03, 2015
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Unpaid amounts related to purchase of assets	$ 0.7	$ 0.7

Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information Regarding Non-cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands	6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Cash paid for interest	$ 8,229	$ 7,574
Cash paid for income taxes	$ 722	$ 794

Geographic and Significant Customer Information - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Apr. 01, 2016 Customer	Apr. 03, 2015	Apr. 01, 2016 Segment	Apr. 03, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable operating segment \| Segment			1
Number of major customers \| Customer	10
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	66.00%	59.00%	64.00%	58.00%

Geographic and Significant Customer Information - Summary of Different Geographic Regions (Detail) - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Apr. 01, 2016

Apr. 03, 2015

Apr. 01, 2016

Apr. 03, 2015

Oct. 02, 2015

Revenues from External Customers and Long-Lived Assets [Line Items]

Revenue by Geographic Region

$ 133,579

$ 102,431

$ 249,353

$ 198,987

Long-Lived Assets by Geographic Region

99,637

$ 83,759

United States [Member]

Revenues from External Customers and Long-Lived Assets [Line Items]

Revenue by Geographic Region

36,502

36,336

70,984

82,185

Long-Lived Assets by Geographic Region

83,553

72,617

Asia Pacific [Member]

Revenues from External Customers and Long-Lived Assets [Line Items]

Revenue by Geographic Region

^[1]

87,009

57,901

159,464

99,952

Long-Lived Assets by Geographic Region

^[1]

13,167

8,740

Other Countries [Member]

Revenues from External Customers and Long-Lived Assets [Line Items]

Revenue by Geographic Region

^[2]

10,068

$ 8,194

18,905

$ 16,850

Long-Lived Assets by Geographic Region

^[2]

$ 2,917

$ 2,402

[1]	Asia Pacific represents China, Taiwan, Hong Kong, Japan, Singapore, India, Thailand, Korea, Australia, Malaysia and the Philippines.
[2]	No international country or region represented greater than 10% of the total net long-lived assets as of the dates presented, other than the Asia-Pacific region as presented above.

Geographic and Significant Customer Information - Summary of Different Geographic Regions (Parenthetical) (Detail)	6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of geographic segment long-lived assets threshold	10.00%	10.00%
Other Countries [Member] \| Net long lived assets [Member] \| Customer Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.00%	10.00%

Geographic and Significant Customer Information - Summary of Customer Concentrations as Percentage of Revenue and Accounts Receivable (Detail) - Customer Concentration Risk [Member]	3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015	Oct. 02, 2015
Sales Revenue, Net [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	66.00%	59.00%	64.00%	58.00%
Customer A [Member] \| Sales Revenue, Net [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	17.00%	5.00%	16.00%	6.00%
Customer A [Member] \| Accounts Receivable [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage			13.00%		14.00%
Customer B [Member] \| Sales Revenue, Net [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	12.00%	13.00%	12.00%	13.00%
Customer B [Member] \| Accounts Receivable [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage			16.00%		10.00%
Customer C [Member] \| Sales Revenue, Net [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	11.00%	19.00%	12.00%	21.00%
Customer C [Member] \| Accounts Receivable [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage			14.00%		22.00%
Customer D [Member] \| Sales Revenue, Net [Member]
Revenue from External Customer [Line Items]
Concentration risk, percentage	10.00%	2.00%	10.00%	1.00%