MACOM Technology Solutions (MTSI) 10-Q 1 Aug 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Jul. 04, 2014	Jul. 28, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	4-Jul-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
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	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	47,528,883

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Jul. 04, 2014	Sep. 27, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$173,508	$110,488
Accounts receivable, net	75,795	63,526
Inventories	69,923	54,908
Income taxes receivable	4,010	915
Prepaid expenses and other current assets	16,778	6,206
Deferred income taxes	25,850	10,404
Total current assets	365,864	246,447
Property and equipment, net	48,860	32,735
Goodwill	13,462	6,750
Intangible assets, net	162,494	24,798
Deferred income taxes	70,358	404
Other assets	18,296	5,501
TOTAL ASSETS	679,334	316,635
Current liabilities:	'	'
Current portion of long-term debt	8,032	'
Accounts payable	29,551	25,986
Accrued liabilities	41,879	16,921
Income taxes payable	125	20
Deferred revenue	16,398	9,231
Total current liabilities	95,985	52,158
Long-term debt, less current portion	343,938	'
Warrant liability	17,439	11,873
Other long-term liabilities	7,908	3,478
Deferred income taxes	'	1,985
Total liabilities	465,270	69,494
Commitments and contingencies (Note 10)	'	'
Stockholders' equity:	'	'
Preferred stock	0	0
Common stock	47	46
Additional paid-in capital	376,924	379,780
Treasury stock	-330	-330
Accumulated deficit	-162,048	-132,188
Accumulated other comprehensive loss	-529	-167
Total stockholders' equity	214,064	247,141
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$679,334	$316,635

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Income Statement [Abstract]	'	'	'	'
Revenue	$112,364	$83,477	$304,345	$238,396
Cost of revenue	62,150	47,973	191,546	138,573
Gross profit	50,214	35,504	112,799	99,823
Operating expenses:	'	'	'	'
Research and development	20,810	12,139	53,587	33,938
Selling, general and administrative	22,065	13,449	65,952	38,106
Contingent consideration	'	'	'	-577
Restructuring charges	'	1,060	15,725	1,060
Total operating expenses	42,875	26,648	135,264	72,527
Income (loss) from operations	7,339	8,856	-22,465	27,296
Other income (expense)	'	'	'	'
Warrant liability (expense) gain	-2,782	1,060	-5,566	-2,035
Interest expense	-5,625	-190	-7,833	-616
Other income	1,354	123	2,441	293
Total other income (expense)	-7,053	993	-10,958	-2,358
Income (loss) before income taxes	286	9,849	-33,423	24,938
Income tax provision (benefit)	-897	2,869	-8,168	8,482
Income (loss) from continuing operations	1,183	6,980	-25,255	16,456
Loss from discontinued operations	'	'	-4,605	'
Net income (loss)	$1,183	$6,980	($29,860)	$16,456
Basic income (loss) per share:	'	'	'	'
Income (loss) from continuing operations	$0.03	$0.15	($0.54)	$0.36
Loss from discontinued operations	'	'	($0.10)	'
Net income (loss) per share - basic	$0.03	$0.15	($0.64)	$0.36
Diluted income (loss) per share:	'	'	'	'
Income (loss) from continuing operations	$0.02	$0.15	($0.54)	$0.35
Loss from discontinued operations	'	'	($0.10)	'
Net income (loss) per share - diluted	$0.02	$0.15	($0.64)	$0.35
Shares used:	'	'	'	'
Basic	47,280	46,066	46,856	45,788
Diluted	48,524	47,221	46,856	47,036

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Amounts Reclassified Out Of Accumulated Other Comprehensive Income Loss [Abstract]	'	'	'	'
Net income (loss)	$1,183	$6,980	($29,860)	$16,456
Foreign currency translation loss	25	9	-362	-124
Total comprehensive income (loss)	$1,208	$6,989	($30,222)	$16,332

Condensed_Consolidated_Stateme2

Condensed Consolidated Statement of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
In Thousands
Balance at Sep. 27, 2013	$247,141	$46	($330)	($167)	$379,780	($132,188)
Balance, Shares at Sep. 27, 2013	'	46,419	23	'	'	'
Capital contributions	3,200	'	'	'	3,200	'
Common control business combination	-26,080	'	'	'	-26,080	'
Tax benefits acquired in common control business combination	6,160	'	'	'	6,160	'
Issuance of common stock upon exercise of common stock options and employee stock purchases	3,777	1	'	'	3,776	'
Issuance of common stock upon exercise of common stock options and employee stock purchases, Shares	446	596	'	'	'	'
Vesting of restricted common stock and units	0	0	'	'	'	'
Vesting of restricted common stock and units, Shares	'	469	'	'	'	'
Common stock repurchased and retired	-1,108	'	'	'	-1,108	'
Common stock repurchased and retired, Shares	'	-18	'	'	'	'
Share-based compensation	8,525	'	'	'	8,525	'
Fair value of vested awards assumed in acquisition	785	'	'	'	785	'
Excess tax benefits	1,886	'	'	'	1,886	'
Foreign currency translation	-362	'	'	-362	'	'
Net loss	-29,860	'	'	'	'	-29,860
Balance at Jul. 04, 2014	$214,064	$47	($330)	($529)	$376,924	($162,048)
Balance, Shares at Jul. 04, 2014	'	47,466	23	'	'	'

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'
Net income (loss)	($29,860)	$16,456
Adjustments to reconcile net income (loss) to net cash from operating activities (net of acquisition):	'	'
Warrant liability expense	5,566	2,035
Depreciation and amortization	26,422	11,188
Impact of inventory valuation step-up in an acquisition	18,053	'
Amortization of deferred financing costs	2,641	247
Contingent consideration	'	-577
Deferred income taxes	-13,720	215
Loss on disposal of property and equipment	219	28
Share-based compensation	8,525	4,366
Change in operating assets and liabilities, net of effects from an acquisition:	'	'
Payment of contingent consideration	'	-5,328
Accounts receivable	1,253	-753
Inventories	-6,197	2,565
Prepaid expenses and other assets	-1,146	-980
Accounts payable	-7,086	-2,895
Accrued and other liabilities	2,069	1,344
Income taxes	-3,720	1,223
Deferred revenue	6,711	299
Net cash provided by operating activities	9,730	29,433
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Acquisition of a business - net of cash acquired	-258,108	'
Proceeds from sale of assets	12,000	'
Purchases of property and equipment	-10,279	-7,171
Sale of business	8,627	'
Purchase of securities	-5,250	'
Acquisition of intellectual property	-5,088	'
Net cash used in investing activities	-258,098	-7,171
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Proceeds from issuance of long-term debt	347,375	'
Financing costs	-8,790	-126
Capital contributions	3,200	6,515
Proceeds from stock option exercises and employee stock purchases	3,777	1,697
Common stock repurchased and retired	-1,108	-77
Excess tax benefits	1,886	1,470
Payment of assumed debt	-34,952	'
Payments of contingent consideration	'	-675
Other	'	-4
Net cash from financing activities	311,388	8,800
NET CHANGE IN CASH AND CASH EQUIVALENTS	63,020	31,062
CASH AND CASH EQUIVALENTS - Beginning of period	110,488	84,600
CASH AND CASH EQUIVALENTS - End of period	173,508	115,662
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:	'	'
Cash paid for interest	2,877	369
Cash paid for income taxes	$4,684	$5,923

Description_of_Business_Basis_

Description of Business, Basis of Presentation and Accounting	9 Months Ended
	Jul. 04, 2014
Accounting Policies [Abstract]	'
Description of Business, Basis of Presentation and Accounting	'
	1. DESCRIPTION OF BUSINESS, BASIS OF PRESENTATION AND ACCOUNTING
	Description of Business—M/A-COM Technology Solutions Holdings, Inc. (MACOM or the Company) was incorporated in Delaware on March 25, 2009. MACOM is a provider of high-performance analog semiconductor solutions for use in wireless and wireline applications across the radio frequency (RF), microwave and millimeterwave spectrum and in high speed communications. Headquartered in Lowell, Massachusetts, MACOM has offices in North America, Europe, Asia and Australia.
	The Company has one reportable operating segment which designs, develops, manufactures and markets semiconductors and modules.
	Basis of Presentation—The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations.
	The Company’s fiscal year ends on the Friday closest to September 30. For fiscal years in which there are 53 weeks, the first quarter reporting period includes 14 weeks. Fiscal year 2013 was 52 weeks in length. Fiscal year 2014 is 53 weeks in length and the three and nine months ended July 4, 2014 include 13 and 40 weeks, respectively.
	MACOM acquired Nitronex, LLC (Nitronex) in connection with a common-control business combination on February 13, 2014 (Nitronex Acquisition). Nitronex, a supplier of high-performance gallium nitride (GaN) semiconductors for RF, microwave, and millimeterwave applications, was previously acquired by GaAs Labs, LLC (GaAs Labs) on June 25, 2012. GaAs Labs is a stockholder in MACOM and GaAs Labs, Nitronex and MACOM were under common control from June 25, 2012 through February 13, 2014 due to a common controlling stockholder. The accompanying condensed financial statements for the nine months ended July 4, 2014 and three and nine months ended June 28, 2013 combine MACOM’s historical consolidated financial statements with the historical financial statements of Nitronex from June 25, 2012 through February 13, 2014, and have been presented in a manner similar to a pooling-of-interests to include the results of operations of each business since the date of common control. Since February 13, 2014, the results of Nitronex are included with those of MACOM on a consolidated basis. The accompanying combined, condensed, and consolidated financial statements are referred to as “consolidated” for all periods presented.
	These consolidated financial statements should be read in conjunction with the Company’s combined consolidated financial statements and notes as of September 27, 2013 and September 28, 2012, and for each of the three years in the period ended September 27, 2013 included in the Company’s Current Report on Form 8-K filed with the SEC on July 3, 2014, which financial statements were reissued to include the historical financial results and financial position of Nitronex since June 25, 2012.
	In the opinion of management, the accompanying unaudited consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year 2014. The condensed consolidated financial statements include the Company and its wholly-owned subsidiaries. All material intercompany balances and transactions have been eliminated.
	Use of Estimates—The preparation of consolidated financial statements in conformity with GAAP 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, the Company bases 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. The accounting policies which our management believes involve the most significant application of judgment, or involve complex estimation include revenue recognition, inventory, warranty obligations, share-based compensation, income taxes, fair value measurements related to purchase accounting, and stock warrant liabilities. Actual results could differ from estimates, and material effects on our operating results and financial position may result.
	Revenue Recognition—Revenue from the sale of products is recognized when persuasive evidence of an arrangement exists, delivery has occurred, the price to the buyer is fixed or determinable, and collectability is reasonably assured. Provided other revenue recognition criteria are met, product revenue is recognized upon transfer of title and risk of loss, which is generally upon shipment. The Company has distribution agreements that provide distributors with rights to return certain products and price protection on certain products. Generally, revenue is recognized upon delivery of products, providing all other criteria is met. When rights of return exist, the Company will provide a reserve for estimated returns at the time of product delivery. When the Company is unable to estimate the amount of its products that may be returned by such distributors or the ultimate sales price of products sold to such distributors, revenue is recognized when the distributors have sold the products to third-party customers, at which point the return rights and any price protection feature lapse. Accordingly, in this circumstance, the Company defers the recognition of revenue until the products are sold by the distributors to third-party customers and the Company defers both the revenue recognition and related cost of revenue on these products by recording the revenue as deferred revenue and the associated cost remains recorded in inventory in the accompanying consolidated balance sheets. When these products are sold to a distributor’s customers, the Company recognizes the revenue and associated cost of revenue. Shipping and handling fees billed to customers are recorded as revenue while the related costs are classified as a component of costs of revenue. The Company provides warranties for its products and accrues the estimated costs of warranty claims in the period the related revenue is recorded.
	Recent Accounting Standards—Under the Jumpstart Our Business Startups Act (JOBS Act), the Company meets the definition of an emerging growth company. The Company has elected to avail itself of the extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act.
	In April 2014, the FASB issued Accounting Standards Update 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), which raises the threshold for disposals to qualify as discontinued operations. A discontinued operation is defined as: (1) a component of an entity or group of components that has been disposed of or classified as held for sale and represents a strategic shift that has or will have a major effect on an entity’s operations and financial results; or (2) an acquired business that is classified as held for sale on the acquisition date. ASU 2014-08 also requires additional disclosures regarding discontinued operations, as well as material disposals that do not meet the definition of discontinued operations. The application of this guidance is prospective from the date of adoption and applies only to disposals (or new classifications to held for sale) that have not been reported as discontinued operations in our previously issued financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. ASU 2014-09 requires revenue recognition to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 sets forth a new revenue recognition model that requires identifying the contract, identifying the performance obligations, determining the transaction price, allocating the transaction price to performance obligations and recognizing the revenue upon satisfaction of performance obligations. The amendments in the ASU can be applied either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying the update recognized at the date of the initial application along with additional disclosures. The Company is currently evaluating the impact of ASU 2014-09, which is effective for the Company in our fiscal year beginning on September 30, 2017.

Acquisitions

Acquisitions	9 Months Ended
	Jul. 04, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	2. ACQUISITIONS
	Acquisition under Common Control—On February 13, 2014, MACOM acquired Nitronex, an entity under common control, whereby MACOM completed the Nitronex Acquisition for $26.1 million in cash in exchange for all of the outstanding ownership interests of Nitronex. The purchase price includes $3.9 million held on account by a third-party escrow agent pending any claims by MACOM in connection with general representation matters made by GaAs Labs in the transaction. The escrow agreement expires in August 2015, at which point if no claims are made, all amounts will be paid to GaAs Labs. MACOM funded the Nitronex Acquisition through the use of available cash and debt.
	The Company has presented payments in the form of capital contributions received by Nitronex from GaAs Labs prior to the Nitronex Acquisition of $3.2 million and $6.5 million, respectively, in the nine months ended July 4, 2014 and June 28, 2013, as an increase to additional paid-in capital in the accompanying consolidated financial statements.
	Acquisition of Mindspeed Technologies, Inc.—On December 18, 2013, MACOM completed the acquisition of Mindspeed Technologies, Inc. (Mindspeed), a supplier of high performance analog products (Mindspeed Acquisition). MACOM acquired Mindspeed to further its expansion into new products and applications.
	MACOM completed the Mindspeed Acquisition through a cash tender offer (Offer) by Micro Merger Sub, Inc. (Merger Sub), a wholly-owned subsidiary of MACOM, for all of the outstanding shares of common stock, par value $0.01 per share, of Mindspeed (Shares) at a purchase price of $5.05 per share, net to the seller in cash, without interest, less any applicable withholding taxes (Offer Price). Immediately following the Offer, Merger Sub merged with and into Mindspeed, with Mindspeed surviving as a wholly-owned subsidiary of MACOM. At the effective time of the merger, each Share not acquired in the Offer (other than shares held by MACOM, Merger Sub and Mindspeed, and shares of restricted stock assumed by MACOM in the merger) was converted into the right to receive the Offer Price. MACOM funded the Mindspeed Acquisition through the use of available cash and debt (see Note 6). The aggregate purchase price for the Shares, net of cash acquired, was $232.0 million and MACOM assumed $80.4 million of liabilities and incurred costs of $4.5 million expensed in the nine months ended July 4, 2014.
	The Mindspeed Acquisition was accounted for as a purchase and the operations of Mindspeed have been included in MACOM’s consolidated financial statements since December 18, 2013, the date of acquisition.
	MACOM is recognizing all 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 Mindspeed 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. A preliminary allocation follows (in thousands):
	Current assets	$	51,801
	Intangible assets		155,783
	Other assets		98,902
	Total assets acquired		306,486
	Current liabilities		34,966
	Debt		39,824
	Other liabilities		5,595
	Total liabilities assumed		80,385
	Net assets acquired		226,101
	Consideration:
	Cash paid upon closing, net of cash acquired		232,028
	Fair value of vested awards assumed in acquisition		785
	Total consideration		232,813
	Goodwill	$	6,712
	In connection with the Mindspeed Acquisition, MACOM assumed all of the outstanding options and all unvested restricted stock awards under Mindspeed’s equity plans and converted such options and stock awards into equivalent MACOM awards under the same general terms and conditions as were in existence with adjustments made to shares and exercise prices, if any, pursuant to a formula stipulated in the terms of the acquisition. The fair value of the assumed options and stock awards was $4.1 million, of which $0.8 million relates to vested stock options and has been included in the purchase consideration and the remainder relates to unvested stock options and stock awards, which will be expensed as the remaining services are provided.
	The components of the acquired intangible assets on a preliminary basis were as follows (in thousands):
		Amount			Useful Lives
					(Years)
	Developed technology	$	121,283		7
	Customer relationships		12,920		10
	In-process research and development		21,580		N/A
		$	155,783
	The overall weighted-average life of the identified intangible assets acquired in the acquisition is estimated to be seven years and the assets are being amortized over their estimated useful lives based upon the pattern over which the Company expects 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 and would be retroactively reflected in the financial statements as of July 4, 2014 and for the interim periods then ended.
	The following is a summary of Mindspeed revenue and earnings, excluding a restructuring charge and change-in-control payments aggregating $14.9 million, included in MACOM’s accompanying condensed consolidated statements of operations for the nine months ended July 4, 2014 (in thousands):
	Revenue	$	64,765
	Loss from continuing operations before income taxes		(18,534	)
	Subsequent to closing the Mindspeed Acquisition, MACOM divested the wireless business of Mindspeed. The operations of the wireless business are included in discontinued operations through the date of sale. The Company completed the sale of the wireless business in February 2014. The accompanying condensed consolidated statement of operations for the nine months ended July 4, 2014, include the following operating results related to the business to be divested (in thousands):
	Revenue	$	2,440
	Loss before income taxes		(7,381	)
	Benefit for income taxes		2,776
	Loss from discontinued operations, net		(4,605	)
	On May 9, 2014, Mindspeed completed the sale of its CPE communication processor product line for $12.0 million and a potential additional $2.0 million based upon the achievement of certain revenue-related milestones through December 31, 2014. No gain or loss was recognized on the transaction.
	Supplemental Pro Forma Data — The pro forma statements of operations data for the nine months ended July 4, 2014 below give effect to the Mindspeed Acquisition, described above, as if it had occurred at September 28, 2013. These amounts have been calculated after applying MACOM’s accounting policies and adjusting the results of Mindspeed to reflect the additional depreciation and amortization that would have been charged assuming the fair value adjustments to property, plant and equipment and intangible assets and additional interest expense on acquisition-related borrowings had been applied and incurred since September 28, 2013. The supplemental pro forma earnings for the nine months ended July 4, 2014 were adjusted to exclude discontinued operations, acquisition costs of $4.5 million paid by MACOM, seller-related professional fees incurred by Mindspeed prior to the acquisition, amortization and impairments of intangible assets incurred by Mindspeed prior to the acquisition and $14.9 million of restructuring charges and change-in-control payments, as well as the impact of the step-up to fair value of the acquired inventory. This pro forma data is presented for informational purposes only and does not purport to be indicative of the Company’s future results of operations.
	Revenue	$	323,801
	Net loss		(27,051	)

Financial_Instruments

Financial Instruments	9 Months Ended
	Jul. 04, 2014
Fair Value Disclosures [Abstract]	'
Financial Instruments	'
	3. FINANCIAL INSTRUMENTS
	Financial instruments measured at fair value on a recurring basis consist of the following (in thousands):
		July 4, 2014
		Fair		Active			Observable		Unobservable
		Value		Markets			Inputs		Inputs
				for			(Level 2)		(Level 3)
				Identical
				Assets
				(Level 1)
	Warrant liability	$	17,439	$	—		$	—	$	17,439
	Securities	$	5,250	$	—		$	—	$	5,250
		September 27, 2013
		Fair		Active			Observable		Unobservable
		Value		Markets			Inputs		Inputs
				for			(Level 2)		(Level 3)
				Identical
				Assets
				(Level 1)
	Warrant liability	$	11,873	$	—		$	—	$	11,873
	The changes in financial instruments with inputs classified within Level 3 of the fair value hierarchy consist of the following (in thousands):
		Three Months Ended July 4, 2014
		April 4,		Net Realized/			Purchases		Sales and			Transfers in		July 4,
		2014		Unrealized			and		Settlements			and/or (out)		2014
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Warrant liability	$	14,657	$	2,782		$	—	$	—		$	—	$	17,439
	Securities	$	250	$	—		$	5,000	$	—		$	—	$	5,250
		Three Months Ended June 28, 2013
		March 29,		Net Realized/			Purchases		Sales and			Transfers in		June 28,
		2013		Unrealized			and		Settlements			and/or (out)		2013
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Warrant liability	$	10,656	$	(1,060	)	$	—	$	—		$	—	$	9,596
		Nine Months Ended July 4, 2014
		September 27,		Net Realized/			Purchases		Sales and			Transfers in		July 4,
		2013		Unrealized			and		Settlements			and/or (out)		2014
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Warrant liability	$	11,873	$	5,566		$	—	$	—		$	—	$	17,439
	Securities	$	—	$	—		$	5,250	$	—		$	—	$	5,250
		Nine Months Ended June 28, 2013
		September 28,		Net Realized/			Purchases		Sales and			Transfers in		June 28,
		2012		Unrealized			and		Settlements			and/or (out)		2013
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Contingent consideration	$	6,580	$	(577	)	$	—	$	(6,003	)	$	—	$	—
	Warrant liability	$	7,561	$	2,035		$	—	$	—		$	—	$	9,596
	As of July 4, 2014, 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 expected life of 6.5 years, expected volatility of 42.4% and risk free rate of 2.2%. As of July 4, 2014, the fair value of the securities have been estimated to approximate cost.
	These estimates include significant judgments about potential future liquidity events and actual results could differ and could have an impact upon the values of the recorded financial instruments. Any changes in the estimated fair values of the financial instruments in the future will be reflected in the Company’s earnings and such changes could be material.

Inventories

Inventories	9 Months Ended
	Jul. 04, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	4. INVENTORIES
	Inventories consist of the following (in thousands):
		July 4,		September 27,
		2014		2013
	Raw materials	$	34,133	$	27,855
	Work-in-process		6,486		6,021
	Finished goods		29,304		21,032
	Total	$	69,923	$	54,908

Property_and_Equipment

Property and Equipment	9 Months Ended
	Jul. 04, 2014
Property Plant And Equipment [Abstract]	'
Property and Equipment	'
	5. PROPERTY AND EQUIPMENT
	Property and equipment consists of the following (in thousands):
		July 4,			September 27,
		2014			2013
	Machinery and equipment	$	65,388		$	48,050
	Leasehold improvements		7,998			5,129
	Furniture and fixtures		1,017			782
	Construction in process		10,804			6,234
	Computer equipment and software		7,758			6,384
	Total property and equipment		92,965			66,579
	Less accumulated depreciation and amortization		(44,105	)		(33,844	)
	Property and equipment — net	$	48,860		$	32,735
	Depreciation and amortization expense related to property and equipment for the three and nine months ended July 4, 2014 was $3.7 million and $10.8 million, respectively. Depreciation and amortization expense related to property and equipment for the three and nine months ended June 28, 2013 was $2.6 million and $7.9 million, respectively.

Debt

Debt	9 Months Ended
	Jul. 04, 2014
Debt Disclosure [Abstract]	'
Debt	'
	6. DEBT
	On September 26, 2013, and as amended November 5, 2013, the Company entered into an amended and restated loan agreement with a syndicate of lenders, which provided for a revolving credit facility of up to $300.0 million that was due to mature in September 2018 (Prior Facility). Borrowings under the revolving credit facility either bore a variable interest rate equal to (i) the greater of the lender’s prime rate, the federal funds effective rate plus 0.5%, or an adjusted LIBOR plus 1.0%, in each case plus either an additional 1.00%, 1.25% or 1.50%, subject to certain conditions, or (ii) an adjusted LIBOR rate plus either 2.00%, 2.25% or 2.50%, subject to certain conditions. The revolving credit facility was secured by a first priority lien on substantially all of the Company’s assets and required compliance with certain financial and non-financial covenants. In connection with the Mindspeed and Nitronex acquisitions, MACOM drew down an aggregate of $245.0 million of indebtedness on its revolving credit facility.
	On May 8, 2014, the Company refinanced its outstanding indebtedness under the Prior Facility and discharged its obligations thereunder by entering into a credit agreement (Credit Agreement) with Goldman Sachs Bank USA and a syndicate of lenders. Concurrent with the execution of the Credit Agreement, the Company terminated the Prior Facility and repaid the outstanding $245.0 million principal and interest due. The 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 up to $100.0 million, which matures in May 2019 (Revolving Facility). The Term Loans were issued with an original issue discount of 0.75%, which is being amortized over the term of the Term Loans using the straight-line method, which approximates the effective interest rate method. Borrowings under the Term Loans bear interest (payable quarterly) at: (i) for LIBOR loans, a rate per annum equal to the LIBOR rate (subject to a floor of 0.75%), plus an applicable margin of 3.75%, and (ii) for base rate loans, a rate per annum equal to the prime rate (subject to a floor of 1.75%), plus an applicable margin of 2.75%. Borrowings under the Revolving Facility bear interest (payable quarterly) at (i) for LIBOR loans, a rate per annum equal to the LIBOR rate, plus an applicable margin in the range of 2.00% to 2.50% (based on the Company’s total net leverage ratio being within certain defined ranges), and (ii) for base rate loans, a rate per annum equal to the prime rate, plus an applicable margin in the range of 1.00% to 1.50% (based on the Company’s total net leverage ratio being within certain defined ranges). The Company also pays a quarterly unused line fee for the Revolving Facility in the range of 0.25% to 0.375% (based on the Company’s total net leverage ratio being within certain defined ranges) as well as overall agency fees. The Term Loans are payable in quarterly principal installments of 0.25% of the Term Loans on the last business day of each calendar quarter, beginning on the last business day of September 2014, with the remainder due on the maturity date. At the signing of the Credit Agreement, the entire $350 million principal amount of the Term Loans was funded, and no draws were made on the Revolving Facility through July 4, 2014. The Term Loans and Revolving Facility are secured by a first priority lien on substantially all of the Company’s assets and provide that the Company must comply with certain financial and non-financial covenants. Upon terminating the Prior Facility, previously deferred financing costs pertaining to that facility of $2.1 million were expensed as additional interest.
	As of July 4, 2014, the following remained outstanding on the Term Loans:
	Principal balance	$	350,000
	Unamortized discount		(2,562	)
			347,438
	Current portion		3,500
	Long-term, less current portion	$	343,938
	As of July 4, 2014, the minimum principal payments under the Term Loans in future fiscal years was as follows (in thousands):
	2014 (rest of fiscal year)	$	875
	2015		3,478
	2016		3,444
	2017		3,409
	2018		3,375
	Thereafter		335,419
	Total	$	350,000
	As of July 4, 2014, the Company had an outstanding note payable to a financial institution, which was assumed in the Mindspeed Acquisition and accrues interest at a rate of 6.5% per annum. The note is payable at $4.5 million upon demand by the holder at any time and, if not paid earlier, becomes due in June 2017. This note payable amount of $4.5 million is included in the current portion of long-term debt in the accompanying condensed consolidated balance sheet as of July 4, 2014.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	9 Months Ended
	Jul. 04, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	7. GOODWILL AND INTANGIBLE ASSETS
	Amortization expense related to intangible assets is as follows (in thousands):
		Three Months Ended						Nine Months Ended
		July 4,			June 28,			July 4,		June 28,
		2014			2013			2014		2013
	Cost of revenue	$	6,270		$	745		$	14,292	$	2,235
	Selling, general and administrative		505			334			1,374		1,002
	Total	$	6,775		$	1,079		$	15,666	$	3,237
	Intangible assets consist of the following (in thousands):
		July 4,			September 27,
		2014			2013
	Acquired technology	$	141,877		$	23,637
	Customer relationships		26,070			13,150
	In-process research and development		21,580			—
	Trade name		3,400			3,400
	Total		192,927			40,187
	Less accumulated amortization		(30,433	)		(15,389	)
	Intangible assets — net	$	162,494		$	24,798
	A summary of the activity in intangible assets and goodwill follows (in thousands):
		Total			Acquired			Customer		In-Process		Trade		Goodwill
					Technology			Relationships		Research and		Name
										Development
	Balance at September 27, 2013	$	46,937		$	23,637		$	13,150	$	—	$	3,400	$	6,750
	Mindspeed Acquisition		162,495			121,283			12,920		21,580		—		6,712
	Other intangibles purchased		3,810			3,810			—		—		—		—
	Disposal upon sale of assets		(6,853	)		(6,853	)
	Balance at July 4, 2014	$	206,389		$	141,877		$	26,070	$	21,580	$	3,400	$	13,462
	The trade name and in-process research and development (IPR&D) are indefinite-lived intangible assets. During 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 the Company’s policy for long-lived assets.
	Accumulated amortization for the acquired technology and customer relationships was $23.2 million and $7.2 million, respectively, as of July 4, 2014, and $9.6 million and $5.8 million, respectively, as of September 27, 2013.
	As of July 4, 2014, estimated amortization of the intangible assets in future fiscal years, subject to the completion of the purchase price allocation for the Mindspeed Acquisition, was as follows (in thousands):
	2014 (rest of fiscal year)	$	6,589
	2015		25,503
	2016		23,338
	2017		21,513
	2018		18,316
	Thereafter		42,255
	Total	$	137,514

Stockholders_Equity

Stockholder's Equity	9 Months Ended
	Jul. 04, 2014
Equity [Abstract]	'
Stockholder's Equity	'
	8. STOCKHOLDER’S EQUITY
	The Company has authorized 10 million shares of $0.001 par value preferred stock and 300 million shares of $0.001 par value common stock as of July 4, 2014.
	Outstanding shares of our common stock as of July 4, 2014 and September 27, 2013, presented in the accompanying consolidated statements of stockholders’ equity exclude 81,000 and 74,000 unvested shares of restricted common stock, respectively, issued as compensation to employees that remained subject to forfeiture.

Income_Loss_Per_Share

Income (Loss) Per Share	9 Months Ended
	Jul. 04, 2014
Earnings Per Share [Abstract]	'
Income (Loss) Per Share	'
	9. INCOME (LOSS) PER SHARE
	Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net income per share is computed using the weighted-average number of common shares and, if dilutive, potential common shares outstanding during the period. The Company’s potential dilutive common shares consist of common shares issuable upon the exercise of warrants, stock options and vesting of restricted stock units. The dilutive effect of outstanding stock options is reflected in diluted earnings per share by application of the treasury stock method.
	The following table sets forth the computation for basic and diluted net income per share of common stock (in thousands, except per share data):
		Three Months Ended				Nine Months Ended
		July 4,		June 28,		July 4,			June 28,
		2014		2013		2014			2013
	Numerator:
	Net income (loss)	$	1,183	$	6,980	$	(29,860	)	$	16,456
	Denominator:
	Weighted average common shares outstanding-basic		47,280		46,066		46,856			45,788
	Dilutive effect of options, restricted stock and warrants		1,244		1,155		—			1,248
	Weighted average common shares outstanding-diluted		48,524		47,221		46,856			47,036
	Common stock income (loss) per share:
	Basic	$	0.03	$	0.15	$	(0.64	)	$	0.36
	Diluted	$	0.02	$	0.15	$	(0.64	)	$	0.35
	The table above excludes the effects of 1,349 potential shares of common stock issuable upon exercise of stock options, restricted stock, and warrants for the nine months ended July 4, 2014, as the inclusion of which would be antidilutive.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Jul. 04, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	10. COMMITMENTS AND CONTINGENCIES
	Purchase Commitments—As of July 4, 2014 and September 27, 2013, the Company had outstanding non-cancelable purchase commitments aggregating $5.0 million and $4.4 million, respectively, pursuant to inventory supply arrangements. The Company has a long-term technology licensing and transfer commitment that calls for remaining potential payments by the Company of up to $5.3 million through July 2016.
	Litigation—The Company is periodically subject to legal proceedings, claims and contingencies arising in the ordinary course of business.
	CSR Matter. In January 2013, CSR Technology Inc. (“CSR”) filed a complaint against the Company in the Massachusetts Superior Court for Suffolk County alleging breach of contract, breach of the implied covenant of good faith and fair dealing, misrepresentation, deceptive business practices, and unfair competition, all relating to the Company’s purported failure to honor an alleged minimum purchase commitment contract with respect to certain semiconductor chips to be supplied by CSR for use in the Company’s automotive module product. The complaint claimed alleged damages of $2.2 million and asked for attorney’s fees and other remedies. The Company filed an answer to the complaint on January 28, 2013. The parties have concluded fact discovery and CSR has filed a motion for summary judgment, which the Company opposed. The case was subsequently resolved in principle between the parties before CSR’s summary judgment motion was considered by the Court. As a result, the case is in process to be dismissed based on a settlement and without any finding of liability or judgment against the Company.
	Mindspeed Tender Offer Litigation in Delaware and California. Following the Company’s November 2013 announcement of the execution of a definitive agreement between the Company and Mindspeed Technologies, Inc. (“Mindspeed”) contemplating a tender offer by the Company for all outstanding shares of common stock of Mindspeed and thereafter a merger with Mindspeed (“Merger”), a number of purported class action lawsuits were filed against Mindspeed, its directors, the Company’s merger subsidiary and the Company in the Delaware Court of Chancery and the California Superior Court for Orange County.
	The complaints alleged, generally, that the Mindspeed director defendants breached their fiduciary duties to Mindspeed stockholders, and that the other defendants aided and abetted such breaches, by seeking to sell Mindspeed through an allegedly defective process, for an unfair price, and on unfair terms. The lawsuits sought, among other things, equitable relief that would enjoin the consummation of the proposed Merger, rescission of the proposed Merger (to the extent the proposed Merger has already been consummated), damages, and attorneys’ fees and costs.
	Further Discussion of Delaware Tender Offer Litigation. On November 22, 2013, an amended complaint was filed in the Delaware Court of Chancery. The amended complaint included similar allegations to the original complaint, along with claims that the Mindspeed Schedule 14D-9 filed in connection with the Merger included misstatements or omissions of material facts. On November 25, 2013, a motion for preliminary injunction was filed in the Delaware Court of Chancery in the Hoffman Action. On December 3, 2013, all of the complaints filed in the Delaware Court of Chancery were consolidated (the “Delaware Actions”).
	On December 6, 2013, the plaintiffs in the Delaware Actions filed their brief in support of a motion to enjoin the proposed Merger. While the Defendants denied the allegations made in the lawsuits and maintain that they have committed no wrongdoing whatsoever, to permit the timely consummation of the Merger, and without admitting the validity of any allegations made in the lawsuits, the Defendants concluded that it was desirable that the Delaware Actions be resolved.
	On December 9, 2013, the Defendants’ and plaintiffs’ counsel in the Delaware Actions entered into a memorandum of understanding to settle the Delaware Actions and to resolve all allegations which were brought or could have been brought by the purported class of Mindspeed shareholder plaintiffs. The proposed settlement, which is subject to confirmatory discovery and court approval, provides for the release of all claims against the Defendants relating to the proposed Merger. In connection with the settlement, Mindspeed agreed to provide additional supplemental disclosures concerning the tender offer as reflected in Amendment No. 3 to the Schedule 14D-9 filed with the SEC on December 10, 2013, which supplement the information provided in the Schedule 14D-9. There can be no assurance that the settlement will be finalized or that the Delaware Court of Chancery will approve the settlement. After the parties entered into the memorandum of understanding, the motion for a preliminary injunction was withdrawn and the hearing vacated in the Delaware Actions. The Merger closed on December 18, 2013. The parties submitted final settlement papers to the Delaware Court of Chancery, which ordered that notice of the settlement be issued to class members and scheduled a hearing for September 23, 2014, to consider the settlement. The parties also agreed on an attorneys’ fee payable to the plaintiffs’ counsel of up to $425,000, subject to the approval of the Delaware Court of Chancery.
	Further Discussion of California Tender Offer Litigation. On December 5, 2013, an amended complaint was filed in one of the California actions. The amended complaint includes similar allegations to the original complaint along with claims that the Mindspeed Schedule 14D-9 filed in connection with the Merger included misstatements or omissions of material facts. On December 5, 2013, the plaintiffs filed an ex parte application for an order shortening time in which to bring a motion for expedited discovery, which was denied on December 6, 2013.
	On December 30, 2013, the California Court entered an Initial Case Management Order. Among other things, the Initial Case Management Order set an Initial Case Management Conference for February 4, 2014 and stayed all discovery and motion practice until that date. On January 6, 2014, the Defendants filed notices of special appearance and intent to file, or join in, a motion to stay or dismiss the amended complaint. The Case Management Conference has been continued until October 14, 2014. The Company intends to continue to defend the lawsuit vigorously.
	Patent Suit Against Laird. The Company brought a patent infringement suit against Laird Technologies, Inc. (“Laird”) in the Federal District Court for the District of Delaware on February 11, 2014, seeking monetary damages and a permanent injunction. The suit alleges that Laird infringes on the Company’s United States Patent No. 6,272,349 (“the ‘349 Patent”), titled “Integrated Global Positioning System Receiver”, by making, using, selling, offering to sell, or selling products incorporating an integrated global positioning receiver that include structure(s) recited in the ‘349 Patent, including global positioning system modules for automotive industry customers. On April 15, 2014, the Company filed an amended complaint adding claims for misappropriation of trade secrets, unjust enrichment, and unfair competition. After an unsuccessful motion to dismiss these additional claims, Laird filed an answer and declaratory judgment claims of invalidity and noninfringement on June 30, 2014. The Company filed a reply to the counterclaims on July 24, 2014.
	The Company filed a motion for preliminary injunction, seeking to enjoin Laird’s infringement pending full trial on the merits. The court granted the motion for a preliminary injunction on June 13, 2014. In doing so, the court found that the Company is likely to succeed on the merits of its case at a full trial and that the equities weighed in favor of preliminarily enjoining Laird from making sales of its product until trial. Trial is scheduled to begin on May 16, 2016.
	The Company intends to continue to pursue and defend the aforementioned lawsuits vigorously and does not expect that the ultimate cost to resolve these cases will have a material effect on the consolidated financial statements.

Restructurings

Restructurings	9 Months Ended
	Jul. 04, 2014
Restructuring And Related Activities [Abstract]	'
Restructurings	'
	11. RESTRUCTURINGS
	The Company has periodically implemented restructuring actions in connection with broader plans to reduce staffing, reduce its internal manufacturing footprint and, generally, reduce operating costs. The restructuring expenses are comprised of direct and incremental costs related to change-in-control obligations of $10.2 million, severance and outplacement fees for the terminated employees. The following is a summary of the costs incurred and remaining balances included in accrued expenses related to restructuring actions taken (in thousands):
	Balance-September 27, 2013	$	145
	Current period charges - continuing operations		15,725
	Payments		(8,169	)
	Balance-July 4, 2014	$	7,701
	In the nine months ended July 4, 2014, the Company implemented restructuring plans to reduce manufacturing and operating costs of the Mindspeed and Nitronex operations through a reduction of staffing. These restructuring plans resulted in a charge to continuing operations in the nine months ended July 4, 2014 and the related obligations are expected to be paid through the first quarter of fiscal year 2015.

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Jul. 04, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Share-Based Compensation	'
	12. SHARE-BASED COMPENSATION
	The following table presents the effects of share-based compensation expense related to share-based awards to employees and non-employees in the Company’s condensed consolidated statements of operations during the periods presented (in thousands):
		Three Months Ended					Nine Months Ended
		July 4,			June 28,		July 4,		June 28,
		2014			2013		2014		2013
	Cost of revenue	$	646		$	243	$	1,355	$	852
	Research and development		893			421		2,105		1,277
	Selling, general and administrative		1,851			756		5,065		2,597
	Total stock-based compensation expense	$	3,390		$	1,420	$	8,525	$	4,726
	Effective September 28, 2013, pursuant to an “evergreen” provision, the number of shares of common stock available for issuance under the 2012 Omnibus Incentive Plan (2012 Plan) and the 2012 Employee Stock Purchase Plan (ESPP) were increased by 1.9 million shares and 0.6 million shares, respectively. As of July 4, 2014, MACOM had 10.0 million shares available for future grants under the 2012 Plan.
	Stock option activity for the nine months ended July 4, 2014, is as follows (in thousands, except per share amounts):
		Number of			Weighted-		Weighted-		Aggregate
		Shares			Average		Average		Intrinsic
					Exercise Price		Remaining		Value
					Per Share		Contractual
							Term
							(in years)
	Outstanding-September 27, 2013		841		$	1.6		6.2	$	13,131
	Assumed in Mindspeed Acquisition		439			24.5
	Granted		405			17.5
	Exercised		(446	)		4.4
	Forfeited, canceled or expired		(179	)		28.39
	Outstanding-July 4, 2014		1,060		$	11.5		6.9	$	12,667
	Options vested and expected to vest as of July 4, 2014		1,060		$	11.5		6.9	$	12,667
	Options vested and exercisable as of July 4, 2014		621		$	7.85		5.1	$	9,925
	Aggregate intrinsic value represents the difference between the Company’s closing stock price on July 4, 2014, and the exercise price of outstanding, in-the-money options. The total intrinsic value of options exercised was $6.3 million for the nine months ended July 4, 2014. As of July 4, 2014, total unrecognized compensation cost, excluding the impact of the assumed Mindspeed stock options, adjusted for estimated forfeitures, related to unvested stock options was $2.9 million, which is expected to be recognized over the next 3.0 years.
	In April 2014, the Company granted stock options as to 405,000 shares of common stock with a grant date fair value of $3.4 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 ten years of the grant date. These options are included in the table and other information above.
	A summary of restricted stock and restricted stock units’ activity for the nine months ended July 4, 2014, is as follows (in thousands):
		Number of			Weighted-		Aggregate
		Shares			Average		Intrinsic
					Remaining		Value
					Contractual
					Term
					(in years)
	Unvested-September 27, 2013		1,129			2.9	$	18,148
	Assumed in Mindspeed Acquisition		285
	Granted		951
	Vested and released		(514	)
	Forfeited, canceled or expired		(143	)
	Issued and unvested-July 4, 2014		1,708			2.8	$	34,422
	Shares expected to vest-July 4, 2014		1,489			2.8	$	30,003
	The total intrinsic value of restricted stock awards vesting was $8.9 million for the nine months ended July 4, 2014. As of July 4, 2014, total unrecognized compensation cost, excluding the impact of the assumed Mindspeed stock awards, adjusted for estimated forfeitures, related to restricted stock and units was $19.9 million, which is expected to be recognized over the next 2.8 years.
	As of July 4, 2014, total unrecognized compensation cost related to the ESPP was not material.
	Certain of the share-based awards granted and outstanding as of July 4, 2014, are subject to accelerated vesting upon a sale of the Company or similar changes in control.
	There were no material modifications to stock-based awards during the periods presented.

Income_Taxes

Income Taxes	9 Months Ended
	Jul. 04, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	13. INCOME TAXES
	The Company is subject to income tax in the United States as well as other tax jurisdictions in which it conducts 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, the Company records 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 the Company’s effective income tax rates for the three and nine months ended July 4, 2014 and June 28, 2013, was primarily impacted in both periods by changes in fair values of the common stock warrant liability which is not deductible nor taxable for tax purposes, income taxed in foreign jurisdictions at generally lower tax rates, offset by U.S. state income taxes, and, for the three and nine months ended July 4, 2014, by nondeductible expenses for tax purposes resulting from the Mindspeed Acquisition.
	At the closing of the Mindspeed Acquisition, Mindspeed had, on a preliminary basis, federal net operating loss (NOL) carryforwards of approximately $683.7 million, which will expire at various dates through 2033, and federal research and development tax credit carryforwards of $19.5 million. Both the NOL and the tax credits are subject to change-in-control limitations within the Internal Revenue Code and, accordingly, these carryforwards were reduced to $305.9 million, the estimated realizable amount after consideration of the limitations. The NOL carryforwards and tax credits are included in the computation of net deferred income tax assets arising from the Mindspeed Acquisition. The aggregate net deferred income tax assets acquired in the Mindspeed Acquisition is estimated to be $84.3 million, which includes a net deferred income tax liability of $68.0 million related to the difference between the book and tax bases of the intangible and other assets acquired in the acquisition. A valuation allowance of $16.8 million was also recorded to reduce the overall net deferred tax assets to estimated realizable value.
	The tax effect of the difference between the book and tax bases in the net assets acquired in the Nitronex Acquisition of $6.2 million has been recorded as an increase to additional paid-in capital in the nine months ended July 4, 2014.

Related_Party_Transactions

Related Party Transactions	9 Months Ended
	Jul. 04, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	14. RELATED PARTY TRANSACTIONS
	GaAs Labs, a stockholder and an affiliate of directors and majority stockholders John and Susan Ocampo, engaged the Company to provide administrative and business development services provided 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. For the nine months ended July 4, 2014, the Company billed GaAs Labs $118,000 and for the three and nine months ended June 28, 2013, the Company billed GaAs Labs $123,000 and $293,000, respectively, for services provided pursuant to this agreement and has recorded these amounts as other income in the accompanying condensed consolidated statements of operations.
	In the three and nine months ended July 4, 2014, the Company recorded revenue of $65,000 from sales of product to a privately-held company with a common director. In the three and nine months ended June 28, 2013, the Company recorded revenue of $242,000 and $345,000, respectively, from sales of product to this customer.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	9 Months Ended
	Jul. 04, 2014
Supplemental Cash Flow Elements [Abstract]	'
Supplemental Cash Flow Information	'
	15. SUPPLEMENTAL CASH FLOW INFORMATION
	As of July 4, 2014 and June 28, 2013, the Company had $0.7 million and $0.8 million, respectively, in unpaid amounts related to purchases of property and equipment included in accounts payable and accrued liabilities. 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.
	Upon closing the Mindspeed Acquisition, MACOM assumed $39.8 million of the seller’s indebtedness, $35.0 million of which was paid in the nine months ended July 4, 2014.

Geographic_and_Significant_Cus

Geographic and Significant Customer Information	9 Months Ended
	Jul. 04, 2014
Segment Reporting [Abstract]	'
Geographic and Significant Customer Information	'
	16. GEOGRAPHIC AND SIGNIFICANT CUSTOMER INFORMATION
	Information about the Company’s operations in different geographic regions, based upon customer locations, is presented below (in thousands):
			Three Months Ended						Nine Months Ended
	Revenue by Geographic Region		July 4,			June 28,			July 4,			June 28,
			2014			2013			2014			2013
	United States		$	52,127		$	48,010		$	156,931		$	140,627
	International (1)			60,237			35,467			147,414			97,769
	Total		$	112,364		$	83,477		$	304,345		$	238,396
			As of
	Long-Lived Assets by Geographic Region		July 4,			September 27,
			2014			2013
	United States		$	40,027		$	26,226
	International (2)			8,833			6,509
	Total		$	48,860		$	32,735
	-1	No international countries represented greater than 10% of total revenue during the periods presented.
	-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 that represented 12% of total long-lived assets as of July 4, 2014 and September 27, 2013.
	The following is a summary of customer concentrations equal to or greater than 10% as a percentage of total sales and accounts receivable as of and for the periods presented:
			Three Months Ended						Nine Months Ended
	Revenue		July 4,			June 28,			July 4,			June 28,
			2014			2013			2014			2013
	Customer A			12	%		15	%		16	%		16	%
	Customer B			17	%		25	%		19	%		25	%
	Customer C			11	%		—	%		—	%		—	%
			As of
	Accounts Receivable		July 4,			September 27,
			2014			2013
	Customer A			15	%		18	%
	Customer B			14	%		21	%
	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 months ended July 4, 2014 and June 28, 2013, ten customers represented 61% and 59% of total revenue, respectively. For the nine months ended July 4, 2014 and June 28, 2013, ten customers represented 61% and 60% of total revenue, respectively.

Description_of_Business_Basis_1

Description of Business, Basis of Presentation and Accounting (Policies)	9 Months Ended
	Jul. 04, 2014
Accounting Policies [Abstract]	'
Description of Business	'
	Description of Business—M/A-COM Technology Solutions Holdings, Inc. (MACOM or the Company) was incorporated in Delaware on March 25, 2009. MACOM is a provider of high-performance analog semiconductor solutions for use in wireless and wireline applications across the radio frequency (RF), microwave and millimeterwave spectrum and in high speed communications. Headquartered in Lowell, Massachusetts, MACOM has offices in North America, Europe, Asia and Australia.
	The Company has one reportable operating segment which designs, develops, manufactures and markets semiconductors and modules.
Basis of Presentation	'
	Basis of Presentation—The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations.
	The Company’s fiscal year ends on the Friday closest to September 30. For fiscal years in which there are 53 weeks, the first quarter reporting period includes 14 weeks. Fiscal year 2013 was 52 weeks in length. Fiscal year 2014 is 53 weeks in length and the three and nine months ended July 4, 2014 include 13 and 40 weeks, respectively.
	MACOM acquired Nitronex, LLC (Nitronex) in connection with a common-control business combination on February 13, 2014 (Nitronex Acquisition). Nitronex, a supplier of high-performance gallium nitride (GaN) semiconductors for RF, microwave, and millimeterwave applications, was previously acquired by GaAs Labs, LLC (GaAs Labs) on June 25, 2012. GaAs Labs is a stockholder in MACOM and GaAs Labs, Nitronex and MACOM were under common control from June 25, 2012 through February 13, 2014 due to a common controlling stockholder. The accompanying condensed financial statements for the nine months ended July 4, 2014 and three and nine months ended June 28, 2013 combine MACOM’s historical consolidated financial statements with the historical financial statements of Nitronex from June 25, 2012 through February 13, 2014, and have been presented in a manner similar to a pooling-of-interests to include the results of operations of each business since the date of common control. Since February 13, 2014, the results of Nitronex are included with those of MACOM on a consolidated basis. The accompanying combined, condensed, and consolidated financial statements are referred to as “consolidated” for all periods presented.
	These consolidated financial statements should be read in conjunction with the Company’s combined consolidated financial statements and notes as of September 27, 2013 and September 28, 2012, and for each of the three years in the period ended September 27, 2013 included in the Company’s Current Report on Form 8-K filed with the SEC on July 3, 2014, which financial statements were reissued to include the historical financial results and financial position of Nitronex since June 25, 2012.
	In the opinion of management, the accompanying unaudited consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year 2014. The condensed consolidated financial statements include the Company and its wholly-owned subsidiaries. All material intercompany balances and transactions have been eliminated.
Use of Estimates	'
	Use of Estimates—The preparation of consolidated financial statements in conformity with GAAP 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, the Company bases 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. The accounting policies which our management believes involve the most significant application of judgment, or involve complex estimation include revenue recognition, inventory, warranty obligations, share-based compensation, income taxes, fair value measurements related to purchase accounting, and stock warrant liabilities. Actual results could differ from estimates, and material effects on our operating results and financial position may result.
Revenue Recognition	'
	Revenue Recognition—Revenue from the sale of products is recognized when persuasive evidence of an arrangement exists, delivery has occurred, the price to the buyer is fixed or determinable, and collectability is reasonably assured. Provided other revenue recognition criteria are met, product revenue is recognized upon transfer of title and risk of loss, which is generally upon shipment. The Company has distribution agreements that provide distributors with rights to return certain products and price protection on certain products. Generally, revenue is recognized upon delivery of products, providing all other criteria is met. When rights of return exist, the Company will provide a reserve for estimated returns at the time of product delivery. When the Company is unable to estimate the amount of its products that may be returned by such distributors or the ultimate sales price of products sold to such distributors, revenue is recognized when the distributors have sold the products to third-party customers, at which point the return rights and any price protection feature lapse. Accordingly, in this circumstance, the Company defers the recognition of revenue until the products are sold by the distributors to third-party customers and the Company defers both the revenue recognition and related cost of revenue on these products by recording the revenue as deferred revenue and the associated cost remains recorded in inventory in the accompanying consolidated balance sheets. When these products are sold to a distributor’s customers, the Company recognizes the revenue and associated cost of revenue. Shipping and handling fees billed to customers are recorded as revenue while the related costs are classified as a component of costs of revenue. The Company provides warranties for its products and accrues the estimated costs of warranty claims in the period the related revenue is recorded.
Recent Accounting Standards	'
	Recent Accounting Standards—Under the Jumpstart Our Business Startups Act (JOBS Act), the Company meets the definition of an emerging growth company. The Company has elected to avail itself of the extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act.
	In April 2014, the FASB issued Accounting Standards Update 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), which raises the threshold for disposals to qualify as discontinued operations. A discontinued operation is defined as: (1) a component of an entity or group of components that has been disposed of or classified as held for sale and represents a strategic shift that has or will have a major effect on an entity’s operations and financial results; or (2) an acquired business that is classified as held for sale on the acquisition date. ASU 2014-08 also requires additional disclosures regarding discontinued operations, as well as material disposals that do not meet the definition of discontinued operations. The application of this guidance is prospective from the date of adoption and applies only to disposals (or new classifications to held for sale) that have not been reported as discontinued operations in our previously issued financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. ASU 2014-09 requires revenue recognition to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 sets forth a new revenue recognition model that requires identifying the contract, identifying the performance obligations, determining the transaction price, allocating the transaction price to performance obligations and recognizing the revenue upon satisfaction of performance obligations. The amendments in the ASU can be applied either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying the update recognized at the date of the initial application along with additional disclosures. The Company is currently evaluating the impact of ASU 2014-09, which is effective for the Company in our fiscal year beginning on September 30, 2017.

Acquisitions_Tables

Acquisitions (Tables)	9 Months Ended
	Jul. 04, 2014
Business Combinations [Abstract]	'
Schedule of Aggregate Purchase Price Allocated to Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed	'
	The aggregate purchase price for Mindspeed 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. A preliminary allocation follows (in thousands):
	Current assets	$	51,801
	Intangible assets		155,783
	Other assets		98,902
	Total assets acquired		306,486
	Current liabilities		34,966
	Debt		39,824
	Other liabilities		5,595
	Total liabilities assumed		80,385
	Net assets acquired		226,101
	Consideration:
	Cash paid upon closing, net of cash acquired		232,028
	Fair value of vested awards assumed in acquisition		785
	Total consideration		232,813
	Goodwill	$	6,712
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	$	121,283		7
	Customer relationships		12,920		10
	In-process research and development		21,580		N/A
		$	155,783
Summary of Revenue and Earnings	'
	The following is a summary of Mindspeed revenue and earnings, excluding a restructuring charge and change-in-control payments aggregating $14.9 million, included in MACOM’s accompanying condensed consolidated statements of operations for the nine months ended July 4, 2014 (in thousands):
	Revenue	$	64,765
	Loss from continuing operations before income taxes		(18,534	)
Condensed Consolidated Statement of Operations Related to Divested Business	'
	The accompanying condensed consolidated statement of operations for the nine months ended July 4, 2014, include the following operating results related to the business to be divested (in thousands):
	Revenue	$	2,440
	Loss before income taxes		(7,381	)
	Benefit for income taxes		2,776
	Loss from discontinued operations, net		(4,605	)
Summary of Supplemental Pro Forma Data	'
	This pro forma data is presented for informational purposes only and does not purport to be indicative of the Company’s future results of operations.
	Revenue	$	323,801
	Net loss		(27,051	)

Financial_Instruments_Tables

Financial Instruments (Tables)	9 Months Ended
	Jul. 04, 2014
Fair Value Disclosures [Abstract]	'
Financial Instruments Measured at Fair Value on Recurring Basis	'
	Financial instruments measured at fair value on a recurring basis consist of the following (in thousands):
		July 4, 2014
		Fair		Active			Observable		Unobservable
		Value		Markets			Inputs		Inputs
				for			(Level 2)		(Level 3)
				Identical
				Assets
				(Level 1)
	Warrant liability	$	17,439	$	—		$	—	$	17,439
	Securities	$	5,250	$	—		$	—	$	5,250
		September 27, 2013
		Fair		Active			Observable		Unobservable
		Value		Markets			Inputs		Inputs
				for			(Level 2)		(Level 3)
				Identical
				Assets
				(Level 1)
	Warrant liability	$	11,873	$	—		$	—	$	11,873
Changes in Financial Instruments with Inputs Classified within Level 3 of Fair Value	'
	The changes in financial instruments with inputs classified within Level 3 of the fair value hierarchy consist of the following (in thousands):
		Three Months Ended July 4, 2014
		April 4,		Net Realized/			Purchases		Sales and			Transfers in		July 4,
		2014		Unrealized			and		Settlements			and/or (out)		2014
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Warrant liability	$	14,657	$	2,782		$	—	$	—		$	—	$	17,439
	Securities	$	250	$	—		$	5,000	$	—		$	—	$	5,250
		Three Months Ended June 28, 2013
		March 29,		Net Realized/			Purchases		Sales and			Transfers in		June 28,
		2013		Unrealized			and		Settlements			and/or (out)		2013
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Warrant liability	$	10,656	$	(1,060	)	$	—	$	—		$	—	$	9,596
		Nine Months Ended July 4, 2014
		September 27,		Net Realized/			Purchases		Sales and			Transfers in		July 4,
		2013		Unrealized			and		Settlements			and/or (out)		2014
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Warrant liability	$	11,873	$	5,566		$	—	$	—		$	—	$	17,439
	Securities	$	—	$	—		$	5,250	$	—		$	—	$	5,250
		Nine Months Ended June 28, 2013
		September 28,		Net Realized/			Purchases		Sales and			Transfers in		June 28,
		2012		Unrealized			and		Settlements			and/or (out)		2013
				Losses (Gains)			Issuances					of Level 3
				Included in
				Earnings
	Contingent consideration	$	6,580	$	(577	)	$	—	$	(6,003	)	$	—	$	—
	Warrant liability	$	7,561	$	2,035		$	—	$	—		$	—	$	9,596

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Jul. 04, 2014
Inventory Disclosure [Abstract]	'
Components of Inventories	'
	Inventories consist of the following (in thousands):
		July 4,		September 27,
		2014		2013
	Raw materials	$	34,133	$	27,855
	Work-in-process		6,486		6,021
	Finished goods		29,304		21,032
	Total	$	69,923	$	54,908

Property_and_Equipment_Tables

Property and Equipment (Tables)	9 Months Ended
	Jul. 04, 2014
Property Plant And Equipment [Abstract]	'
Components of Property and Equipment	'
	Property and equipment consists of the following (in thousands):
		July 4,			September 27,
		2014			2013
	Machinery and equipment	$	65,388		$	48,050
	Leasehold improvements		7,998			5,129
	Furniture and fixtures		1,017			782
	Construction in process		10,804			6,234
	Computer equipment and software		7,758			6,384
	Total property and equipment		92,965			66,579
	Less accumulated depreciation and amortization		(44,105	)		(33,844	)
	Property and equipment — net	$	48,860		$	32,735

Debt_Tables

Debt (Tables)	9 Months Ended
	Jul. 04, 2014
Debt Disclosure [Abstract]	'
Schedule of Remained Outstanding on Term Loans	'
	As of July 4, 2014, the following remained outstanding on the Term Loans:
	Principal balance	$	350,000
	Unamortized discount		(2,562	)
			347,438
	Current portion		3,500
	Long-term, less current portion	$	343,938
Schedule of Minimum Principal Payments under Term Loans	'
	As of July 4, 2014, the minimum principal payments under the Term Loans in future fiscal years was as follows (in thousands):
	2014 (rest of fiscal year)	$	875
	2015		3,478
	2016		3,444
	2017		3,409
	2018		3,375
	Thereafter		335,419
	Total	$	350,000

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Jul. 04, 2014
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						Nine Months Ended
		July 4,			June 28,			July 4,		June 28,
		2014			2013			2014		2013
	Cost of revenue	$	6,270		$	745		$	14,292	$	2,235
	Selling, general and administrative		505			334			1,374		1,002
	Total	$	6,775		$	1,079		$	15,666	$	3,237
Summary of Intangible Assets	'
	Intangible assets consist of the following (in thousands):
		July 4,			September 27,
		2014			2013
	Acquired technology	$	141,877		$	23,637
	Customer relationships		26,070			13,150
	In-process research and development		21,580			—
	Trade name		3,400			3,400
	Total		192,927			40,187
	Less accumulated amortization		(30,433	)		(15,389	)
	Intangible assets — net	$	162,494		$	24,798
Summary of Activity in Intangible Assets and Goodwill	'
	A summary of the activity in intangible assets and goodwill follows (in thousands):
		Total			Acquired			Customer		In-Process		Trade		Goodwill
					Technology			Relationships		Research and		Name
										Development
	Balance at September 27, 2013	$	46,937		$	23,637		$	13,150	$	—	$	3,400	$	6,750
	Mindspeed Acquisition		162,495			121,283			12,920		21,580		—		6,712
	Other intangibles purchased		3,810			3,810			—		—		—		—
	Disposal upon sale of assets		(6,853	)		(6,853	)
	Balance at July 4, 2014	$	206,389		$	141,877		$	26,070	$	21,580	$	3,400	$	13,462
Summary of Estimated Amortization of Intangible Assets in Future Fiscal Years	'
	As of July 4, 2014, estimated amortization of the intangible assets in future fiscal years, subject to the completion of the purchase price allocation for the Mindspeed Acquisition, was as follows (in thousands):
	2014 (rest of fiscal year)	$	6,589
	2015		25,503
	2016		23,338
	2017		21,513
	2018		18,316
	Thereafter		42,255
	Total	$	137,514

Income_Loss_Per_Share_Tables

Income (Loss) Per Share (Tables)	9 Months Ended
	Jul. 04, 2014
Earnings Per Share [Abstract]	'
Computation for Basic and Diluted Net Income Per Share of Common Stock	'
	The following table sets forth the computation for basic and diluted net income per share of common stock (in thousands, except per share data):
		Three Months Ended				Nine Months Ended
		July 4,		June 28,		July 4,			June 28,
		2014		2013		2014			2013
	Numerator:
	Net income (loss)	$	1,183	$	6,980	$	(29,860	)	$	16,456
	Denominator:
	Weighted average common shares outstanding-basic		47,280		46,066		46,856			45,788
	Dilutive effect of options, restricted stock and warrants		1,244		1,155		—			1,248
	Weighted average common shares outstanding-diluted		48,524		47,221		46,856			47,036
	Common stock income (loss) per share:
	Basic	$	0.03	$	0.15	$	(0.64	)	$	0.36
	Diluted	$	0.02	$	0.15	$	(0.64	)	$	0.35

Restructurings_Tables

Restructurings (Tables)	9 Months Ended
	Jul. 04, 2014
Restructuring And Related Activities [Abstract]	'
Summary of Costs Related to Restructuring Actions	'
	The following is a summary of the costs incurred and remaining balances included in accrued expenses related to restructuring actions taken (in thousands):
	Balance-September 27, 2013	$	145
	Current period charges - continuing operations		15,725
	Payments		(8,169	)
	Balance-July 4, 2014	$	7,701

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	9 Months Ended
	Jul. 04, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Effects of Stock-Based Compensation Expense Related to Stock-Based Awards to Employees and Non-Employees	'
	The following table presents the effects of share-based compensation expense related to share-based awards to employees and non-employees in the Company’s condensed consolidated statements of operations during the periods presented (in thousands):
		Three Months Ended					Nine Months Ended
		July 4,			June 28,		July 4,		June 28,
		2014			2013		2014		2013
	Cost of revenue	$	646		$	243	$	1,355	$	852
	Research and development		893			421		2,105		1,277
	Selling, general and administrative		1,851			756		5,065		2,597
	Total stock-based compensation expense	$	3,390		$	1,420	$	8,525	$	4,726
Summary of Stock Option Activity	'
	Stock option activity for the nine months ended July 4, 2014, is as follows (in thousands, except per share amounts):
		Number of			Weighted-		Weighted-		Aggregate
		Shares			Average		Average		Intrinsic
					Exercise Price		Remaining		Value
					Per Share		Contractual
							Term
							(in years)
	Outstanding-September 27, 2013		841		$	1.6		6.2	$	13,131
	Assumed in Mindspeed Acquisition		439			24.5
	Granted		405			17.5
	Exercised		(446	)		4.4
	Forfeited, canceled or expired		(179	)		28.39
	Outstanding-July 4, 2014		1,060		$	11.5		6.9	$	12,667
	Options vested and expected to vest as of July 4, 2014		1,060		$	11.5		6.9	$	12,667
	Options vested and exercisable as of July 4, 2014		621		$	7.85		5.1	$	9,925
Summary of Restricted Stock and Restricted Stock Units Activity	'
	A summary of restricted stock and restricted stock units’ activity for the nine months ended July 4, 2014, is as follows (in thousands):
		Number of			Weighted-		Aggregate
		Shares			Average		Intrinsic
					Remaining		Value
					Contractual
					Term
					(in years)
	Unvested-September 27, 2013		1,129			2.9	$	18,148
	Assumed in Mindspeed Acquisition		285
	Granted		951
	Vested and released		(514	)
	Forfeited, canceled or expired		(143	)
	Issued and unvested-July 4, 2014		1,708			2.8	$	34,422
	Shares expected to vest-July 4, 2014		1,489			2.8	$	30,003

Geographic_and_Significant_Cus1

Geographic and Significant Customer Information (Tables)	9 Months Ended
	Jul. 04, 2014
Segment Reporting [Abstract]	'
Summary of Different Geographic Regions	'
	Information about the Company’s operations in different geographic regions, based upon customer locations, is presented below (in thousands):
			Three Months Ended						Nine Months Ended
	Revenue by Geographic Region		July 4,			June 28,			July 4,			June 28,
			2014			2013			2014			2013
	United States		$	52,127		$	48,010		$	156,931		$	140,627
	International (1)			60,237			35,467			147,414			97,769
	Total		$	112,364		$	83,477		$	304,345		$	238,396
			As of
	Long-Lived Assets by Geographic Region		July 4,			September 27,
			2014			2013
	United States		$	40,027		$	26,226
	International (2)			8,833			6,509
	Total		$	48,860		$	32,735
	-1	No international countries represented greater than 10% of total revenue during the periods presented.
	-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 that represented 12% of total long-lived assets as of July 4, 2014 and September 27, 2013.
Summary of Customer Concentrations as Percentage of Total Sales and Accounts Receivable	'
	The following is a summary of customer concentrations equal to or greater than 10% as a percentage of total sales and accounts receivable as of and for the periods presented:
			Three Months Ended						Nine Months Ended
	Revenue		July 4,			June 28,			July 4,			June 28,
			2014			2013			2014			2013
	Customer A			12	%		15	%		16	%		16	%
	Customer B			17	%		25	%		19	%		25	%
	Customer C			11	%		—	%		—	%		—	%
			As of
	Accounts Receivable		July 4,			September 27,
			2014			2013
	Customer A			15	%		18	%
	Customer B			14	%		21	%

Description_of_Business_Basis_2

Description of Business, Basis of Presentation and Accounting - Additional Information (Detail)	1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Jul. 04, 2014	Jul. 04, 2014	Jan. 03, 2014	Jul. 04, 2014	Sep. 27, 2013
				Segment
Description Of Business And Basis Of Presentation [Line Items]	'	'	'	'	'
Number of reportable operating segment	'	'	'	1	'
Reporting period description	'Fiscal year 2014 is 53 weeks in length	'	'For fiscal years in which there are 53 weeks, the first quarter reporting period includes 14 weeks.	'	'Fiscal year 2013 was 52 weeks in length.
Number of weeks in period	'53 weeks	'13 weeks	'14 weeks	'40 weeks	'52 weeks
Nitronex LLC [Member]	'	'	'	'	'
Description Of Business And Basis Of Presentation [Line Items]	'	'	'	'	'
Date of Acquisition	'	'	'	13-Feb-14	'

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

Jun. 28, 2013

Jul. 04, 2014

Jun. 28, 2013

9-May-14

Dec. 18, 2013

Jul. 04, 2014

Dec. 18, 2013

9-May-14

Feb. 13, 2014

Jul. 04, 2014

Jun. 28, 2013

Feb. 13, 2014

Mindspeed [Member]

Mindspeed [Member]

Mindspeed [Member]

Mindspeed [Member]

Mindspeed [Member]

Nitronex LLC [Member]

Nitronex LLC [Member]

Nitronex LLC [Member]

Nitronex LLC [Member]

Through December 31, 2014 [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Date of Acquisition

'

'

'

'

'

18-Dec-13

'

'

'

13-Feb-14

'

'

Business acquisition cost of acquired entity, cash paid

'

'

'

'

'

'

'

'

$26,100,000

'

'

'

Escrow deposit

'

'

'

'

'

'

'

'

'

'

'

3,900,000

Escrow agreement expiration period

'

'

'

'

'

'

'

'

'

'2015-08

'

'

Capital contributions

'

3,200,000

6,515,000

'

'

'

'

'

'

3,200,000

6,515,000

'

Outstanding shares of common stock, par value

'

$0.00

'

'

'

'

$0.01

'

'

'

'

'

Outstanding shares of common stock at a purchase price per share

'

'

'

'

'

'

$5.05

'

'

'

'

'

Purchase price of acquisition

'

258,108,000

'

'

232,028,000

232,000,000

'

'

'

'

'

'

Liabilities and incurred costs

'

'

'

'

'

80,400,000

80,385,000

'

'

'

'

'

Business combination acquisition related costs

'

'

'

'

'

4,500,000

'

'

'

'

'

'

The fair value of the assumed options and stock awards

'

'

'

'

'

4,100,000

'

'

'

'

'

'

Stock option vested

'

'

'

'

'

800,000

'

'

'

'

'

'

Weighted-average life of identified intangible assets acquired

'

'

'

'

'

'7 years

'

'

'

'

'

'

Aggregate amount of restructuring charge and change-in-control payments

1,060,000

15,725,000

1,060,000

'

'

14,900,000

'

'

'

'

'

'

Acquisition costs of discontinued operations

'

'

'

'

'

4,500,000

'

'

'

'

'

'

Proceeds from sale of CPE communication processor product line

'

'

'

12,000,000

'

'

'

'

'

'

'

'

Potential additional proceeds upon achievement of certain revenue related milestones

'

'

'

'

'

'

'

2,000,000

'

'

'

'

Gain loss recognized on sale of CPE communication processor product line

'

'

'

$0

'

'

'

'

'

'

'

'

Acquisitions_Schedule_of_Aggre

Acquisitions - Schedule of Aggregate Purchase Price Allocated to Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed (Detail) (USD $)	9 Months Ended		0 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Sep. 27, 2013	Dec. 18, 2013	Jul. 04, 2014	Dec. 18, 2013
			Mindspeed [Member]	Mindspeed [Member]	Mindspeed [Member]
Business Acquisition [Line Items]	'	'	'	'	'
Current assets	'	'	'	'	$51,801
Intangible assets	'	'	'	'	155,783
Other assets	'	'	'	'	98,902
Total assets acquired	'	'	'	'	306,486
Current liabilities	'	'	'	'	34,966
Debt	'	'	'	'	39,824
Other liabilities	'	'	'	'	5,595
Total liabilities assumed	'	'	'	80,400	80,385
Net assets acquired	'	'	'	'	226,101
Consideration:	'	'	'	'	'
Cash paid upon closing, net of cash acquired	258,108	'	232,028	232,000	'
Fair value of vested awards assumed in acquisition	'	'	785	'	'
Total consideration	'	'	232,813	'	'
Goodwill	$13,462	$6,750	'	'	$6,712

Acquisitions_Components_of_Acq

Acquisitions - Components of Acquired Intangible Assets on a Preliminary Basis (Detail) (USD $)	9 Months Ended	0 Months Ended		9 Months Ended	0 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Dec. 18, 2013	Dec. 18, 2013	Jul. 04, 2014	Dec. 18, 2013	Dec. 18, 2013
		Mindspeed [Member]	Developed Technology [Member]	Customer Relationships [Member]	Customer Relationships [Member]	In-Process Research and Development [Member]
			Mindspeed [Member]		Mindspeed [Member]	Mindspeed [Member]
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'	'
Acquired intangible assets	$162,495	$155,783	$121,283	$12,920	$12,920	$21,580
Acquired intangible assets, Useful Lives	'	'	'7 years	'	'10 years	'

Acquisitions_Summary_of_Revenu

Acquisitions - Summary of Revenue and Earnings (Detail) (Mindspeed [Member], USD $)	9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014
Mindspeed [Member]	'
Business Acquisition [Line Items]	'
Revenue	$64,765
Loss from continuing operations before income taxes	($18,534)

Acquisitions_Condensed_Consoli

Acquisitions - Condensed Consolidated Statement of Operations Related to Divested Business (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Loss from discontinued operations, net	($4,605)
Mindspeed [Member]	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'
Revenue	2,440
Loss before income taxes	-7,381
Benefit for income taxes	2,776
Loss from discontinued operations, net	($4,605)

Acquisitions_Summary_of_Supple

Acquisitions - Summary of Supplemental Pro Forma Data (Detail) (Mindspeed [Member], USD $)	9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014
Mindspeed [Member]	'
Business Acquisition [Line Items]	'
Revenue	$323,801
Net loss	($27,051)

Financial_Instruments_Financia

Financial Instruments - Financial Instruments Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jul. 04, 2014	Sep. 27, 2013
In Thousands, unless otherwise specified
Warrant Liability [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial liabilities measured at fair value on a recurring basis	$17,439	$11,873
Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial liabilities measured at fair value on a recurring basis	5,250	'
Unobservable Inputs (Level 3) [Member] | Warrant Liability [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial liabilities measured at fair value on a recurring basis	17,439	11,873
Unobservable Inputs (Level 3) [Member] | Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial liabilities measured at fair value on a recurring basis	$5,250	'

Financial_Instruments_Changes_

Financial Instruments - Changes in Financial Instruments with Inputs Classified within Level 3 of Fair Value (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Warrant Liability [Member]	'	'	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Changes in financial liabilities with inputs classified within Level 3 of the fair value, beginning balance	$14,657	$10,656	$11,873	$7,561
Net Realized/ Unrealized Losses (Gains) Included in Earnings	2,782	-1,060	5,566	2,035
Transfers in and/or (out) of Level 3	'	'	'	'
Changes in financial liabilities with inputs classified within Level 3 of the fair value, ending balance	17,439	9,596	17,439	9,596
Securities [Member]	'	'	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Changes in financial liabilities with inputs classified within Level 3 of the fair value, beginning balance	250	'	0	'
Purchases and Issuances	5,000	'	5,250	'
Transfers in and/or (out) of Level 3	'	'	'	'
Changes in financial liabilities with inputs classified within Level 3 of the fair value, ending balance	5,250	'	5,250	'
Contingent Consideration [Member]	'	'	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Changes in financial liabilities with inputs classified within Level 3 of the fair value, beginning balance	'	'	'	6,580
Net Realized/ Unrealized Losses (Gains) Included in Earnings	'	'	'	-577
Sales and Settlements	'	'	'	-6,003
Transfers in and/or (out) of Level 3	'	'	'	'
Changes in financial liabilities with inputs classified within Level 3 of the fair value, ending balance	'	$0	'	$0

Financial_Instruments_Addition

Financial Instruments - Additional Information (Detail)	0 Months Ended
	Jul. 04, 2014
Fair Value Disclosures [Abstract]	'
Expected life of stock warrants	'6 years 6 months
Expected volatility	42.40%
Risk free rate	2.20%

Inventories_Components_of_Inve

Inventories - Components of Inventories (Detail) (USD $)	Jul. 04, 2014	Sep. 27, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw materials	$34,133	$27,855
Work-in-process	6,486	6,021
Finished goods	29,304	21,032
Total	$69,923	$54,908

Property_and_Equipment_Compone

Property and Equipment - Components of Property and Equipment (Detail) (USD $)	Jul. 04, 2014	Sep. 27, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	$92,965	$66,579
Less accumulated depreciation and amortization	-44,105	-33,844
Property and equipment - net	48,860	32,735
Machinery and Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	65,388	48,050
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	7,998	5,129
Furniture and Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	1,017	782
Construction in Process [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	10,804	6,234
Computer Equipment and Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	$7,758	$6,384

Property_and_Equipment_Additio

Property and Equipment - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Property Plant And Equipment [Abstract]	'	'	'	'
Depreciation and amortization expense	$3.70	$2.60	$10.80	$7.90

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

0 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

8-May-14

Sep. 26, 2013

Jul. 04, 2014

Jul. 04, 2014

Sep. 26, 2013

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

8-May-14

Jul. 04, 2014

Jul. 04, 2014

Jul. 04, 2014

8-May-14

Mindspeed [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Term Loans [Member]

Term Loans [Member]

Term Loans [Member]

Term Loans [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Interest Rate LIBOR One [Member]

Interest Rate LIBOR Two [Member]

Interest Rate LIBOR Three [Member]

Interest Rate LIBOR Four [Member]

Interest Rate LIBOR Five [Member]

Interest Rate LIBOR Six [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

LIBOR [Member]

Base Rate [Member]

LIBOR [Member]

Base Rate [Member]

LIBOR [Member]

Base Rate [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving credit facility maturity date

'

'

'

30-Sep-18

'

'

'

'

'

'

'

'

'

'

'

'

'

31-May-21

'

'

'

31-May-19

'

Revolving credit facility amended date

'

'

'

5-Nov-13

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5-Nov-13

'

Revolving credit facility maximum borrowing availability

'

'

'

'

$300,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

$350,000,000

'

'

'

$100,000,000

Revolving credit facility interest rate

'

'

'

'Borrowings under the revolving credit facility either bore a variable interest rate equal to (i) the greater of the lender's prime rate, the federal funds effective rate plus 0.5%, or an adjusted LIBOR plus 1.0%, in each case plus either an additional 1.00%, 1.25% or 1.50%, subject to certain conditions, or (ii) an adjusted LIBOR rate plus either 2.00%, 2.25% or 2.50%, subject to certain conditions.

'

'

'

'

'

'

'

'

'

'

'

'

'

'Borrowings under the Term Loans bear interest rate (payable quarterly) at: (i) for LIBOR loans, a rate per annum equal to the LIBOR rate (subject to a floor of 0.75%), plus an applicable margin of 3.75%, and (ii) for base rate loans, a rate per annum equal to the prime rate (subject to a floor of 1.75%), plus an applicable margin of 2.75%. Borrowings under the Revolving Facility bear interest (payable quarterly) at (i) for LIBOR loans, a rate per annum equal to the LIBOR rate, plus an applicable margin in the range of 2.00% to 2.50% (based on the Companybs total net leverage ratio being within certain defined ranges), and (ii) for base rate loans, a rate per annum equal to the prime rate, plus an applicable margin in the range of 1.00% to 1.50% (based on the Companybs total net leverage ratio being within certain defined ranges).

'

'

'

'Borrowings under the revolving credit facility either bore a variable interest rate equal to (i) the greater of the lender's prime rate, the federal funds effective rate plus 0.5%, or an adjusted LIBOR plus 1.0%, in each case plus either an additional 1.00%, 1.25% or 1.50%, subject to certain conditions, or (ii) an adjusted LIBOR rate plus either 2.00%, 2.25% or 2.50%, subject to certain conditions.

'

Revolving credit facility, LIBOR rate

'

'

'

'Adjusted LIBOR plus 1.0%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Adjusted LIBOR plus 1.0%

'

Revolving credit facility federal funds effective rate

'

'

'

'Federal funds effective rate plus 0.5%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Federal funds effective rate plus 0.5%

'

Federal funds effective rate

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

LIBOR rate

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

Adjusted LIBOR rate percentage

'

'

'

'

'

1.00%

1.25%

1.50%

2.00%

2.25%

2.50%

'

'

'

'

'

'

'

'

'

'

'

'

Indebtedness on revolving credit facility

'

245,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayment of outstanding credit facility

245,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term loan discount rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.75%

'

'

'

'

'

Floor rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.75%

1.75%

'

'

Applicable margin rate

'

'

'

'

'

'

'

'

'

'

'

'

2.00%

1.00%

'

2.50%

1.50%

'

'

3.75%

2.75%

'

'

Percentage of unused line fee

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

0.38%

'

'

'

'

'

'

'

'

Percentage of quarterly principal installment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

Expected maturity period

'

'

'Due in June 2017

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'The Term Loans are payable in quarterly principal installments of 0.25% of the aggregate Term Loans on the last business day of each calendar quarter, beginning on the last business day of September 2014, with the remainder due on the maturity date.

'

'

'

'

'

Principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

350,000,000

'

'

'

'

'

Deferred financing costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,100,000

'

'

'

'

'

Note payable, interest rate

'

'

6.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note payable

'

'

$4,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Schedule_of_Remained_Outs

Debt - Schedule of Remained Outstanding on Term Loans (Detail) (USD $)	Jul. 04, 2014
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'
Current portion	$8,032
Long-term, less current portion	343,938
Term Loans [Member]	'
Debt Instrument [Line Items]	'
Principal balance	350,000
Unamortized discount	-2,562
Long-term including current portion	347,438
Long-term including current portion	347,438
Current portion	3,500
Long-term, less current portion	$343,938

Debt_Schedule_of_Minimum_Princ

Debt - Schedule of Minimum Principal Payments under Term Loans (Detail) (Term Loans [Member], USD $)	Jul. 04, 2014
In Thousands, unless otherwise specified
Term Loans [Member]	'
Debt Instrument [Line Items]	'
2014 (rest of fiscal year)	$875
2015	3,478
2016	3,444
2017	3,409
2018	3,375
Thereafter	335,419
Total	$350,000

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Summary of Amortization Expense of Intangible Assets (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Total	$6,775	$1,079	$15,666	$3,237
Cost of Revenue [Member]	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Total	6,270	745	14,292	2,235
Selling, General and Administrative [Member]	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Total	$505	$334	$1,374	$1,002

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) (USD $)	Jul. 04, 2014	Sep. 27, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	$192,927	$40,187
Less accumulated amortization	-30,433	-15,389
Intangible assets - net	162,494	24,798
Acquired Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	141,877	23,637
Less accumulated amortization	-23,200	-9,600
Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	26,070	13,150
Less accumulated amortization	-7,200	-5,800
In-Process Research and Development [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	21,580	'
Trade Name [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	$3,400	$3,400

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Summary of Activity in Intangible Assets and Goodwill (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014
Finite-Lived Intangible Assets [Line Items]	'
Balance at September 27, 2013	$46,937
Mindspeed Acquisition	162,495
Other intangibles purchased	3,810
Disposal upon sale of assets	-6,853
Balance at July 4, 2014	206,389
In-Process Research and Development [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Balance at September 27, 2013	'
Mindspeed Acquisition	21,580
Other intangibles purchased	'
Disposal upon sale of assets	'
Balance at July 4, 2014	21,580
Trade Name [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Balance at September 27, 2013	3,400
Mindspeed Acquisition	'
Other intangibles purchased	'
Disposal upon sale of assets	'
Balance at July 4, 2014	3,400
Acquired Technology [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Balance at September 27, 2013	23,637
Mindspeed Acquisition	121,283
Other intangibles purchased	3,810
Disposal upon sale of assets	-6,853
Balance at July 4, 2014	141,877
Customer Relationships [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Balance at September 27, 2013	13,150
Mindspeed Acquisition	12,920
Other intangibles purchased	'
Disposal upon sale of assets	'
Balance at July 4, 2014	26,070
Goodwill [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Balance at September 27, 2013	6,750
Mindspeed Acquisition	6,712
Other intangibles purchased	'
Disposal upon sale of assets	'
Balance at July 4, 2014	$13,462

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	Jul. 04, 2014	Sep. 27, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Accumulated amortization	$30,433	$15,389
Acquired Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Accumulated amortization	23,200	9,600
Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Accumulated amortization	$7,200	$5,800

Goodwill_and_Intangible_Assets6

Goodwill and Intangible Assets - Summary of Estimated Amortization of Intangible Assets in Future Fiscal Years (Detail) (USD $)	Jul. 04, 2014
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'
2014 (rest of fiscal year)	$6,589
2015	25,503
2016	23,338
2017	21,513
2018	18,316
Thereafter	42,255
Amortizable intangible assets - net	$137,514

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	Jul. 04, 2014	Sep. 27, 2013
Stockholders Equity Note [Abstract]	'	'
Preferred stock, par value	$0.00	'
Preferred stock, shares authorized	10,000,000	'
Common stock, par value	$0.00	'
Common stock, shares authorized	300,000,000	'
Unvested shares of restricted common stock excluded from outstanding shares	81,000	74,000

Income_Loss_Per_Share_Computat

Income (Loss) Per Share - Computation for Basic and Diluted Net Income Per Share of Common Stock (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Numerator:	'	'	'	'
Net income (loss)	$1,183	$6,980	($29,860)	$16,456
Denominator:	'	'	'	'
Weighted average common shares outstanding - basic	47,280	46,066	46,856	45,788
Weighted average common shares outstanding - diluted	48,524	47,221	46,856	47,036
Common stock income (loss) per share:	'	'	'	'
Basic	$0.03	$0.15	($0.64)	$0.36
Diluted	$0.02	$0.15	($0.64)	$0.35
Options, Restricted Stock and Warrants [Member]	'	'	'	'
Denominator:	'	'	'	'
Dilutive effect of options, restricted stock and warrants	1,244	1,155	'	1,248

Income_Loss_Per_Share_Addition

Income (Loss) Per Share - Additional Information (Detail)	Jul. 04, 2014
In Thousands, unless otherwise specified
Earnings Per Share [Abstract]	'
Common stock issuable upon exercise of stock options, restricted stock and warrants	1,349

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	0 Months Ended	9 Months Ended	12 Months Ended
	Jan. 28, 2013	Jul. 04, 2014	Sep. 27, 2013
Loss Contingencies [Line Items]	'	'	'
Long term technology licensing and transfer commitment	'	$5,000,000	$4,400,000
Long term technology licensing and transfer commitment, Expiry Date	'	'2016-07	'
Alleged damages	2,200,000	'	'
Patent Suit Against Laird, Trial scheduled to begin date	'	'2016-05	'
Maximum [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Long term technology licensing and transfer commitment	'	5,300,000	'
Parties agreed, attorneys' fee payable to plaintiffs' counsel	'	$425,000	'

Restructurings_Additional_Info

Restructurings - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Jul. 04, 2014
Restructuring And Related Activities [Abstract]	'
Severance and outplacement fees for the terminated employees	$10.20

Restructurings_Summary_of_Cost

Restructurings - Summary of Costs Related to Restructuring Actions (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Restructuring And Related Activities [Abstract]	'	'	'
Beginning Balance of accrued costs	'	$145	'
Current period charges - continuing operations	1,060	15,725	1,060
Payments	'	-8,169	'
Ending Balance of accrued costs	'	$7,701	'

ShareBased_Compensation_Effect

Share-Based Compensation - Effects of Stock-Based Compensation Expense Related to Stock-Based Awards to Employees and Non-Employees (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Components Of Salaries And Benefits [Line Items]	'	'	'	'
Total stock-based compensation expense	$3,390	$1,420	$8,525	$4,726
Cost of Revenue [Member]	'	'	'	'
Components Of Salaries And Benefits [Line Items]	'	'	'	'
Total stock-based compensation expense	646	243	1,355	852
Research and Development [Member]	'	'	'	'
Components Of Salaries And Benefits [Line Items]	'	'	'	'
Total stock-based compensation expense	893	421	2,105	1,277
Selling, General and Administrative [Member]	'	'	'	'
Components Of Salaries And Benefits [Line Items]	'	'	'	'
Total stock-based compensation expense	$1,851	$756	$5,065	$2,597

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended
In Millions, except Share data, unless otherwise specified	Apr. 30, 2014	Jul. 04, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total intrinsic value of options exercised	'	$6.30
Compensation cost expected to be recognized	'	'3 years
Stock options granted	405,000	405,000
Stock options granted, fair value	3.4	'
Total intrinsic value of awards vesting	'	8.9
Maximum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock options granted targeted vesting period	'10 years	'
Restricted Stock Units [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total unrecognized compensation cost	'	19.9
Compensation cost expected to be recognized	'	'2 years 9 months 18 days
Omnibus Incentive Plan [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Increase in common stock available for issuance, shares	'	1,900,000
2012 Employee Stock Purchase Plan [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Increase in common stock available for issuance, shares	'	600,000
Future grants	'	10,000,000
Nonvested Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Total unrecognized compensation cost	'	$2.90

ShareBased_Compensation_Summar

Share-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)	0 Months Ended		1 Months Ended	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Jul. 04, 2014	Sep. 27, 2013	Apr. 30, 2014	Jul. 04, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'	'
Number of Shares, Outstanding, Beginning balance	1,060,000	841,000	'	841,000
Number of Shares, Assumed in Mindspeed Acquisition	'	'	'	439,000
Number of Shares, Granted	'	'	405,000	405,000
Number of Shares, Exercised	'	'	'	-446,000
Number of Shares, Forfeited, canceled or expired	'	'	'	-179,000
Number of Shares, Outstanding, Ending balance	'	'	'	1,060,000
Number of Shares, Options vested and expected to vest as of July 4, 2014	'	'	'	1,060,000
Number of Shares, Options vested and exercisable as of July 4, 2014	'	'	'	621,000
Weighted-Average Exercise Price Per Share, Outstanding, Beginning balance	$11.50	$1.60	'	$1.60
Weighted-Average Exercise Price Per Share, Assumed in Mindspeed Acquisition	'	'	'	$24.50
Weighted-Average Exercise Price Per Share, Granted	'	'	'	$17.50
Weighted-Average Exercise Price Per Share, Exercised	'	'	'	$4.40
Weighted-Average Exercise Price Per Share, Forfeited, canceled or expired	'	'	'	$28.39
Weighted-Average Exercise Price Per Share, Outstanding, Ending balance	'	'	'	$11.50
Weighted-Average Exercise Price Per Share, Options vested and expected to vest as of July 4, 2014	'	'	'	$11.50
Weighted-Average Exercise Price Per Share, Options vested and exercisable as of July 4, 2014	'	'	'	$7.85
Weighted-Average Remaining Contractual Term (in years), Outstanding-July 4, 2014	'6 years 10 months 24 days	'6 years 2 months 12 days	'	'
Weighted-Average Remaining Contractual Term (in years), Options vested and expected to vest as of July 4, 2014	'6 years 10 months 24 days	'	'	'
Weighted-Average Remaining Contractual Term (in years), Options vested and exercisable as of July 4, 2014	'5 years 1 month 6 days	'	'	'
Aggregate Intrinsic Value, Outstanding, Beginning balance	$12,667	$13,131	'	$13,131
Aggregate Intrinsic Value, Outstanding, Ending balance	'	'	'	12,667
Aggregate Intrinsic Value, Options vested and expected to vest as of July 4, 2014	'	'	'	12,667
Aggregate Intrinsic Value, Options vested and exercisable as of July 4, 2014	'	'	'	$9,925

ShareBased_Compensation_Summar1

Share-Based Compensation - Summary of Restricted Stock and Restricted Stock Units Activity (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Number of Shares, Unvested - September 27, 2013	1,129
Number of Shares, Assumed in Mindspeed Acquisition	285
Number of Shares, Granted	951
Number of Shares, Vested and released	-514
Number of Shares, Forfeited, canceled or expired	-143
Number of Shares, Issued and unvested - July 4, 2014	1,708
Number of Shares, Shares expected to vest - July 4, 2014	1,489
Weighted-Average Remaining Contractual Term (in years), Unvested - September 27, 2013	'2 years 10 months 24 days
Weighted-Average Remaining Contractual Term (in years), Issued and unvested - July 4, 2014	'2 years 9 months 18 days
Weighted-Average Remaining Contractual Term (in years), Shares expected to vest - July 4, 2014	'2 years 9 months 18 days
Aggregate Intrinsic Value, Unvested - September 27, 2013	$18,148
Aggregate Intrinsic Value, Issued and unvested - July 4, 2014	34,422
Aggregate Intrinsic Value, Shares expected to vest - July 4, 2014	$30,003

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Income Taxes [Line Items]	'	'	'	'
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%	35.00%
Mindspeed [Member]	'	'	'	'
Income Taxes [Line Items]	'	'	'	'
Net operating loss carryforwards	683.7	'	683.7	'
Expiration beginning year for net operating loss carryforwards	'	'	'2033	'
Federal research and development tax credit carryforwards	19.5	'	19.5	'
Internal revenue	'	'	305.9	'
Estimated aggregate net deferred income tax assets acquire	84.3	'	84.3	'
Net deferred income tax liability	68	'	68	'
Valuation allowance	16.8	'	16.8	'
Nitronex LLC [Member]	'	'	'	'
Income Taxes [Line Items]	'	'	'	'
Increase to additional paid-in capital	'	'	6.2	'

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
Related Party Transaction [Line Items]	'	'	'	'
Minimum service requirements or payment obligations	$0	'	$0	'
Notice period to terminate agreement	'	'	'30 days	'
Other income-related party	'	123,000	118,000	293,000
Director [Member]	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'
Recorded revenue from sales of product to a privately-held company	$65,000	$242,000	$65,000	$345,000

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information - Additional Information (Detail) (USD $)	0 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014
			Mindspeed [Member]
Supplemental Cash Flow Elements [Abstract]	'	'	'
Unpaid amounts related to purchase of assets	$0.70	$0.80	'
Assumed indebtedness	'	'	39.8
Debt paid	'	'	$35

Geographic_and_Significant_Cus2

Geographic and Significant Customer Information - Summary of Different Geographic Regions (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013	Sep. 27, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'
Revenue by Geographic Region	$112,364	$83,477	$304,345	$238,396	'
Long-Lived Assets by Geographic Region	48,860	'	48,860	'	32,735
United States [Member]	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'
Revenue by Geographic Region	52,127	48,010	156,931	140,627	'
Long-Lived Assets by Geographic Region	40,027	'	40,027	'	26,226
International [Member]	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'
Revenue by Geographic Region	60,237	35,467	147,414	97,769	'
Long-Lived Assets by Geographic Region	$8,833	'	$8,833	'	$6,509

Geographic_and_Significant_Cus3

Geographic and Significant Customer Information - Summary of Different Geographic Regions (Parenthetical) (Detail)	Jul. 04, 2014	Sep. 27, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Percentage of geographic segment revenue threshold	10.00%	10.00%
Percentage of geographic segment long-lived assets threshold	10.00%	10.00%
Asia-Pacific Region [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Percentage of geographic segment long-lived assets threshold	12.00%	12.00%

Geographic_and_Significant_Cus4

Geographic and Significant Customer Information - Additional Information (Detail)	9 Months Ended		3 Months Ended		9 Months Ended
	Jul. 04, 2014	Sep. 27, 2013	Jul. 04, 2014	Jun. 28, 2013	Jul. 04, 2014	Jun. 28, 2013
	Customer		Sales Revenue, Net [Member]	Sales Revenue, Net [Member]	Sales Revenue, Net [Member]	Sales Revenue, Net [Member]
			Customer Concentration Risk [Member]	Customer Concentration Risk [Member]	Customer Concentration Risk [Member]	Customer Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'
Percentage of total sales and accounts receivable	10.00%	'	'	'	'	'
Number of major customers	10	'	'	'	'	'
Total revenue from ten customers in percentage	'	'	61.00%	59.00%	61.00%	60.00%
Percentage of geographic segment long-lived assets threshold	10.00%	10.00%	'	'	'	'

Geographic_and_Significant_Cus5

Geographic and Significant Customer Information - Summary of Customer Concentrations as Percentage of Total Sales and Accounts Receivable (Detail) (Customer Concentration Risk [Member])

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

Jul. 04, 2014

Jun. 28, 2013

Jul. 04, 2014

Jun. 28, 2013

Jul. 04, 2014

Jun. 28, 2013

Jul. 04, 2014

Jun. 28, 2013

Jul. 04, 2014

Sep. 27, 2013

Jul. 04, 2014

Jun. 28, 2013

Jul. 04, 2014

Jun. 28, 2013

Jul. 04, 2014

Sep. 27, 2013

Jul. 04, 2014

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Customera [Member]

Customera [Member]

Customera [Member]

Customera [Member]

Customera [Member]

Customera [Member]

Customer B [Member]

Customer B [Member]

Customer B [Member]

Customer B [Member]

Customer B [Member]

Customer B [Member]

Customer C [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Accounts Receivable [Member]

Accounts Receivable [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Sales Revenue, Net [Member]

Accounts Receivable [Member]

Accounts Receivable [Member]

Sales Revenue, Net [Member]

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Concentration Risk, Percentage

61.00%

59.00%

61.00%

60.00%

12.00%

15.00%

16.00%

16.00%

15.00%

18.00%

17.00%

25.00%

19.00%

25.00%

14.00%

21.00%

11.00%