MACOM Technology Solutions (MTSI) 10-Q 28 Jan 21 2021 Q1 Quarterly report Financial data

Cover Page

Cover Page - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 25, 2021	Oct. 02, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jan. 1, 2021
Document Transition Report	false
Entity File Number	001-35451
Entity Registrant Name	MACOM Technology Solutions Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-0306875
Entity Address, Address Line One	100 Chelmsford Street
Entity Address, City or Town	Lowell
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01851
City Area Code	978
Local Phone Number	656-2500
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	MTSI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		68,344,490
Entity Central Index Key	0001493594
Amendment Flag	false
Current Fiscal Year End Date	--10-01
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2021
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	$ (122)		$ (347)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Assets, Current [Abstract]
Cash and cash equivalents	$ 128,728	$ 129,441
Short-term investments	226,044	203,711
Accounts Receivable, after Allowance for Credit Loss, Current	55,209	45,884
Inventories	89,015	91,584
Prepaid and other current assets	10,219	10,899
Total current assets	509,215	481,519
Property and equipment, net	115,953	118,866
Goodwill	315,338	315,012
Intangible assets, net	118,905	130,898
Deferred income taxes	41,417	41,935
Other investments	12,942	17,745
Other long-term assets	39,912	40,453
TOTAL ASSETS	1,153,682	1,146,428
Current liabilities:
Finance lease liabilities	1,319	1,368
Current portion of long-term debt	6,885	6,885
Accounts payable	28,158	23,043
Accrued liabilities	61,794	63,654
Total current liabilities	98,156	94,950
Finance lease liabilities	28,715	28,994
Long-term debt, less current portion	650,931	652,172
Warrant liability	0	25,312
Other long-term liabilities	46,430	44,854
Total liabilities	824,232	846,282
Stockholders’ equity:
Common stock	68	67
Treasury stock, at cost	(330)	(330)
Accumulated other comprehensive income	6,138	5,009
Additional paid-in capital	1,172,269	1,135,127
Accumulated deficit	(848,695)	(839,727)
Total stockholders’ equity	329,450	300,146
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,153,682	$ 1,146,428

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Income Statement [Abstract]
Revenue	$ 148,504	$ 119,097
Cost of revenue	68,242	60,893
Gross profit	80,262	58,204
Operating expenses:
Research and development	36,936	35,158
Selling, general and administrative	31,252	32,340
Restructuring charges	0	1,234
Total operating expenses	68,188	68,732
Income (loss) from operations	12,074	(10,528)
Other expense:
Warrant liability expense	(11,130)	(4,087)
Interest expense, net	(4,734)	(8,621)
Other expense, net	(4,504)	(3,740)
Total other expense, net	(20,368)	(16,448)
Loss before income taxes	(8,294)	(26,976)
Income tax expense	674	1,386
Net loss	$ (8,968)	$ (28,362)
Net loss per share:
Loss per share - Basic	$ (0.13)	$ (0.43)
Loss per share - Diluted	$ (0.13)	$ (0.43)
Weighted average shares used:
Basic (in shares)	67,756	66,240
Diluted (in shares)	67,756	66,240

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (8,968)	$ (28,362)
Unrealized gain on short term investments, net of tax	176	79
Foreign currency translation gain, net of tax	953	(248)
Other comprehensive income, net of tax	1,129	(169)
Total comprehensive loss	$ (7,839)	$ (28,531)

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Treasury Stock	Accumulated Other Comprehensive Income	Additional Paid-in Capital	Accumulated Deficit	Accumulated DeficitCumulative Effect, Period of Adoption, Adjustment
Treasury Stock, Shares				(23)
Balance at beginning of period, (in shares) at Sep. 27, 2019			66,177
Balance at beginning of period at Sep. 27, 2019	$ 313,896	$ (1,875)	$ 66	$ (330)	$ 4,358	$ 1,101,576	$ (791,774)	$ (1,875)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises (in shares)			3
Stock option exercises	43					43
Vesting of restricted common stock and units (in shares)			10
Vesting of restricted common stock and units	0		$ 0
Issuance of common stock pursuant to employee stock purchase plan (in shares)			160
Issuance of common stock pursuant to employee stock purchase plan	1,930					1,930
Shares repurchased for stock withholdings on restricted stock awards (in shares)			(4)
Shares repurchased for tax withholdings on equity awards	(93)					(93)
Share-based compensation	8,150					8,150
Other comprehensive income, net of tax	(169)				(169)
Net loss	(28,362)						(28,362)
Balance at end of period, (in shares) at Jan. 03, 2020			66,346
Balance at end of period at Jan. 03, 2020	293,520		$ 66	(330)	4,189	1,111,606	(822,011)
Balance at beginning of period, (in shares) at Sep. 27, 2019			66,177
Balance at beginning of period at Sep. 27, 2019	313,896	$ (1,875)	$ 66	(330)	4,358	1,101,576	(791,774)	$ (1,875)
Balance at end of period, (in shares) at Oct. 02, 2020			66,921
Balance at end of period at Oct. 02, 2020	$ 300,146		$ 67	$ (330)	5,009	1,135,127	(839,727)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member
Treasury Stock, Shares				(23)
Treasury Stock, Shares				(23)
Stock option exercises (in shares)	10		10
Stock option exercises	$ 175					175
Vesting of restricted common stock and units (in shares)			782
Vesting of restricted common stock and units	0		$ 0
Issuance of common stock pursuant to employee stock purchase plan (in shares)			93
Issuance of common stock pursuant to employee stock purchase plan	2,239					2,239
Shares repurchased for stock withholdings on restricted stock awards (in shares)			(297)
Shares repurchased for tax withholdings on equity awards	(11,844)					(11,844)
Share-based compensation	10,131					10,131
Other comprehensive income, net of tax	1,129				1,129
Issuance of common stock for the cashless exercise of warrants (in shares)			858
Issuance of common stock for the cashless exercise of warrants	36,442		$ 1			36,441
Net loss	(8,968)						(8,968)
Balance at end of period, (in shares) at Jan. 01, 2021			68,367
Balance at end of period at Jan. 01, 2021	$ 329,450		$ 68	$ (330)	$ 6,138	$ 1,172,269	$ (848,695)
Treasury Stock, Shares				(23)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (8,968)	$ (28,362)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and intangibles amortization	18,200	20,503
Share-based compensation	10,131	8,150
Warrant liability expense	11,130	4,087
Deferred financing cost amortization	548	1,015
Deferred income taxes	580	487
Loss on minority equity investment	4,803	3,749
Other adjustments, net	(385)	(477)
Change in operating assets and liabilities:
Accounts receivable	(9,325)	18,013
Inventories	2,570	1,023
Prepaid expenses and other assets	301	5,675
Accounts payable	5,401	(1,710)
Accrued and other liabilities	(27)	4,956
Income taxes	(179)	549
Net cash provided by operating activities	34,780	37,658
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(2,890)	(4,248)
Proceeds from sales and maturities of short-term investments	60,167	77,211
Purchases of short-term investments	(82,046)	(77,504)
Net cash used in investing activities	(24,769)	(4,541)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from stock option exercises and employee stock purchases	2,414	1,973
Payments on long-term debt	(1,721)	(1,721)
Payments on finance leases and other	(328)	(751)
Repurchase of common stock - tax withholdings on equity awards	(11,844)	(93)
Net cash used in financing activities	(11,479)	(592)
Foreign currency effect on cash	755	140
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(713)	32,665
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	128,728	$ 108,184
CASH AND CASH EQUIVALENTS — Beginning of period	129,441
CASH AND CASH EQUIVALENTS — End of period	$ 128,728

Short Term Investments

Short Term Investments	3 Months Ended
	Jan. 03, 2020
Investments, Debt and Equity Securities [Abstract]
Investments	INVESTMENTS Our short-term investments include corporate bonds and commercial paper and are classified as available-for-sale and are summarized in the tables below (in thousands): January 1, 2021 Amortized Gross Gross Aggregate Fair Corporate bonds $ 76,981 $ 421 $ (86) $ 77,316 Commercial paper 148,694 70 (36) 148,728 Total short-term investments $ 225,675 $ 491 $ (122) $ 226,044 October 2, 2020 Amortized Gross Gross Aggregate Fair Corporate bonds $ 68,605 $ 348 $ (333) $ 68,620 Commercial paper 134,913 192 (14) 135,091 Total short-term investments $ 203,518 $ 540 $ (347) $ 203,711 The contractual maturities of available-for-sale investments were as follows (in thousands): January 1, 2021 October 2, 2020 Less than 1 year $ 153,139 $ 138,612 Over 1 year 72,905 65,099 Total short-term investments $ 226,044 $ 203,711 Available-for-sale investments are reported at fair value and, as such, their associated unrealized gains and losses are reported as a separate component of stockholders’ equity within accumulated other comprehensive income. Other Investments — As of January 1, 2021, we held two non-marketable equity investments classified as long-term investments, including an investment in a Series B preferred stock ownership of a privately held manufacturing corporation with preferred liquidation rights over other equity shares. As the equity securities do not have a readily determinable fair value and do not qualify for the practical expedient under ASC 820, Fair Value Measurement, we have elected to account for this investment at cost less any impairment. We evaluate this investment for impairment at each balance sheet date. As of January 1, 2021 and October 2, 2020, the carrying value of this investment was $2.5 million.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	3 Months Ended
	Jan. 01, 2021
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	SUPPLEMENTAL CASH FLOW INFORMATION The following is a summary of supplemental cash flow information for the periods presented (in thousands): Three Months Ended January 1, January 3, Cash paid for interest $ 4,586 $ 7,624 Cash paid for income taxes $ 249 $ 377 Non-cash activities: Operating lease right-of-use assets obtained in exchange for new lease liabilities $ 717 $ 74 Financing lease assets obtained in exchange for new lease liabilities $ — $ 586 Non-cash capital expenditures $ 350 $ 1,517

Short Term Investments_2

Short Term Investments	3 Months Ended
	Jan. 01, 2021
Investments, Debt and Equity Securities [Abstract]
Summary of Available for Sale Investments	Our short-term investments include corporate bonds and commercial paper and are classified as available-for-sale and are summarized in the tables below (in thousands): January 1, 2021 Amortized Gross Gross Aggregate Fair Corporate bonds $ 76,981 $ 421 $ (86) $ 77,316 Commercial paper 148,694 70 (36) 148,728 Total short-term investments $ 225,675 $ 491 $ (122) $ 226,044 October 2, 2020 Amortized Gross Gross Aggregate Fair Corporate bonds $ 68,605 $ 348 $ (333) $ 68,620 Commercial paper 134,913 192 (14) 135,091 Total short-term investments $ 203,518 $ 540 $ (347) $ 203,711
Summary of Contractual Maturities of Investments	The contractual maturities of available-for-sale investments were as follows (in thousands): January 1, 2021 October 2, 2020 Less than 1 year $ 153,139 $ 138,612 Over 1 year 72,905 65,099 Total short-term investments $ 226,044 $ 203,711

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information	3 Months Ended
	Jan. 01, 2021
Supplemental Cash Flow Elements [Abstract]
Schedule of Supplemental Cash Flow Information Regarding Non-cash Investing and Financing Activities	The following is a summary of supplemental cash flow information for the periods presented (in thousands): Three Months Ended January 1, January 3, Cash paid for interest $ 4,586 $ 7,624 Cash paid for income taxes $ 249 $ 377 Non-cash activities: Operating lease right-of-use assets obtained in exchange for new lease liabilities $ 717 $ 74 Financing lease assets obtained in exchange for new lease liabilities $ — $ 586 Non-cash capital expenditures $ 350 $ 1,517

Investments - Summary of Availa

Investments - Summary of Available for Sale Investments - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 225,675	$ 203,518
Gross Unrealized Holding Gains	491	540
Gross Unrealized Holding Losses	122	347
Aggregate Fair Value	226,044	203,711
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	76,981	68,605
Gross Unrealized Holding Gains	421	348
Gross Unrealized Holding Losses	86	333
Aggregate Fair Value	77,316	68,620
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	148,694	134,913
Gross Unrealized Holding Gains	70	192
Gross Unrealized Holding Losses	36	14
Aggregate Fair Value	$ 148,728	$ 135,091

Investments - Summary of Contra

Investments - Summary of Contractual Maturities of Investments - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Investments, Debt and Equity Securities [Abstract]
Less than 1 year	$ 153,139	$ 138,612
Over 1 year	72,905	65,099
Total short-term investments	$ 226,044	$ 203,711

Share-Based Compensation - Effe

Share-Based Compensation - Effects of Stock-Based Compensation Expense Related to Stock-Based Awards to Employees and Non-Employees - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	$ 10,131	$ 8,150
Cost of Revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	871	962
Research and Development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	3,554	2,907
Selling, General and Administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense	$ 5,706	$ 4,281

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information - Additional Information - USD ($)	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (Loss) from Equity Method Investments	$ (4,803,000)	$ (3,749,000)
Unpaid amounts related to purchase of assets	350,000	$ 1,517,000
Capitalized Costs, Uncompleted Wells, Equipment and Facilities	$ 600,000

Supplemental Cash Flow Inform_4

Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information Regarding Non-cash Investing and Financing Activities - USD ($)	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Noncash or Part Noncash Acquisitions [Line Items]
Cash paid for interest	$ 4,586,000	$ 7,624,000
Cash paid for income taxes	249,000	377,000
Operating lease right-of-use assets obtained in exchange for new lease liabilities	717,000	74,000
Financing lease assets obtained in exchange for new lease liabilities	$ 0	$ 586,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Jan. 01, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Unaudited Interim Financial Information —The accompanying unaudited, condensed consolidated financial statements have been prepared according to the rules and regulations of the United States (the “U.S.”) Securities and Exchange Commission (the “SEC”) and, in the opinion of management, reflect all adjustments, which include normal recurring adjustments, necessary for a fair statement of the condensed consolidated balance sheets, condensed consolidated statements of operations, comprehensive loss, stockholders' equity and cash flows of MACOM Technology Solutions Holdings, Inc. (“MACOM”, the “Company”, “us”, “we” or “our”) for the periods presented. We prepare our interim financial information using the same accounting principles we use for our annual audited consolidated financial statements. Certain information and note disclosures normally included in the annual audited consolidated financial statements have been condensed or omitted in accordance with prescribed SEC rules. We believe that the disclosures made in our condensed consolidated financial statements and the accompanying notes are adequate to make the information presented not misleading. The condensed consolidated balance sheet as of October 2, 2020 is as reported in our audited consolidated financial statements as of that date. Our accounting policies are described in the notes to our October 2, 2020 consolidated financial statements, which were included in our Annual Report on Form 10-K for our fiscal year ended October 2, 2020 filed with the SEC on November 18, 2020 (the “2020 Annual Report on Form 10-K”). We recommend that the financial statements included in this Quarterly Report on Form 10-Q be read in conjunction with the consolidated financial statements and notes included in our 2020 Annual Report on Form 10-K. Principles of Consolidation— The accompanying condensed consolidated financial statements include our accounts and the accounts of our majority-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. We have a 52- or 53-week fiscal year ending on the Friday closest to the last day of September. Fiscal year 2021 includes 52 weeks and fiscal year 2020 included 53 weeks. To offset the effect of holidays, for fiscal years in which there are 53 weeks, we include the extra week arising in such fiscal years in the first fiscal quarter. Our first fiscal quarter ended January 1, 2021 included 13 weeks and the first fiscal quarter ended January 3, 2020 had 14 weeks. Use of Estimates —The preparation of condensed consolidated financial statements in conformity with U.S. generally accepted accounting principles (“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, we base estimates and assumptions on historical experience, currently available information and various other factors that management believes to be reasonable under the circumstances. Actual results may differ materially from these estimates and assumptions. Recent Accounting Pronouncements —Our Recent Accounting Pronouncements are described in the 2020 Annual Report on Form 10-K. Pronouncements Adopted in Fiscal Year 2021 On the first day of fiscal year 2021, we adopted Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This ASU introduces a new accounting model known as Credit Expected Credit Losses (“CECL”), which requires earlier recognition of credit losses. The CECL model utilizes a lifetime expected credit loss measurement objective for the recognition of credit losses for receivables at the time the financial asset is originated or acquired, replacing the current incurred loss methodology that delays recognition of credit losses until a probable loss has been incurred. There are other provisions within the standard affecting how impairments of other financial assets may be recorded and presented, as well as expanded disclosures. There was no impact to our unaudited condensed consolidated financial statements from the adoption of this guidance. We generate accounts receivable from customers and they are classified as short-term. We monitor collections and maintain a provision for expected credit losses based on historical trends, current conditions, and relevant forecasted information, in addition to provisions established for any specific collection issues that have been identified. As of January 1, 2021, our allowance for expected credit losses was less than $0.1 million . Our investments in debt securities, which are classified as available-for-sale, are further disclosed in Note 3, Investments . As of January 1, 2 021, our available-for-sale debt securities had gross unrealized losses of $0.1 million, which we believe to be temporary, and therefore there is no allowance for credit losses recorded in our condensed consolidated statement of operations. In January 2017, the Financial Accounting Standards Board (“FASB”) issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. ASU 2017-04 simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Instead, a one-step quantitative impairment test calculates goodwill impairment as the excess of the carrying value of a reporting unit over its fair value, up to the carrying value of the goodwill. This ASU should be applied on a prospective basis. We adopted this ASU in the first quarter of fiscal year 2021 and the adoption of this update did not have an impact on our condensed consolidated financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-15, Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, to provide additional guidance on the accounting for costs of implementing cloud computing arrangements that are service contracts, and requiring customers in such arrangements to follow the guidance in Subtopic 350-40. The amendments in this update require the capitalization of implementation costs during the application development stage of such hosting arrangements and amortization of the expense over the term of the arrangement beginning when the module or component of the hosting arrangement is ready for its intended use. Capitalized implementation costs and amortization thereof are also required to be classified in the same line item in the statements of financial position, operations and cash flows associated with the hosting service fees. We adopted this ASU in the first quarter of fiscal year 2021 and selected prospective application to all implementation costs incurred after the adoption date. The adoption of this update did not have an impact on our condensed consolidated financial statements and related disclosures. Pronouncements for Adoption in Subsequent Periods In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which provides optional expedients and exceptions to applying the guidance on contract modifications, hedge accounting, and other transactions, to simplify the accounting for transitioning from the London Interbank Offered Rate, and other interbank offered rates expected to be discontinued, to alternative reference rates. The guidance in this update was effective upon its issuance; if elected, it is to be applied prospectively through December 31, 2022. We are currently evaluating the effect the potential adoption of this ASU will have on our consolidated financial statements, including but not limited to our credit agreement.

Revenue (Notes)

Revenue (Notes)	3 Months Ended
	Jan. 01, 2021
Revenue [Abstract]
Revenue from Contract with Customer [Text Block]	. REVENUE Disaggregation of Revenue We disaggregate revenue from contracts with customers by markets and geography, as we believe it best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. The following tables present our revenue disaggregated by markets and geography (in thousands): Three Months Ended January 1, 2021 January 3, 2020 Revenue by Market: Telecommunications $ 51,532 $ 45,602 Industrial & Defense 61,618 50,482 Data Center 35,354 23,013 Total $ 148,504 $ 119,097 Three Months Ended January 1, 2021 January 3, 2020 Revenue by Geographic Region: United States $ 63,982 $ 53,951 China 42,376 37,341 Asia Pacific, excluding China (1) 21,773 18,820 Other Countries (2) 20,373 8,985 Total $ 148,504 $ 119,097 (1) Asia Pacific represents Taiwan, Japan, Singapore, India, Thailand, South Korea, Australia, Malaysia, New Zealand and the Philippines. (2) No country or region represented greater than 10% of our total revenue as of the dates presented, other than the United States, China and Asia Pacific region as presented above. Contract Balances We record contract assets or contract liabilities depending on the timing of revenue recognition, billings and cash collections on a contract-by-contract basis. Our contract liabilities primarily relate to deferred revenue, including advanced consideration received from customers for contracts prior to the transfer of control to the customer, and therefore revenue is subsequently recognized upon delivery of products and services. The following table presents the changes in contract liabilities during the three months ended January 1, 2021 (in thousands, except percentage): January 1, 2021 October 2, 2020 $ Change % Change Contract liabilities $ 7,370 $ 9,861 $ (2,491) (25) % As of January 1, 2021 and October 2, 2020, $3.5 million of our contract liabilities, were recorded as other long-term liabilities on our balance sheet with the remainder recorded as accrued liabilities. During the three months ended January 1, 2021, we recognized net sales of $5.3 million that were included in the contract liabilities balance as of the beginning of the period. The decrease in contract liabilities during the three months ended January 1, 2021, as shown in the table above, was primarily related to recognition of license revenue, partially offset by the deferral of revenue for invoiced products and services prior to when certain of our customers obtained control of the product and or services.

Inventories

Inventories	3 Months Ended
	Jan. 01, 2021
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories consist of the following (in thousands): January 1, October 2, Raw materials $ 49,245 $ 46,954 Work-in-process 9,102 9,324 Finished goods 30,668 35,306 Total inventory, net $ 89,015 $ 91,584

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Jan. 01, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	PROPERTY AND EQUIPMENT Property and equipment consists of the following (in thousands): January 1, October 2, Construction in process $ 16,952 $ 16,174 Machinery and equipment 193,112 191,953 Leasehold improvements 21,311 19,854 Furniture and fixtures 2,742 2,659 Computer equipment and software 18,516 18,487 Finance lease assets 35,589 35,589 Total property and equipment 288,222 284,716 Less accumulated depreciation and amortization (172,269) (165,850) Property and equipment, net $ 115,953 $ 118,866

Debt

Debt	3 Months Ended
	Jan. 01, 2021
Debt Disclosure [Abstract]
Debt	DEBT As of January 1, 2021, we are party to a credit agreement dated as of May 8, 2014 with a syndicate of lenders and Goldman Sachs Bank USA (“Goldman Sachs”), as administrative agent (as amended on February 13, 2015, August 31, 2016, March 10, 2017, May 19, 2017, May 2, 2018 and May 9, 2018, the “Credit Agreement”). As of January 1, 2021, the Credit Agreement consisted of term loans with an initial aggregate principal amount of $700.0 million (the “Term Loans”) and a revolving credit facility with an aggregate borrowing capacity of $160.0 million (the “Revolving Facility”). The Revolving Facility will mature in November 2021 and the Term Loans will mature in May 2024 and bear interest at: (i) for LIBOR loans for any interest period, a rate per annum equal to the LIBOR rate as determined by the administrative agent, plus an applicable margin of 2.25%; and (ii) for base rate loans, a rate per annum equal to the greater of (a) the prime rate quoted in the print edition of the Wall Street Journal, Money Rates Section, (b) the federal funds rate plus one-half of 1.00% and (c) the LIBOR rate applicable to a one-month interest period plus 1.00% (but, in each case, not less than 1.00%), plus an applicable margin of 1.25%. All principal amounts outstanding and interest rate information as of January 1, 2021, for the Credit Agreement were as follows (in thousands, except rate data): Principal Outstanding LIBOR Rate Margin Effective Interest Rate Term loans $664,366 0.15% 2.25% 2.40% As of January 1, 2021, approximately $4.7 million of deferred financing costs remain unamortized, of which $4.5 million is related to the Term Loans and is recorded as a direct reduction of the recognized debt liabilities in our accompanying condensed consolidated balance sheet, and $0.3 million is related to the Revolving Facility and is recorded in other long-term assets in our accompanying condensed consolidated balance sheet. The Term Loans and Revolving Facility are secured by a first priority lien on substantially all of our assets and provide that we must comply with certain financial and non-financial covenants. The Term Loans are payable in quarterly principal installments of approximately $1.7 million on the last business day of each calendar quarter, with the remainder due on the maturity date. In the event that we divest a business, the net cash proceeds of the divestment are generally required, subject to certain exceptions, to be applied to repayment of outstanding Term Loans except to the extent we reinvest such proceeds in assets useful for our business within 18 months of receiving the proceeds. If we enter into a binding agreement to reinvest such proceeds within 18 months of receiving them, we have until the later of 18 months following our receipt of the proceeds and six months following the date of such agreement to complete the reinvestment. As of January 1, 2021, we had $160.0 million of borrowing capacity under our Revolving Facility, of which we may borrow up to $50.0 million without being subject to certain financial covenants. As of January 1, 2021, the following remained outstanding on the Term Loans (in thousands): January 1, 2021 Principal balance $ 664,366 Unamortized discount (2,054) Unamortized deferred financing costs (4,496) Total term loans 657,816 Current portion 6,885 Long-term, less current portion $ 650,931 As of January 1, 2021, the minimum principal payments under the Term Loans in future fiscal years were as follows (in thousands): Amount 2021 (remainder of fiscal year) $ 5,163 2022 6,885 2023 6,885 2024 645,433 Total $ 664,366 The fair value of the Term Loans was estimated to be approximately $644.4 million as of January 1, 2021 and was determined using Level 2 inputs, including a quoted price from a financial institution.

Intangible Assets

Intangible Assets	3 Months Ended
	Jan. 01, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	INTANGIBLE ASSETS Amortization expense related to intangible assets is as follows (in thousands): Three Months Ended January 1, January 3, Cost of revenue $ 3,877 $ 4,420 Selling, general and administrative 8,116 8,654 Total $ 11,993 $ 13,074 Intangible assets consist of the following (in thousands): January 1, October 2, Acquired technology $ 179,434 $ 179,434 Customer relationships 245,870 245,870 Trade name (indefinite-lived) 3,400 3,400 Total 428,704 428,704 Less accumulated amortization (309,799) (297,806) Intangible assets — net $ 118,905 $ 130,898 A summary of the activity in gross intangible assets and goodwill is as follows (in thousands): Intangible Assets Total Intangible Assets Acquired Customer Trade Name Goodwill Balance as of October 2, 2020 $ 428,704 $ 179,434 $ 245,870 $ 3,400 $ 315,012 Currency translation adjustment — — — — 326 Balance as of January 1, 2021 $ 428,704 $ 179,434 $ 245,870 $ 3,400 $ 315,338 As of January 1, 2021, our estimated amortization of our intangible assets in future fiscal years was as follows (in thousands): 2021 Remaining 2022 2023 2024 2025 Thereafter Total Amortization expense $ 34,220 33,433 26,048 15,410 3,489 2,905 $ 115,505 Accumulated amortization for acquired technology and customer relationships were $155.9 million and $153.9 million, respectively, as of January 1, 2021, and $152.1 million and $145.7 million, respectively, as of October 2, 2020.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Jan. 01, 2021
Equity [Abstract]
Stockholders' Equity	STOCKHOLDERS' EQUITY We have authorized 10 million shares of $0.001 par value preferred stock and 300 million shares of $0.001 par value common stock as of January 1, 2021. Common Stock Warrants —In March 2012, we issued warrants to purchase 1,281,358 shares of common stock for $14.05 per share. During the fiscal quarter ended January 1, 2021, Summit Partners Private Equity Fund VII-A, L.P., Summit Partners Private Equity Fund VII-B, L.P., Summit Investors I, LLC, Summit Investors I (UK), L.P. and Mainsail Partners II, L.P. made cashless exercises of warrants for 1,281,358 shares at an exercise price of $14.05 per share, resulting in the issuance of 857,631 shares of common stock. We received no proceeds from the exercise of warrants. During the three months ended January 1, 2021 and January 3, 2020, we recorded the changes in the estimated fair value of the warrants in the accompanying statements of operations. See Note 4 - Fair Value for additional information related to the fair value of our warrant liability. See Note 10 - Earnings (Loss) Per Share for impact of the common stock warrants on loss per share.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	3 Months Ended
	Jan. 01, 2021
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	10. EARNINGS (LOSS) PER SHARE The following table sets forth the computation for basic and diluted net loss per share of common stock (in thousands, except per share data): Three Months Ended January 1, 2021 January 3, 2020 Numerator: Net loss attributable to common stockholders $ (8,968) $ (28,362) Denominator: Weighted average common shares outstanding-basic 67,756 66,240 Dilutive effect of stock options, restricted stock, restricted stock units and warrants — — Weighted average common shares outstanding-diluted 67,756 66,240 Net loss to common stockholders per share-Basic: $ (0.13) $ (0.43) Net loss to common stockholders per share-Diluted: $ (0.13) $ (0.43) During the three months ended January 1, 2021 and January 3, 2020, we had warrants outstanding which were measured at fair value. When calculating earnings per share, we are required to adjust for the dilutive effect of outstanding common stock equivalents, including adjustment to the numerator for the dilutive effect of contracts that must be settled in stock. The table above excludes the effects of 2,004,621 shares for the three months ended January 1, 2021 and 1,292,101 shares for the three months ended January 3, 2020 of potential shares of common stock issuable upon exercise of stock options, warrants, and the vesting of restricted stock and restricted stock units, as applicable, as the inclusion would be antidilutive.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Jan. 01, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIESFrom time to time, we may be subject to commercial disputes, employment issues, claims by other companies in the industry that we have infringed their intellectual property rights and other similar claims and litigation. Any such claims may lead to future litigation and material damages and defense costs. We were not involved in any material pending legal proceedings during the fiscal quarter ended January 1, 2021.

Restructurings

Restructurings	3 Months Ended
	Jan. 01, 2021
Restructuring and Related Activities [Abstract]
Restructurings	RESTRUCTURINGS We have periodically implemented restructuring actions in connection with broader plans to reduce staffing, reduce our internal manufacturing footprint and generally reduce operating costs. The restructuring expenses are primarily comprised of direct and incremental costs related to headcount reductions including severance and outplacement fees for the terminated employees, as well as facility closure costs. There were no restructuring charges incurred during the three months ended January 1, 2021. The following is a summary of the restructuring charges incurred during the three months ended January 3, 2020 (in thousands): Three Months Ended January 3, Employee related expenses and adjustments $ 1,160 Facility related expenses 74 Total restructuring charges $ 1,234 2019 Plan During the fiscal quarter ended June 28, 2019, we committed to a plan designed to strategically realign, streamline and improve certain of our business and operations, including reducing our workforce by approximately 250 employees, exiting six development facilities in France, Japan, the Netherlands, Florida, Massachusetts and Rhode Island, reducing certain development activities for one of our product lines and no longer investing in the design and development of optical modules and subsystems for Data Center applications (the “2019 Plan”). We incurred restructuring charges of $1.3 million in the three months ended January 3, 2020 under the 2019 Plan, including $1.2 million of employee-related costs and $0.1 million of other costs. This action was completed during fiscal 2020 and we do not expect to incur further costs. The remaining charges will be paid during fiscal 2021. Details of the 2019 Plan accrual activity for the three months ended January 1, 2021 are as follows (in thousands): Employee-Related Expense (1) Facility-Related Expense (2) Total Balance as of October 2, 2020 $ 235 $ 26 $ 261 Charges and adjustments — — — Charges paid/settled/other 11 (26) (15) Balance as of January 1, 2021 $ 246 $ — $ 246 (1) Primarily includes severance charges associated with the reduction of our workforce in certain facilities. (2) Primarily includes activities associated with the closure of certain facilities, including any associated asset impairments and contract termination costs.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Jan. 01, 2021
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement	SHARE-BASED COMPENSATION Stock Plans As of January 1, 2021, we had 18.4 million shares available for issuance under our 2012 Omnibus Incentive Plan (as Amended and Restated) (the “2012 Plan”) and 4.1 million shares available for issuance under our Employee Stock Purchase Plan. Under the 2012 Plan, we have the ability to issue incentive stock options (“ISOs”), non-statutory stock options (“NSOs”), performance based non-statutory stock options, stock appreciation rights, restricted stock awards (“RSAs”), restricted stock units (“RSUs”), performance-based restricted stock units (“PRSUs”), performance shares and other equity-based awards to employees, directors and outside consultants. The ISOs and NSOs must be granted at a price per share not less than the fair value of our common stock on the date of grant. Options granted to date primarily vest based on certain market-based and performance-based criteria. Options granted generally have a term of four years to seven years. Certain of the share-based awards granted and outstanding as of January 1, 2021 are subject to accelerated vesting upon a change in control of the Company. Share-Based Compensation The following table shows a summary of share-based compensation expense included in the condensed consolidated statements of operations (in thousands): Three Months Ended January 1, January 3, Cost of revenue $ 871 $ 962 Research and development 3,554 2,907 Selling, general and administrative 5,706 4,281 Total share-based compensation expense $ 10,131 $ 8,150 As of January 1, 2021, the total unrecognized compensation costs related to NQs, RSAs and RSUs, including awards with time-based and performance-based vesting was $61.9 million, which we expect to recognize over a weighted-average period of 2.4 years. As of January 1, 2021, total unrecognized compensation cost related to our Employee Stock Purchase Plan was $0.7 million. Stock Options A summary of stock option activity for the three months ended January 1, 2021 is as follows (in thousands, except per share amounts and contractual term): Number of Shares Weighted-Average Exercise Price per Share Weighted-Average Remaining Contractual Term (in Years) Aggregate Intrinsic Value Options outstanding as of October 2, 2020 325 $ 15.12 Exercised (10) 17.50 Forfeited, canceled or expired — — Options outstanding as of January 1, 2021 315 $ 15.05 6.85 $ 12,598 Options vested & expected to vest as of January 1, 2021 315 15.05 6.85 12,598 Options exercisable as of January 1, 2021 220 $ 14.61 7.72 $ 8,895 Aggregate intrinsic value represents the difference between our closing stock price on January 1, 2021 and the exercise price of outstanding, in-the-money options. The total intrinsic value of options exercised was $0.3 million for the three months ended January 1, 2021 and was not material for the three months ended January 3, 2020. Restricted Stock, Restricted Stock Units and Performance-Based Restricted Stock Units A summary of RSAs, RSUs and PRSUs activity for the three months ended January 1, 2021 is as follows: Number of RSAs, RSUs and PRSUs Weighted- Balance as of October 2, 2020 2,788 $ 20.84 Granted 907 29.30 Vested and released (782) 19.85 Forfeited, canceled or expired (30) 25.68 Balance as of January 1, 2021 2,883 $ 23.72

Income Taxes

Income Taxes	3 Months Ended
	Jan. 01, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES We are subject to income tax in the U.S. as well as other tax jurisdictions in which we conduct business. Earnings from non-U.S. activities are subject to local country income tax and may also be subject to current U.S. income tax. For interim periods, we record a tax provision or benefit based upon the estimated effective tax rate expected for the full fiscal year, adjusted for material discrete taxation matters arising during the interim periods. Our quarterly tax provision or benefit, and its quarterly estimate of the annual effective tax rate, are subject to significant variation due to several factors. These factors include variability in accurately predicting pre-tax income/loss, the mix of jurisdictions in which we operate, intercompany transactions, changes in how we do business, tax law developments, and relative changes in permanent tax benefits or expenses. The provision for income taxes and effective income tax rate are as follows (in thousands, except percentages): Three Months Ended January 1, January 3, Income tax expense $ 674 $ 1,386 Effective income tax rate (8.1) % (5.1) % The difference between the U.S. federal statutory income tax rate of 21% and our effective income tax rates for the three months ended January 1, 2021 and January 3, 2020 was primarily driven by the continuation of a full valuation allowance against any benefit associated with losses in the U.S. and income taxed in foreign jurisdictions generally at lower tax rates and where a valuation allowance does not apply. We recognize deferred tax assets to the extent that we believe that these assets are more likely than not to be realized. In making this determination, we consider available positive and negative evidence. We look at factors that may impact the valuation of our deferred tax asset including results of recent operations, future reversals of existing taxable temporary differences, projected future taxable income, and tax-planning strategies. We have determined that there was not sufficient objectively verifiable positive evidence to offset our significant negative objective evidence, therefore, we concluded that a full valuation allowance is appropriate for our U.S. deferred tax assets. Our negative objective evidence consists primarily of adjusted cumulative losses in the U.S. over the three-year period ended January 1, 2021. Our deferred income tax asset balance as of January 1, 2021 and October 2, 2020 is primarily attributable to an initial $39.8 million deferred asset generated from an intra-entity transfer of a license for intellectual property during the fiscal quarter ended September 27, 2019. We expect this deferred tax asset to amortize over the life of the intellectual property. The balance of the unrecognized tax benefits remained at $0.3 million as of January 1, 2021 when compared to the balance as of October 2, 2020. It is our policy to recognize any interest and penalties accrued related to unrecognized tax benefits in income tax expense. During the fiscal quarter ended January 1, 2021, we did not make any accrual or payment of interest or penalties, nor did we make any payment, because we believe our $0.3 million accrual would cover any additional amounts due.

Geographic and Significant Cust

Geographic and Significant Customer Information	3 Months Ended
	Jan. 01, 2021
Segment Reporting [Abstract]
Geographic and Significant Customer Information	GEOGRAPHIC AND SIGNIFICANT CUSTOMER INFORMATION We have one reportable operating segment that designs, develops, manufactures and markets semiconductors and modules. The determination of the number of reportable operating segments is based on the chief operating decision maker’s use of financial information for the purposes of assessing performance and making operating decisions. In evaluating financial performance and making operating decisions, the chief operating decision maker primarily uses consolidated metrics. We evaluate this assessment on an ongoing basis as facts and circumstances change and as of January 1, 2021 there were no changes to our conclusion. For information about our revenue in different geographic regions, based upon customer locations, see Note 2 - Revenue . Information about net property and equipment in different geographic regions is presented below (in thousands): January 1, October 2, United States $ 97,547 $ 99,118 Europe (1) 12,963 13,129 Other Countries (2) 5,443 6,619 Total $ 115,953 $ 118,866 (1) Europe primarily represents Finland, France, Germany, Ireland and Italy. (2) Other than the United States and Europe, no country or region represented greater than 10% of the total net property and equipment as of the dates presented. The following is a summary of customer concentrations as a percentage of revenue and accounts receivable as of and for the periods presented: Three Months Ended Revenue January 1, January 3, Customer A 14% 16 % Accounts Receivable January 1, October 2, Customer A 24 % 20 % Customer B 11 % 8 % No other customer represented more than 10% of revenue or accounts receivable in the periods presented in the accompanying condensed consolidated financial statements. For the three months ended January 1, 2021 and January 3, 2020 our top ten customers represented 55% and 60%, respectively, of total revenue.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Jan. 01, 2021
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation— The accompanying condensed consolidated financial statements include our accounts and the accounts of our majority-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Fiscal Period, Policy [Policy Text Block]	We have a 52- or 53-week fiscal year ending on the Friday closest to the last day of September. Fiscal year 2021 includes 52 weeks and fiscal year 2020 included 53 weeks. To offset the effect of holidays, for fiscal years in which there are 53 weeks, we include the extra week arising in such fiscal years in the first fiscal quarter. Our first fiscal quarter ended January 1, 2021 included 13 weeks and the first fiscal quarter ended January 3, 2020 had 14 weeks.
Use of Estimates	Use of Estimates —The preparation of condensed consolidated financial statements in conformity with U.S. generally accepted accounting principles (“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, we base estimates and assumptions on historical experience, currently available information and various other factors that management believes to be reasonable under the circumstances. Actual results may differ materially from these estimates and assumptions.

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Jan. 01, 2021
Revenue [Abstract]
Disaggregation of Revenue	The following tables present our revenue disaggregated by markets and geography (in thousands): Three Months Ended January 1, 2021 January 3, 2020 Revenue by Market: Telecommunications $ 51,532 $ 45,602 Industrial & Defense 61,618 50,482 Data Center 35,354 23,013 Total $ 148,504 $ 119,097 Three Months Ended January 1, 2021 January 3, 2020 Revenue by Geographic Region: United States $ 63,982 $ 53,951 China 42,376 37,341 Asia Pacific, excluding China (1) 21,773 18,820 Other Countries (2) 20,373 8,985 Total $ 148,504 $ 119,097 (1) Asia Pacific represents Taiwan, Japan, Singapore, India, Thailand, South Korea, Australia, Malaysia, New Zealand and the Philippines. (2) No country or region represented greater than 10% of our total revenue as of the dates presented, other than the United States, China and Asia Pacific region as presented above.
Contract with Customer, Asset and Liability	The following table presents the changes in contract liabilities during the three months ended January 1, 2021 (in thousands, except percentage): January 1, 2021 October 2, 2020 $ Change % Change Contract liabilities $ 7,370 $ 9,861 $ (2,491) (25) %

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Jan. 01, 2021
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis consist of the following (in thousands): January 1, 2021 Fair Value Active Markets for Identical Assets (Level 1) Observable Inputs (Level 2) Unobservable Inputs (Level 3) Assets Money market funds $ 18,585 $ 18,585 $ — $ — Commercial paper 148,728 — 148,728 — Corporate bonds 77,316 — 77,316 — Total assets measured at fair value $ 244,629 $ 18,585 $ 226,044 $ — October 2, 2020 Fair Value Active Markets for Identical Assets (Level 1) Observable Inputs (Level 2) Unobservable Inputs (Level 3) Assets Money market funds $ 20,139 $ 20,139 $ — $ — Commercial paper 135,091 — 135,091 — Corporate bonds 68,620 — 68,620 — Total assets measured at fair value $ 223,850 $ 20,139 $ 203,711 $ — Liabilities Common stock warrant liability $ 25,312 $ — $ — $ 25,312 Total liabilities measured at fair value $ 25,312 $ — $ — $ 25,312
Quantitative information Used in Fair Value Calculation of Level 3 Liabilities	The quantitative information utilized in the fair value calculation of our Level 3 liabilities is as follows: Inputs Liabilities Valuation Technique Unobservable Input October 2, 2020 Warrant liability Black-Scholes model Volatility 61.8% Discount rate 0.09% Expected life 0.2 years Exercise price $14.05 Stock price $33.80 Dividend rate —%
Changes in Liabilities with Inputs Classified within Level 3 of Fair Value	The changes in liabilities with inputs classified within Level 3 of the fair value hierarchy consist of the following (in thousands): October 2, Net Realized/Unrealized Losses Included in Earnings Purchases Sales and January 1, Common stock warrant liability $ 25,312 $ 11,130 $ — $ (36,442) $ — September 27, Net Realized/Unrealized Losses (Gains) Included in Earnings Purchases Sales and January 3, Common stock warrant liability $ 12,364 $ 4,087 $ — $ — $ 16,451

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Jan. 01, 2021
Inventory Disclosure [Abstract]
Components of Inventories	Inventories consist of the following (in thousands): January 1, October 2, Raw materials $ 49,245 $ 46,954 Work-in-process 9,102 9,324 Finished goods 30,668 35,306 Total inventory, net $ 89,015 $ 91,584

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Jan. 01, 2021
Property, Plant and Equipment [Abstract]
Components of Property, Plant and Equipment	Property and equipment consists of the following (in thousands): January 1, October 2, Construction in process $ 16,952 $ 16,174 Machinery and equipment 193,112 191,953 Leasehold improvements 21,311 19,854 Furniture and fixtures 2,742 2,659 Computer equipment and software 18,516 18,487 Finance lease assets 35,589 35,589 Total property and equipment 288,222 284,716 Less accumulated depreciation and amortization (172,269) (165,850) Property and equipment, net $ 115,953 $ 118,866

Debt (Tables)

Debt (Tables)	3 Months Ended
	Jan. 01, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	All principal amounts outstanding and interest rate information as of January 1, 2021, for the Credit Agreement were as follows (in thousands, except rate data): Principal Outstanding LIBOR Rate Margin Effective Interest Rate Term loans $664,366 0.15% 2.25% 2.40%
Schedule of Remained Outstanding on Term Loans	As of January 1, 2021, the following remained outstanding on the Term Loans (in thousands): January 1, 2021 Principal balance $ 664,366 Unamortized discount (2,054) Unamortized deferred financing costs (4,496) Total term loans 657,816 Current portion 6,885 Long-term, less current portion $ 650,931
Schedule of Minimum Principal Payments under Term Loans	As of January 1, 2021, the minimum principal payments under the Term Loans in future fiscal years were as follows (in thousands): Amount 2021 (remainder of fiscal year) $ 5,163 2022 6,885 2023 6,885 2024 645,433 Total $ 664,366

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Jan. 01, 2021
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 January 1, January 3, Cost of revenue $ 3,877 $ 4,420 Selling, general and administrative 8,116 8,654 Total $ 11,993 $ 13,074
Summary of Intangible Assets	Intangible assets consist of the following (in thousands): January 1, October 2, Acquired technology $ 179,434 $ 179,434 Customer relationships 245,870 245,870 Trade name (indefinite-lived) 3,400 3,400 Total 428,704 428,704 Less accumulated amortization (309,799) (297,806) Intangible assets — net $ 118,905 $ 130,898
Summary of Activity in Intangible Assets and Goodwill	A summary of the activity in gross intangible assets and goodwill is as follows (in thousands): Intangible Assets Total Intangible Assets Acquired Customer Trade Name Goodwill Balance as of October 2, 2020 $ 428,704 $ 179,434 $ 245,870 $ 3,400 $ 315,012 Currency translation adjustment — — — — 326 Balance as of January 1, 2021 $ 428,704 $ 179,434 $ 245,870 $ 3,400 $ 315,338
Summary of Estimated Amortization of Intangible Assets in Future Fiscal Years	As of January 1, 2021, our estimated amortization of our intangible assets in future fiscal years was as follows (in thousands): 2021 Remaining 2022 2023 2024 2025 Thereafter Total Amortization expense $ 34,220 33,433 26,048 15,410 3,489 2,905 $ 115,505

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	3 Months Ended
	Jan. 01, 2021
Earnings Per Share [Abstract]
Computation for Basic and Diluted Net Loss Per Share of Common Stock	The following table sets forth the computation for basic and diluted net loss per share of common stock (in thousands, except per share data): Three Months Ended January 1, 2021 January 3, 2020 Numerator: Net loss attributable to common stockholders $ (8,968) $ (28,362) Denominator: Weighted average common shares outstanding-basic 67,756 66,240 Dilutive effect of stock options, restricted stock, restricted stock units and warrants — — Weighted average common shares outstanding-diluted 67,756 66,240 Net loss to common stockholders per share-Basic: $ (0.13) $ (0.43) Net loss to common stockholders per share-Diluted: $ (0.13) $ (0.43)

Restructurings - (Tables)

Restructurings - (Tables)	3 Months Ended
	Jan. 01, 2021
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs	The following is a summary of the restructuring charges incurred during the three months ended January 3, 2020 (in thousands): Three Months Ended January 3, Employee related expenses and adjustments $ 1,160 Facility related expenses 74 Total restructuring charges $ 1,234
Schedule of Restructuring Reserve by Type of Cost	Details of the 2019 Plan accrual activity for the three months ended January 1, 2021 are as follows (in thousands): Employee-Related Expense (1) Facility-Related Expense (2) Total Balance as of October 2, 2020 $ 235 $ 26 $ 261 Charges and adjustments — — — Charges paid/settled/other 11 (26) (15) Balance as of January 1, 2021 $ 246 $ — $ 246 (1) Primarily includes severance charges associated with the reduction of our workforce in certain facilities. (2) Primarily includes activities associated with the closure of certain facilities, including any associated asset impairments and contract termination costs.

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Jan. 01, 2021
Share-based Payment Arrangement [Abstract]
Effects of Stock-Based Compensation Expense Related to Stock-Based Awards to Employees and Nonemployees	The following table shows a summary of share-based compensation expense included in the condensed consolidated statements of operations (in thousands): Three Months Ended January 1, January 3, Cost of revenue $ 871 $ 962 Research and development 3,554 2,907 Selling, general and administrative 5,706 4,281 Total share-based compensation expense $ 10,131 $ 8,150
Share-based Payment Arrangement, Option, Activity [Table Text Block]	A summary of stock option activity for the three months ended January 1, 2021 is as follows (in thousands, except per share amounts and contractual term): Number of Shares Weighted-Average Exercise Price per Share Weighted-Average Remaining Contractual Term (in Years) Aggregate Intrinsic Value Options outstanding as of October 2, 2020 325 $ 15.12 Exercised (10) 17.50 Forfeited, canceled or expired — — Options outstanding as of January 1, 2021 315 $ 15.05 6.85 $ 12,598 Options vested & expected to vest as of January 1, 2021 315 15.05 6.85 12,598 Options exercisable as of January 1, 2021 220 $ 14.61 7.72 $ 8,895
Summary of Restricted Stock, Restricted Stock Unit and Performance-based Restricted Stock Unit Activity	A summary of RSAs, RSUs and PRSUs activity for the three months ended January 1, 2021 is as follows: Number of RSAs, RSUs and PRSUs Weighted- Balance as of October 2, 2020 2,788 $ 20.84 Granted 907 29.30 Vested and released (782) 19.85 Forfeited, canceled or expired (30) 25.68 Balance as of January 1, 2021 2,883 $ 23.72

Geographic and Significant Cu_2

Geographic and Significant Customer Information (Tables)	3 Months Ended
	Jan. 01, 2021
Segment Reporting [Abstract]
Long-lived Assets by Geographic Areas	For information about our revenue in different geographic regions, based upon customer locations, see Note 2 - Revenue . Information about net property and equipment in different geographic regions is presented below (in thousands): January 1, October 2, United States $ 97,547 $ 99,118 Europe (1) 12,963 13,129 Other Countries (2) 5,443 6,619 Total $ 115,953 $ 118,866 (1) Europe primarily represents Finland, France, Germany, Ireland and Italy. (2) Other than the United States and Europe, no country or region represented greater than 10% of the total net property and equipment as of the dates presented.
Schedule of Revenue by Major Customers by Reporting Segments	The following is a summary of customer concentrations as a percentage of revenue and accounts receivable as of and for the periods presented: Three Months Ended Revenue January 1, January 3, Customer A 14% 16 % Accounts Receivable January 1, October 2, Customer A 24 % 20 % Customer B 11 % 8 %

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Oct. 02, 2020
New Accounting Pronouncement, Early Adoption [Line Items]
Fiscal Period, Policy [Policy Text Block]	We have a 52- or 53-week fiscal year ending on the Friday closest to the last day of September. Fiscal year 2021 includes 52 weeks and fiscal year 2020 included 53 weeks. To offset the effect of holidays, for fiscal years in which there are 53 weeks, we include the extra week arising in such fiscal years in the first fiscal quarter. Our first fiscal quarter ended January 1, 2021 included 13 weeks and the first fiscal quarter ended January 3, 2020 had 14 weeks.
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	$ 122	$ 347
Accounts Receivable, Allowance for Credit Loss	$ 100

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Oct. 02, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 148,504	$ 119,097
Contract liabilities	7,370		$ 9,861
Increase (decrease) in contract with customer liability	(2,491)
Amounts included in contract liabilities at the beginning of the period	$ 5,300
Net change in contract liabilities (percentage)	(25.00%)
Other Noncurrent Liabilities [Member]
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 3,500		$ 3,500
United States
Disaggregation of Revenue [Line Items]
Revenue	63,982	53,951
China
Disaggregation of Revenue [Line Items]
Revenue	42,376	37,341
Asia Pacific, excluding China
Disaggregation of Revenue [Line Items]
Revenue	21,773	18,820
Other Countries
Disaggregation of Revenue [Line Items]
Revenue	20,373	8,985
Industrial & Defense
Disaggregation of Revenue [Line Items]
Revenue	61,618	50,482
Data Center
Disaggregation of Revenue [Line Items]
Revenue	35,354	23,013
Telecom
Disaggregation of Revenue [Line Items]
Revenue	$ 51,532	$ 45,602

Investments - Other Investments

Investments - Other Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Oct. 02, 2020
Equity Securities without Readily Determinable Fair Value [Line Items]
Income (Loss) from Equity Method Investments	$ (4,803)	$ (3,749)
Equity Securities | Compute
Equity Securities without Readily Determinable Fair Value [Line Items]
Equity Method Investments	10,400		$ 15,200
Income (Loss) from Equity Method Investments	(4,800)	$ (3,700)
Preferred Stock | Privately Held Manufacturing Company
Equity Securities without Readily Determinable Fair Value [Line Items]
Investment cost basis	$ 2,500		$ 2,500
Compute | Equity Securities
Equity Securities without Readily Determinable Fair Value [Line Items]
Noncontrolling interest ownership percentage	20.00%

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 244,629	$ 223,850
Total liabilities measured at fair value		25,312
Common stock warrant liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value		25,312
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	77,316	68,620
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	18,585	20,139
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	148,728	135,091
Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	18,585	20,139
Total liabilities measured at fair value		0
Active Markets for Identical Assets (Level 1) | Common stock warrant liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value		0
Active Markets for Identical Assets (Level 1) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Active Markets for Identical Assets (Level 1) | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	18,585	20,139
Active Markets for Identical Assets (Level 1) | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	226,044	203,711
Total liabilities measured at fair value		0
Observable Inputs (Level 2) | Common stock warrant liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value		0
Observable Inputs (Level 2) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	77,316	68,620
Observable Inputs (Level 2) | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Observable Inputs (Level 2) | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	148,728	135,091
Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Total liabilities measured at fair value		25,312
Unobservable Inputs (Level 3) | Common stock warrant liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value		25,312
Unobservable Inputs (Level 3) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Unobservable Inputs (Level 3) | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Unobservable Inputs (Level 3) | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 0	$ 0

Fair Value Fair Value - Quantit

Fair Value Fair Value - Quantitative Information Used in Fair Value Calculation of Level 3 Liabilities (Details) - Common stock warrant liability - Black-Scholes model	Oct. 02, 2020$ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding term	2 months 12 days
Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability measurement input	0.0009
Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability measurement input	0.618
Exercise price (in dollars per share)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability measurement input	14.05
Stock price (in dollars per share)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability measurement input	33.80
Dividend rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability measurement input	0

Fair Value - Changes in Assets

Fair Value - Changes in Assets and Liabilities with Inputs Classified within Level 3 of Fair Value (Details) - Common stock warrant liability - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 25,312	$ 12,364
Net Realized/Unrealized Losses Included in Earnings	11,130	4,087
Purchases and Issuances	0	0
Sales and Settlements	(36,442)	0
Balance at end of period	$ 0	$ 16,451

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 49,245	$ 46,954
Work-in-process	9,102	9,324
Finished goods	30,668	35,306
Total inventory, net	$ 89,015	$ 91,584

Property Plant and Equipment -

Property Plant and Equipment - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 288,222	$ 284,716
Less accumulated depreciation and amortization	(172,269)	(165,850)
Property and equipment, net	115,953	118,866
Construction in process
Property, Plant and Equipment [Line Items]
Total property and equipment	16,952	16,174
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	193,112	191,953
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	21,311	19,854
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	2,742	2,659
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	18,516	18,487
Assets Held Under Finance Leases [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 35,589	$ 35,589

Property Plant and Equipment _2

Property Plant and Equipment - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Oct. 02, 2020
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 6,200	$ 7,400
Accumulated depreciation	172,269		$ 165,850
Finance Lease, Right-of-Use Asset, Accumulated Amortization	$ 3,100		$ 2,500

Debt - Additional Information (

Debt - Additional Information (Details)	3 Months Ended
	Jan. 01, 2021USD ($)
Debt Instrument [Line Items]
Principle amount	$ 700,000,000
Unamortized deferred financing costs	4,700,000
Term Loans
Debt Instrument [Line Items]
Unamortized deferred financing costs	4,496,000
Debt Instrument, Periodic Payment	$ 1,700,000
Debt Instrument, Payment Terms, Reinvestment Of Divestiture of Business Proceeds, Period	18 months
Debt Instrument, Payment Terms, Reinvestment Of Divestiture Of Business Proceeds, Transaction Completion, Period	6 months
Amount drawn	$ 657,816,000
Effective interest rate	2.40%
Principal balance	$ 664,366,000
Estimated fair value of Term Loans	644,400,000
Revolving Credit Facility
Debt Instrument [Line Items]
Unamortized deferred financing costs	300,000
Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity	160,000,000
Credit facility, remaining borrowing capacity	160,000,000
Line of Credit Facility, Covenant Terms	$ 50,000,000
Fed Funds Effective Rate Overnight Index Swap Rate [Member] | Term Loans
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
One Month London Interbank Offered Rate (LIBOR) [Member] | Term Loans
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
LIBOR Rate | Term Loans
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Minimum | LIBOR Rate | Term Loans
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%

Debt Debt - Schedule of Long-te

Debt Debt - Schedule of Long-term Debt Instruments (Details) - Term Loans $ in Thousands	3 Months Ended
	Jan. 01, 2021USD ($)
Debt Instrument [Line Items]
Principal balance	$ 664,366
Effective interest rate	2.40%
LIBOR Rate
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Margin
Debt Instrument [Line Items]
Basis spread on variable rate	0.15%

Debt - Schedule of Remained Out

Debt - Schedule of Remained Outstanding on Term Loans (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Debt Instrument [Line Items]
Unamortized deferred financing costs	$ (4,700)
Current portion	6,885	$ 6,885
Long-term, less current portion	650,931	$ 652,172
Term Loans
Debt Instrument [Line Items]
Principal balance	664,366
Unamortized discount	(2,054)
Unamortized deferred financing costs	(4,496)
Total term loans	657,816
Current portion	6,885
Long-term, less current portion	$ 650,931

Debt - Schedule of Minimum Prin

Debt - Schedule of Minimum Principal Payments under Term Loans (Details) - Term Loans $ in Thousands	Jan. 01, 2021USD ($)
Debt Instrument [Line Items]
2021 (remainder of fiscal year)	$ 5,163
2022	6,885
2023	6,885
2024	645,433
Total	$ 664,366

Intangible Assets - Summary of

Intangible Assets - Summary of Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Finite-Lived Intangible Assets [Line Items]
Total	$ 11,993	$ 13,074
Cost of Revenue
Finite-Lived Intangible Assets [Line Items]
Total	3,877	4,420
Selling, General and Administrative
Finite-Lived Intangible Assets [Line Items]
Total	$ 8,116	$ 8,654

Intangible Assets - Summary o_2

Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Finite-Lived Intangible Assets [Line Items]
Trade name (indefinite-lived)	$ 3,400	$ 3,400
Total	428,704	428,704
Less accumulated amortization	(309,799)	(297,806)
Intangible assets — net	118,905	130,898
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets	179,434	179,434
Less accumulated amortization	(155,900)	(152,100)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets	245,870	245,870
Less accumulated amortization	$ (153,900)	$ (145,700)

Intangible Assets - Summary o_3

Intangible Assets - Summary of Activity in Intangible Assets and Goodwill (Details) $ in Thousands	3 Months Ended
	Jan. 01, 2021USD ($)
Goodwill and Intangible Assets [Roll Forward]
Beginning Balance	$ 428,704
Currency translation adjustment	0
Intangible Assets, Net (Including Goodwill)	315,338
Ending Balance	428,704
Goodwill [Roll Forward]
Balance at beginning of period	315,012
Currency translation adjustment	326
Balance at end of period	315,338
Trade Names
Indefinite Lived Intangible Assets Rollforward [Roll Forward]
Beginning Balance	3,400
Currency translation adjustment	0
Ending Balance	3,400
Developed technology
Finite-lived Intangible Assets [Roll Forward]
Beginning Balance	179,434
Currency translation adjustment	0
Ending Balance	179,434
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Beginning Balance	245,870
Currency translation adjustment	0
Ending Balance	$ 245,870

Intangible Assets - Summary o_4

Intangible Assets - Summary of Estimated Amortization of Intangible Assets (Details) $ in Thousands	Jan. 01, 2021USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2021 Remaining	$ 34,220
2022	33,433
2023	26,048
2024	15,410
2025	3,489
Thereafter	2,905
Total	$ 115,505

Intangible Assets - Additional

Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 309,799	$ 297,806
Developed technology
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	155,900	152,100
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 153,900	$ 145,700

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - $ / shares	3 Months Ended
	Jan. 01, 2021	Mar. 31, 2012
Equity [Abstract]
Preferred stock, shares authorized	10,000,000
Preferred stock, par value (in usd per share)	$ 0.001
Common stock, shares authorized	300,000,000
Common stock, par value (in usd per share)	$ 0.001
Class of Warrant or Right [Line Items]
Common stock warrants (in shares)		1,281,358
Conversion of Stock, Shares Issued	857,631
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	1,281,358
Common stock warrants per share (in usd per share)		$ 14.05

Earnings (Loss) Per Share (Deta

Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Earnings Per Share [Abstract]
Fair Value Adjustment of Warrants	$ 11,130	$ 4,087
Numerator:
Net loss	(8,968)	(28,362)
Net loss attributable to common stockholders	$ (8,968)	$ (28,362)
Denominator:
Weighted average common shares outstanding-basic	67,756,000	66,240,000
Dilutive effect of options and warrants (in shares)	0	0
Weighted average common shares outstanding-diluted	67,756,000	66,240,000
Earnings Per Share, Basic [Abstract]
Loss per share - Basic	$ (0.13)	$ (0.43)
Number of antidilutive shares of common stock excluded from the calculation (in shares)	2,004,621	1,292,101

Restructurings - Additional Inf

Restructurings - Additional Information (Details) $ in Thousands	3 Months Ended
	Jan. 01, 2021USD ($)	Apr. 03, 2020employeefacility	Jan. 03, 2020USD ($)
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost			$ 1,234
2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	$ 261
Restructuring and Related Cost, Incurred Cost	0		1,300
Restructuring Reserve, Accrual Adjustment	(15)
Restructuring Reserve, Ending Balance	246
Number of positions eliminated | employee		250
Number of facilities | facility		6
Employee related expenses
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost			1,160
Employee related expenses | 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	235
Restructuring and Related Cost, Incurred Cost	0		1,200
Restructuring Reserve, Accrual Adjustment	11
Restructuring Reserve, Ending Balance	246
Facility related expenses
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost			74
Facility related expenses | 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	26
Restructuring and Related Cost, Incurred Cost	0
Restructuring Reserve, Accrual Adjustment	(26)
Restructuring Reserve, Ending Balance	$ 0
Other Costs | 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost			$ 100

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 10,131	$ 8,150
Compensation cost not yet recognized	$ 61,900
Unrecognized compensation cost period for recognition	2 years 4 months 24 days
Stock option exercises (in shares)	10
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 300
Restricted Stock Restricted Stock Units And Performance Based Restricted Stock Units[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested in period fair value	$ 31,000	$ 300
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of options granted	4 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of options granted	7 years
Maximum | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
2012 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available for grant (in shares)	18,400
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available for grant (in shares)	4,100
Unrecognized compensation cost for Employee Stock Purchase Plan	$ 700

Share-Based Compensation Share-

Share-Based Compensation Share-Based Compensation Plans - Summary of Stock Option Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Jan. 01, 2021USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $	$ 300
Number of Shares
Beginning Blance Stock options outstanding (in shares) | shares	325,000
Exercised (in shares) | shares	(10,000)
Forfeited, canceled or expired (in shares) | shares	0
Ending Balance Stock options outstanding (in shares) | shares	315,000
Weighted-Average Exercise Price per Share
Beginning Balance weighted-average exercise price per share (in usd per share) | $ / shares	$ 15.12
Exercised (in dollars per share) | $ / shares	17.50
Forfeited, canceled or expired (in dollars per share) | $ / shares	0
Ending Balance weighted-average exercise price per share (in usd per share) | $ / shares	$ 15.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term options outstanding	6 years 10 months 6 days
Aggregate intrinsic value stock options outstanding | $	$ 12,598
Options vested and expected to vest (in shares) | shares	315,000
Options vested and expected to vest (in dollars per share) | $ / shares	$ 15.05
Weighted average remaining contractual term options vested and expected to vest	6 years 10 months 6 days
Aggregate intrinsic value of options vested and expected to vest | $	$ 12,598
Options exercisable (in shares) | shares	220,000
Options exercisable (in dollars per share) | $ / shares	$ 14.61
Weighted-average remaining contractual term of options exercisable	7 years 8 months 19 days
Options exercisable intrinsic value | $	$ 8,895

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Restricted Stock, Restricted Stock Unit and Performance-based Restricted Stock Unit Activity (Details) shares in Thousands	3 Months Ended
	Jan. 01, 2021$ / sharesshares
Number of RSAs, RSUs and PRSUs (in thousands)
Balance at beginning of period (in shares) | shares	2,788
Granted (in shares) | shares	907
Vested and released (in shares) | shares	(782)
Forfeited, canceled or expired (in shares) | shares	(30)
Balance at end of period (in shares) | shares	2,883
Weighted- Average Grant Date Fair Value
Balance at beginning of period (in usd per share) | $ / shares	$ 20.84
Granted (in usd per share) | $ / shares	29.30
Vested and released (in usd per share) | $ / shares	19.85
Forfeited, canceled or expired (in usd per share) | $ / shares	25.68
Balance at end of period (in usd per share) | $ / shares	$ 23.72

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Investments, Owned, Federal Income Tax Note [Line Items]
Effective Income Tax Rate Reconciliation, Percent	(8.10%)	(5.10%)
Income tax expense	$ 674	$ 1,386
Unrecognized tax benefit	$ 300
Effective tax rate	21.00%
Deferred tax assets	$ 39,800

Geographic and Significant Cu_3

Geographic and Significant Customer Information - Additional Information (Details)	3 Months Ended
	Jan. 01, 2021segment
Segment Reporting [Abstract]
Number of reportable operating segment	1

Geographic and Significant Cu_4

Geographic and Significant Customer Information - Summary of Different Geographic Regions (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 115,953	$ 118,866
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	97,547	99,118
Other Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	5,443	6,619
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 12,963	$ 13,129

Geographic and Significant Cu_5

Geographic and Significant Customer Information - Summary of Customer Concentrations as Percentage of Revenue and Accounts Receivable (Details) - Customer Concentration Risk	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Revenue
Revenue from External Customer [Line Items]
Concentration risk, percentage	55.00%	60.00%
Revenue | Customer A
Revenue from External Customer [Line Items]
Concentration risk, percentage	14.00%	16.00%
Accounts Receivable | Customer A
Revenue from External Customer [Line Items]
Concentration risk, percentage	24.00%	20.00%
Accounts Receivable | Customer B
Revenue from External Customer [Line Items]
Concentration risk, percentage	11.00%	8.00%

Uncategorized Items - mtsi-2021

Label	Element	Value
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 75,519,000