Sonos (SONO) 10-Q 13 May 21 2021 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Apr. 03, 2021	May 01, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Apr. 3, 2021
Current Fiscal Year End Date	--04-03
Document Transition Report	false
Entity File Number	001-38603
Entity Registrant Name	SONOS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	03-0479476
Entity Address, Address Line One	614 Chapala Street
Entity Address, City or Town	Santa Barbara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	93101
City Area Code	805
Local Phone Number	965-3001
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	SONO
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		124,597,844
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001314727

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Apr. 03, 2021	Oct. 03, 2020
Current assets:
Cash and cash equivalents	$ 638,927	$ 407,100
Restricted cash	192	191
Accounts receivable, net of allowances	69,690	54,935
Inventories	139,581	180,830
Prepaids and other current assets	31,763	17,321
Total current assets	880,153	660,377
Property and equipment, net	65,509	60,784
Operating lease right-of-use assets	39,061	42,342
Goodwill	15,545	15,545
Intangible assets, net	25,434	26,394
Deferred tax assets	1,984	1,800
Other noncurrent assets	20,600	8,809
Total assets	1,048,286	816,051
Current liabilities:
Accounts payable	203,585	250,328
Accrued expenses	61,659	45,049
Accrued compensation	46,665	44,517
Short-term debt	0	6,667
Deferred revenue, current	18,392	15,304
Other current liabilities	40,770	31,150
Total current liabilities	371,071	393,015
Operating lease liabilities, noncurrent	39,361	50,360
Long-term debt	0	18,251
Deferred revenue, noncurrent	52,497	47,085
Deferred tax liabilities	2,394	2,434
Other noncurrent liabilities	3,695	7,067
Total liabilities	469,018	518,212
Commitments and contingencies (Note 7)
Stockholders’ equity:
Common stock, $0.001 par value	126	114
Treasury stock	(26,023)	(20,886)
Additional paid-in capital	684,988	548,993
Accumulated deficit	(78,979)	(228,492)
Accumulated other comprehensive loss	(844)	(1,890)
Total stockholders’ equity	579,268	297,839
Total liabilities and stockholders’ equity	$ 1,048,286	$ 816,051

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Apr. 03, 2021	Oct. 03, 2020
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Income Statement [Abstract]
Revenue	$ 332,949	$ 175,098	$ 978,532	$ 737,181
Cost of revenue	167,173	102,089	513,331	436,552
Gross profit	165,776	73,009	465,201	300,629
Operating expenses
Research and development	56,370	49,593	108,717	102,120
Sales and marketing	57,205	50,504	131,658	127,928
General and administrative	39,806	26,119	75,047	56,327
Total operating expenses	153,381	126,216	315,422	286,375
Operating income (loss)	12,395	(53,207)	149,779	14,254
Other income (expense), net
Interest income	44	874	80	1,873
Interest expense	(182)	(374)	(448)	(827)
Other income (expense), net	(1,578)	(1,423)	2,680	3,001
Total other income (expense), net	(1,716)	(923)	2,312	4,047
Income (loss) before provision for (benefit from) income taxes	10,679	(54,130)	152,091	18,301
Provision for (benefit from) income taxes	(6,542)	(1,810)	2,578	(153)
Net income (loss)	17,221	(52,320)	149,513	18,454
Net income (loss) attributable to common stockholders:
Basic	17,221	(52,320)	149,513	18,454
Diluted	$ 17,221	$ (52,320)	$ 149,513	$ 18,454
Basic (in USD per share)	$ 0.14	$ (0.48)	$ 1.26	$ 0.17
Diluted (in USD per share)	$ 0.12	$ (0.48)	$ 1.09	$ 0.16
Weighted-average shares used in computing net loss per share attributable to common stockholders:
Basic (in shares)	121,880,615	109,515,049	118,745,569	109,249,866
Diluted (in shares)	143,055,546	109,515,049	136,849,846	117,819,569
Total comprehensive income (loss)
Net income	$ 17,221	$ (52,320)	$ 149,513	$ 18,454
Change in foreign currency translation adjustment	199	(431)	1,046	(950)
Comprehensive income (loss)	$ 17,420	$ (52,751)	$ 150,559	$ 17,504

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss
Balance, beginning of period (in shares) at Sep. 28, 2019		109,623,417		1,020,775
Balance, beginning of period at Sep. 28, 2019	$ 280,928	$ 110	$ 502,757	$ (13,498)	$ (208,377)	$ (64)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)		1,561,696
Issuance of common stock pursuant to equity incentive plans	7,969	$ 1	7,968
Purchase of common stock (in shares)				(227,241)
Repurchase of common stock	(2,926)			$ (2,926)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs") (in shares)				(144,908)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs")	(2,152)			$ (2,152)
Stock-based compensation expense	13,204		13,204
Net income (loss)	70,775				70,775
Change in foreign currency translation adjustment	(519)					(519)
Balance, end of period (in shares) at Dec. 28, 2019		111,185,113		1,392,924
Balance, ending of period at Dec. 28, 2019	367,279	$ 111	523,929	$ (18,576)	(137,602)	(583)
Balance, beginning of period (in shares) at Sep. 28, 2019		109,623,417		1,020,775
Balance, beginning of period at Sep. 28, 2019	280,928	$ 110	502,757	$ (13,498)	(208,377)	(64)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	18,454
Change in foreign currency translation adjustment	(950)
Balance, end of period (in shares) at Mar. 28, 2020		112,733,727		3,884,652
Balance, ending of period at Mar. 28, 2020	299,804	$ 113	541,937	$ (51,310)	(189,922)	(1,014)
Balance, beginning of period (in shares) at Dec. 28, 2019		111,185,113		1,392,924
Balance, beginning of period at Dec. 28, 2019	367,279	$ 111	523,929	$ (18,576)	(137,602)	(583)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)		1,548,614
Issuance of common stock pursuant to equity incentive plans	4,616	$ 2	4,614
Purchase of common stock (in shares)				(2,309,604)
Repurchase of common stock	(30,290)			$ (30,290)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs") (in shares)				(182,124)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs")	(2,444)			$ (2,444)
Stock-based compensation expense	13,394		13,394
Net income (loss)	(52,320)				(52,320)
Change in foreign currency translation adjustment	(431)					(431)
Balance, end of period (in shares) at Mar. 28, 2020		112,733,727		3,884,652
Balance, ending of period at Mar. 28, 2020	299,804	$ 113	541,937	$ (51,310)	(189,922)	(1,014)
Balance, beginning of period (in shares) at Oct. 03, 2020		113,915,233		1,571,138
Balance, beginning of period at Oct. 03, 2020	297,839	$ 114	548,993	$ (20,886)	(228,492)	(1,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)		7,075,338
Issuance of common stock pursuant to equity incentive plans	69,505	$ 7	69,498
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs") (in shares)				(307,980)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs")	(5,118)			$ (5,118)
Stock-based compensation expense	14,844		14,844
Net income (loss)	132,292				132,292
Change in foreign currency translation adjustment	847					847
Balance, end of period (in shares) at Jan. 02, 2021		120,990,571		1,879,118
Balance, ending of period at Jan. 02, 2021	510,209	$ 121	633,335	$ (26,004)	(96,200)	(1,043)
Balance, beginning of period (in shares) at Oct. 03, 2020		113,915,233		1,571,138
Balance, beginning of period at Oct. 03, 2020	$ 297,839	$ 114	548,993	$ (20,886)	(228,492)	(1,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)	10,829,628
Retirement of treasury stock (in shares)	1,017,308
Purchase of common stock (in shares)	(19,547)
Net income (loss)	$ 149,513
Change in foreign currency translation adjustment	1,046
Balance, end of period (in shares) at Apr. 03, 2021		125,716,622		1,268,563
Balance, ending of period at Apr. 03, 2021	579,268	$ 126	684,988	$ (26,023)	(78,979)	(844)
Balance, beginning of period (in shares) at Jan. 02, 2021		120,990,571		1,879,118
Balance, beginning of period at Jan. 02, 2021	510,209	$ 121	633,335	$ (26,004)	(96,200)	(1,043)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)		5,743,359
Issuance of common stock pursuant to equity incentive plans	49,661	$ 6	49,655
Retirement of treasury stock (in shares)		1,017,308		1,017,308
Retirement of treasury stock	0	$ (1)	(14,365)	$ 14,366
Purchase of common stock (in shares)				(19,547)
Repurchase of common stock	(682)			$ (682)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs") (in shares)				(387,206)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs")	(13,703)			$ (13,703)
Stock-based compensation expense	16,363		16,363
Net income (loss)	17,221				17,221
Change in foreign currency translation adjustment	199					199
Balance, end of period (in shares) at Apr. 03, 2021		125,716,622		1,268,563
Balance, ending of period at Apr. 03, 2021	$ 579,268	$ 126	$ 684,988	$ (26,023)	$ (78,979)	$ (844)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Cash flows from operating activities
Net income	$ 149,513	$ 18,454
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	16,725	18,831
Stock-based compensation expense	31,207	26,598
Other	344	2,989
Deferred income taxes	(146)	74
Foreign currency transaction gain	(1,047)	(420)
Changes in operating assets and liabilities:
Accounts receivable, net	(13,260)	63,344
Inventories	39,631	106,245
Other assets	(21,982)	(9,690)
Accounts payable and accrued expenses	(36,485)	(191,070)
Accrued compensation	2,087	(14,443)
Deferred revenue	8,374	3,729
Other liabilities	992	10,727
Net cash provided by operating activities	175,953	35,368
Cash flows from investing activities
Purchases of property and equipment, intangible and other assets	(19,927)	(25,800)
Cash paid for acquisition, net of acquired cash	0	(36,289)
Net cash used in investing activities	(19,927)	(62,089)
Cash flows from financing activities
Repayments of borrowings	(25,000)	(3,333)
Payments for repurchase of common stock	(682)	(33,216)
Proceeds from exercise of common stock options	119,166	12,585
Payments for repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock units	(18,821)	(4,596)
Net cash provided by (used in) financing activities	74,663	(28,560)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1,139	(107)
Net increase (decrease) in cash, cash equivalents and restricted cash	231,828	(55,388)
Cash, cash equivalents and restricted cash
Beginning of period	407,291	338,820
End of period	639,119	283,432
Supplemental disclosure
Cash paid for interest	357	851
Cash paid for taxes, net of refunds	3,255	1,025
Cash paid for amounts included in the measurement of lease liabilities	11,683	7,346
Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment in accounts payable and accrued expenses	8,910	3,270
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 1,622	$ 75,642

Business Overview and Basis of

Business Overview and Basis of Presentation	6 Months Ended
	Apr. 03, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Overview and Basis of Presentation	Business Overview and Basis of Presentation Description of business Sonos, Inc. and its wholly owned subsidiaries (collectively, “Sonos,” the “Company,” “we,” “us” or “our”) designs, develops, manufactures, and sells audio products and services. The Sonos sound system provides customers with an immersive listening experience created by the design of its speakers and components, a proprietary software platform, and the ability to stream content from a variety of sources over the customer’s wireless network or over Bluetooth. The Company’s products are sold through third-party physical retailers, including custom installers of home audio systems, select e-commerce retailers, and its website sonos.com. The Company’s products are distributed in over 50 countries through its wholly owned subsidiaries: Sonos Europe B.V. in the Netherlands, Beijing Sonos Technology Co. Ltd. in China, Sonos Japan GK in Japan, and Sonos Australia Pty Ltd. in Australia. Basis of presentation and preparation The accompanying condensed consolidated financial statements are unaudited. The condensed consolidated balance sheet as of October 3, 2020 has been derived from the audited consolidated financial statements of the Company. The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial information and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all the information and footnotes required by U.S. GAAP for annual financial statements. They should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended October 3, 2020 (the “Annual Report”), filed with the SEC on November 23, 2020. In management’s opinion, the accompanying unaudited condensed consolidated financial statements include all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the Company’s financial position, its results of operations, and its cash flows for the interim periods presented. The results of operations for the three and six months ended April 3, 2021 are not necessarily indicative of the results to be expected for the full fiscal year or any other period. The Company operates on a 52- week or 53- week fiscal year ending on the Saturday nearest September 30 each year. The Company’s fiscal year is divided into four quarters of 13 weeks, each beginning on a Sunday and containing two 4-week periods followed by a 5-week period. An additional week is included in the fourth fiscal quarter approximately every five years to realign fiscal quarters with calendar quarters. This last occurred in the fourth quarter of the Company’s fiscal year ended October 3, 2020 and will reoccur in the fiscal year ending October 3, 2026. The six months ended April 3, 2021 and March 28, 2020 spanned 26 weeks each. As used in this Quarterly Report on Form 10-Q, “fiscal 2021” refers to the fiscal year ending October 2, 2021 and “fiscal 2020” refers to the fiscal year ended October 3, 2020. Use of estimates and judgments The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and expected trends. In March 2020, the outbreak of the novel coronavirus (COVID-19) was declared a pandemic. While the nature of the situation is dynamic, the Company has considered the impact when developing its estimates and assumptions noted above. Actual results and outcomes may differ from management's estimates and assumptions.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Apr. 03, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies There have been no changes in the Company’s significant accounting policies, recently adopted accounting pronouncements or recent accounting pronouncements pending adoption from those disclosed in the Annual Report, except as noted below. Recently adopted accounting pronouncements In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments, and it subsequently issued amendments to the initial guidance (collectively referred to as "Topic 326"), which provide a new impairment model that requires measurement and recognition of expected credit losses for most financial assets and certain other instruments, including accounts receivable. The Company adopted this standard effective October 4, 2020, using a modified retrospective approach. Under the new standard, the allowance for credit losses is based on the Company's assessment of collectibility of accounts, including consideration of the age of invoices, each customer's expected ability to pay and collection history, customer-specific information and current economic conditions that may impact a customer's ability to pay. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. In November 2018, the FASB issued ASU No. 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard resolves the diversity in practice concerning whether certain transactions between collaborative arrangement participants should be accounted for as revenue under Accounting Standards Codification 606, Revenue from Contracts with Customers ("Topic 606"). This standard specifies when a participant is a customer in a collaboration, adds guidance for unit of account to align with Topic 606 and provides presentation guidance for collaborative arrangements. The Company adopted this standard in the first quarter of fiscal 2021. The adoption did not have a material impact on the Company's consolidated financial statements. Recent accounting pronouncements pending adoption In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This standard simplifies the accounting for income taxes by removing certain exceptions to the general principles in Accounting Standards Codification Topic 740 ("ASC 740") as well as by improving consistent application of the topic by clarifying and amending existing guidance. This standard is effective for the Company in the first quarter of fiscal 2022, with early adoption permitted. The Company is currently evaluating the timing of adoption and impact on the Company's consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Apr. 03, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The carrying values of the Company’s financial instruments, including accounts receivable and accounts payable, approximate their fair values due to the short period of time to maturity or repayment. The following table summarizes fair value measurements by level for the assets measured at fair value on a recurring basis as of April 3, 2021 and October 3, 2020: April 3, 2021 (In thousands) Level 1 Level 2 Level 3 Total Assets: Money market funds (cash equivalents) $ 472,425 $ — $ — $ 472,425 October 3, 2020 (In thousands) Level 1 Level 2 Level 3 Total Assets: Money market funds (cash equivalents) $ 281,380 $ — $ — $ 281,380

Revenue and Geographic Informat

Revenue and Geographic Information	6 Months Ended
	Apr. 03, 2021
Revenue from Contract with Customer [Abstract]
Revenue and Geographic Information	Revenue and Geographic Information Disaggregation of revenue Revenue by geographical region also includes the applicable service revenue for software upgrades and cloud-based services attributable to each region and is based on ship-to address, as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) Americas $ 193,938 $ 101,964 $ 561,177 $ 405,158 Europe, Middle East and Africa (“EMEA”) 114,306 57,252 354,313 269,990 Asia Pacific (“APAC”) 24,705 15,882 63,042 62,033 Total revenue $ 332,949 $ 175,098 $ 978,532 $ 737,181 Revenue is attributed to individual countries based on ship-to address and also includes the applicable service revenue for software upgrades and cloud-based services attributable to each country. Revenue by significant countries is as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) United States $ 178,019 $ 94,755 $ 508,915 $ 372,028 Other countries 154,930 80,343 469,617 365,153 Total revenue $ 332,949 $ 175,098 $ 978,532 $ 737,181 Revenue by product category also includes the applicable service revenue for software upgrades and cloud-based services attributable to each product category. Revenue by major product category is as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) Sonos speakers $ 267,534 $ 116,367 $ 795,050 $ 583,044 Sonos system products 52,062 47,202 149,820 108,723 Partner products and other revenue 13,353 11,529 33,662 45,414 Total revenue $ 332,949 $ 175,098 $ 978,532 $ 737,181

Balance Sheet Components

Balance Sheet Components	6 Months Ended
	Apr. 03, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance Sheet Components	Balance Sheet Components Accounts receivable, net of allowances Accounts receivable, net of allowances, consist of the following: April 3, 2021 October 3, 2020 (In thousands) Accounts receivable $ 91,737 $ 73,757 Allowance for credit losses (1,435) (1,307) Allowance for sales incentives (20,612) (17,515) Accounts receivable, net of allowances $ 69,690 $ 54,935 Inventories Inventories consist of the following: April 3, 2021 October 3, 2020 (In thousands) Finished goods $ 131,541 $ 172,184 Component parts 8,040 8,646 Inventories $ 139,581 $ 180,830 The Company writes down inventory as a result of excess and obsolete inventories, or when it believes that the net realizable value of inventories is less than the carrying value. Intangible assets The following table reflects the changes in the net carrying amount of the components of intangible assets associated with the Company's acquisition activity: April 3, 2021 Gross Carrying Amount Accumulated Amortization Net Carrying Value Weighted-Average Remaining Life (In thousands, except weighted-average remaining life) Technology $ 7,789 $ (2,468) $ 5,321 3.10 Other 39 (26) 13 0.67 Total finite-lived intangible assets 7,828 (2,494) 5,334 3.09 In-process research and development and other intangible assets not subject to amortization 20,100 — 20,100 Total intangible assets $ 27,928 $ (2,494) $ 25,434 The following table summarizes estimated future amortization expense of the Company's intangible assets as of April 3, 2021: Fiscal years ending Future Amortization Expense (In thousands) Remainder of fiscal 2021 $ 971 2022 1,927 2023 1,246 2024 1,020 2025 170 2026 and thereafter — Total future amortization expense $ 5,334 Accrued expenses Accrued expenses consist of the following: April 3, 2021 October 3, 2020 (In thousands) Accrued advertising and marketing $ 9,999 $ 10,609 Accrued taxes 9,294 6,252 Accrued inventory 7,864 2,843 Accrued manufacturing, logistics and product development 12,366 9,753 Accrued general and administrative expenses 16,555 10,068 Other accrued payables 5,581 5,524 Total accrued expenses $ 61,659 $ 45,049 Deferred revenue Amounts invoiced in advance of revenue recognition are recorded as deferred revenue on the condensed consolidated balance sheets. Deferred revenue primarily relates to revenue allocated to unspecified software upgrades and cloud-based services. The following table presents the changes in the Company’s deferred revenue for the six months ended April 3, 2021 and March 28, 2020: April 3, March 28, (In thousands) Deferred revenue, beginning of period $ 62,389 $ 56,449 Recognition of revenue included in beginning of period deferred revenue (7,883) (6,904) Revenue deferred, net of revenue recognized on contracts in the respective period 16,383 10,798 Deferred revenue, end of period $ 70,889 $ 60,343 The Company expects the following recognition of deferred revenue as of April 3, 2021: For the fiscal years ending 2021 2022 2023 2024 2025 and Beyond Total (In thousands) Deferred revenue expected to be recognized $ 10,473 $ 15,360 $ 13,432 $ 11,382 $ 20,242 $ 70,889 Other current liabilities Other current liabilities consist of the following: April 3, 2021 October 3, 2020 (In thousands) Reserve for returns $ 20,572 $ 14,195 Short-term operating lease liabilities 10,718 10,910 Product warranty liability 4,856 3,628 Other 4,624 2,417 Total other current liabilities $ 40,770 $ 31,150 The following table presents the changes in the Company’s warranty liability for the six months ended April 3, 2021 and March 28, 2020: April 3, 2021 March 28, 2020 (In thousands) Warranty liability, beginning of period $ 3,628 $ 3,254 Provision for warranties issued during the period 8,844 7,098 Settlements of warranty claims during the period (7,616) (6,608) Warranty liability, end of period $ 4,856 $ 3,744

Debt

Debt	6 Months Ended
	Apr. 03, 2021
Debt Disclosure [Abstract]
Debt	Debt The Company's debt obligation consists of the Secured Credit Facility with J.P. Morgan Chase Bank, N.A. (the “Credit Facility”). In January 2021, the Company repaid all of its outstanding principal balance of $24.9 million under the J.P. Morgan Chase Bank, N.A. Secured Term Loan (the "Term Loan") which had an original maturity date of October 2021. As of April 3, 2021, the Company did not have any remaining short- or long-term debt obligations, and as of October 3, 2020 the Company’s short- and long-term debt obligations were as follows: October 3, 2020 Rate Balance (In thousands, except percentages) Term loan (1) 2.4 % $ 25,000 Unamortized debt issuance costs (2) (82) Total indebtedness 24,918 Less short-term portion (6,667) Long-term debt $ 18,251 (1) Original maturity date of October 2021 and bore interest at a variable rate equal to an adjusted LIBOR plus 2.25%, payable quarterly. (2) Debt issuance costs were recorded as a debt discount and recorded as interest expense over the term of the agreement. The Credit Facility allows the Company to borrow up to $80.0 million, restricted to the value of the borrowing base, which is based on the value of inventory and accounts receivable and is subject to quarterly redetermination. The Credit Facility matures in October 2021 and may be drawn as Commercial Bank Floating Rate Loans (at the higher of prime rate or adjusted LIBOR plus 2.50%) or Eurocurrency Loans (at LIBOR plus an applicable margin). As of both April 3, 2021 and October 3, 2020, the Company did not have any outstanding borrowings and had $2.9 million and $0.5 million, respectively, in undrawn letters of credit that reduce the availability under the Credit Facility. Debt obligations under the Credit Facility require the Company to maintain a consolidated fixed charge ratio of at least 1.0, restrict distribution of dividends unless certain conditions are met, such as having a fixed charge ratio of at least 1.15, and require financial statement reporting and delivery of borrowing base certificates. As of April 3, 2021 and October 3, 2020, the Company was in compliance with all financial covenants. The Credit Facility is collateralized by eligible inventory and accounts receivable of the Company, as well as the Company's intellectual property including patents and trademarks.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Apr. 03, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal proceedings From time to time, the Company is involved in legal proceedings in the ordinary course of business, including claims relating to employee relations, business practices and patent infringement. Litigation can be expensive and disruptive to normal business operations. Moreover, the results of complex legal proceedings are difficult to predict, and the Company’s view of these matters may change in the future as the litigation and events related thereto unfold. The Company expenses legal fees as incurred. The Company records a provision for contingent losses when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. An unfavorable outcome to any legal matter, if material, could have an adverse effect on the Company’s operations or its financial position, liquidity or results of operations. On January 7, 2020, the Company filed a complaint with the U.S. International Trade Commission ("ITC") against Alphabet Inc. ("Alphabet") and Google LLC ("Google") and a lawsuit in the U.S. District Court for the Central District of California against Google. The complaint and lawsuit each allege infringement of certain Sonos patents related to its smart speakers and related technology. On February 6, 2020, the ITC initiated a formal investigation into the Company’s claims. Google and Alphabet filed an initial answer in the ITC action on February 27, 2020 and an amended answer on April 3, 2020, denying infringement and alleging that the asserted patents are invalid. The ITC case went to trial at the end of February 2021, and we expect an initial determination from the administrative law judge in the ITC case on or about August 13, 2021, which date was extended from the original date of May 11, 2021 as a result of COVID-related scheduling issues and workload increases pursuant to an order from the Chief Administrative Law Judge in May 2021. On March 4, 2020, the California District Court stayed the district court proceeding pending resolution of the ITC investigation. On March 11, 2020, Google filed an answer in the California District Court, denying infringement and alleging that the asserted patents are invalid. On September 28, 2020, Google filed for a declaratory judgement of non-infringement in the U.S. District Court for the Northern District of California related to five different Sonos patents. On September 29, 2020, the Company filed a lawsuit against Google in the U.S. District Court for Western District of Texas, alleging infringement of those five Sonos patents and seeking monetary damages and other non-monetary relief. On December 1, 2020, the Company filed a lawsuit against Google Germany GmbH and Google Ireland Ltd. in the regional court of Hamburg, Germany, alleging infringement of a Sonos patent related to control of playback of media by mobile and playback devices and seeking non-monetary relief. The Hamburg Court issued a judgment on February 25, 2021 declining to issue a preliminary injunction against Google Germany GmbH, although such court did issue a preliminary injunction against Google Ireland Ltd. in April 2021. See Note 14 "Subsequent Event" for more details. On June 11, 2020, Google filed a lawsuit in the U.S. District Court for the Northern District of California against the Company, alleging infringement of five Google patents generally related to noise cancellation, digital rights management, media search and wireless relays and seeking monetary damages and other non-monetary relief. On November 2, 2020, the California District Court granted Sonos’ motion and dismissed Google’s allegation of infringement of one of such five Google patents, a patent generally related to media search, finding that the invention at issue is patent ineligible. On June 12, 2020, Google filed lawsuits in District Court Munich I against Sonos Europe B.V. and Sonos, Inc., alleging infringement of two Google patents generally related to digital rights management and search notifications, and seeking monetary damages and an injunction preventing sales of any infringing Sonos products. On January 14, 2021, Google amended its infringement complaint related to the search notifications patent to relate to a limited version of the claims, in view of prior art cited by the Company. On March 3, 2021, the District Court Munich stayed a case for infringement of the search notifications patent pending the outcome of a nullity action based on doubt as to the validity of the patent. On August 21, 2020, Google filed a lawsuit against Sonos, Inc. in Canada, alleging infringement of one Google patent generally related to noise cancellation technology. On August 21, 2020, Google filed a lawsuit against Sonos Europe B.V. and Sonos, Inc. in France, alleging infringement of two Google patents generally related to digital rights management and search notifications, and seeking monetary damages and an injunction preventing sales of any infringing Sonos products. On February 8, 2021, Google withdrew its infringement allegations regarding the search notifications patent in view of prior art brought to the attention of the court by the Company. In August 2020, Google filed a lawsuit against Sonos Europe B.V. and Sonos, Inc. in the Netherlands alleging infringement of a Google patent related to search notifications, and seeking monetary damages and an injunction preventing sales of any infringing Sonos products. In September 2020, Google filed a lawsuit against Sonos Europe B.V. in the Netherlands, alleging infringement of a Google patent related to digital rights management, and seeking monetary damages and enforcement of an injunction preventing sales of any infringing Sonos products, which was transferred to the Midden-Netherlands court on March 22, 2021 following the grant of the Company's challenge to improper jurisdiction. A range of loss, if any, associated with these matters is not probable or reasonably estimable as of April 3, 2021 and October 3, 2020. On March 10, 2017, Implicit, LLC (“Implicit”) filed a patent infringement action in the United States District Court, District of Delaware against the Company. Implicit is asserting that the Company infringed on two patents in this case. The Company denies the allegations. There is no assurance of a favorable outcome and the Company’s business could be adversely affected as a result of a finding that the Company patents-in-suit are invalid and/or unenforceable. A range of loss, if any, associated with this matter is not probable or reasonably estimable as of April 3, 2021 and October 3, 2020. The Company is involved in certain other litigation matters not listed above but does not consider these matters to be material either individually or in the aggregate at this time. The Company’s view of the matters not listed may change in the future as the litigation and events related thereto unfold.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Apr. 03, 2021
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity Share repurchase program On November 17, 2020, the Board of Directors authorized a common stock repurchase program of up to $50.0 million. During the six months ended April 3, 2021, the Company repurchased 19,547 shares for an aggregate purchase price of $0.7 million at an average price of $34.86 per share under the repurchase program. The Company had $49.3 million available for share repurchases under the repurchase program as of April 3, 2021. Treasury stock during the six months ended April 3, 2021 included shares withheld to satisfy employees' tax withholding requirements in connection with vesting of RSUs. Additionally, during the six months ended April 3, 2021 the Company retired 1,017,308 shares of treasury stock. The Company accounts for the retirement of treasury stock by deducting its par value from common stock and reflecting any excess of cost over par value as a deduction from additional paid-in-capital on the condensed consolidated balance sheets.

Stock-based Compensation

Stock-based Compensation	6 Months Ended
	Apr. 03, 2021
Share-based Payment Arrangement [Abstract]
Stock-based Compensation	Stock-based Compensation 2018 Equity Incentive Plan In July 2018, the Board adopted the 2018 Equity Incentive Plan (the “2018 Plan”). The 2018 Plan became effective in connection with the Company's initial public offering ("IPO"). The number of shares reserved for issuance under the 2018 Plan increase automatically on January 1 of each year beginning in 2019 and continuing through 2028 by a number of shares of common stock equal to the lesser of (x) 5% of the total outstanding shares of the Company’s common stock and common stock equivalents as of the immediately preceding December 31 (rounded to the nearest whole share) and (y) a number of shares determined by the Company's board of directors (the "Board"). Stock options Pursuant to the 2018 Plan, the Company issues stock options to employees and directors. The fair value of the stock options is based on the Company’s closing stock price on the trading day immediately prior to the date of grant. The option price, number of shares, and grant date are determined at the discretion of the Board. For so long as the option holder performs services for the Company, the options generally vest over 48 months, on a monthly or quarterly basis, with certain options subject to an initial annual cliff vest, and are exercisable for a period not to exceed ten years from the date of grant. The summary of the Company’s stock option activity is as follows: Number of Weighted-Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In years) (In thousands) Outstanding at October 3, 2020 28,422,940 $ 12.03 5.6 $ 99,053 Granted — — Exercised (10,829,628) 11.01 Forfeited (403,681) 14.30 Outstanding at April 3, 2021 17,189,631 $ 12.62 5.5 $ 452,794 At April 3, 2021 Options exercisable 14,465,856 $ 12.25 5.1 $ 386,395 Options vested and expected to vest 16,893,229 $ 12.59 5.5 $ 445,523 As of April 3, 2021 and October 3, 2020, the Company had $10.5 million and $16.9 million, respectively, of unrecognized stock-based compensation expense related to stock options, which is expected to be recognized over a weighted-average period of 1.2 and 1.5 years, respectively. Restricted stock units Pursuant to the 2018 Plan, the Company issues RSUs to employees and directors. The fair value of RSUs is based on the Company's closing stock price on the trading day immediately preceding the date of grant. RSUs typically have an initial annual cliff vest, and then vest quarterly over the service period, which is generally four years. The summary of the Company’s RSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 11,647,951 $ 10.50 $ 180,543 Granted 2,613,732 Released (1,989,069) Forfeited (607,864) Outstanding at April 3, 2021 11,664,750 $ 11.87 $ 454,459 As of April 3, 2021 and October 3, 2020, the Company had $105.1 million and $92.4 million of unrecognized stock-based compensation expense related to RSUs, which is expected to be recognized over a weighted-average period of 2.8 and 3.0 years, respectively. Performance stock units ("PSU") Pursuant to the 2018 Plan, the Company has issued and may issue certain PSUs that vest on the satisfaction of service and performance conditions. The Company estimates the fair value of PSUs on the grant date and recognizes compensation expense in the period it becomes probable that performance conditions will be achieved. On a quarterly basis, the Company re-evaluates the assumption of the probability that performance conditions will be satisfied and revises its estimates as appropriate as new or updated information becomes available. The summary of the Company’s PSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 — $ — $ — Granted 158,521 Vested — Forfeited — Outstanding at April 3, 2021 158,521 $ 22.81 $ 6,176 As of April 3, 2021, the Company had $4.3 million of unrecognized stock-based compensation expense related to PSUs, which is expected to be recognized over a weighted-average period of 1.7 years. Stock-based compensation Total stock-based compensation expense by functional category was as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) Cost of revenue $ 261 $ 278 $ 474 $ 561 Research and development 6,683 5,427 12,942 10,543 Sales and marketing 3,632 3,407 7,040 6,948 General and administrative 5,787 4,282 10,751 8,546 Total stock-based compensation expense $ 16,363 $ 13,394 $ 31,207 $ 26,598

Income Taxes

Income Taxes	6 Months Ended
	Apr. 03, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe Company’s tax provision and the resulting effective tax rate for interim periods is determined based upon its estimated annual effective tax rate ("AETR"), adjusted for the effect of discrete items arising in that quarter. The impact of such inclusions could result in a higher or lower effective tax rate during a quarter, based upon the mix and timing of actual earnings or losses versus annual projections. In each quarter, the Company updates its estimate of the AETR, and if the estimated AETR changes, a cumulative adjustment is made in that quarter. For the three and six months ended March 28, 2020, the Company excluded certain jurisdictions from the calculation of the estimated AETR as the Company anticipated an ordinary loss in these jurisdictions for which no tax benefit could be recognized. The Company recorded benefit from incomes taxes of $6.5 million and of $1.8 million for the three months ended April 3, 2021 and March 28, 2020, respectively, related to U.S. and non-U.S. income taxes. The Company recorded a provision for incomes taxes of $2.6 million and benefit from income taxes of $0.2 million for the six months ended April 3, 2021 and March 28, 2020, respectively. For the three and six months ended April 3, 2021 the Company's tax provision includes a discrete benefit for U.S. share based compensation. For the six months ended March 28, 2020, the Company's tax provision includes a discrete income tax benefit resulting from a favorable release of uncertain tax positions in the U.S. coinciding with the issuance of the Base Erosion and Anti-Abuse Tax (“BEAT”) Regulations. For the six months ended April 3, 2021, the Company maintained a full valuation allowance on its deferred tax assets in the U.S. and the Netherlands due to its history of operating losses. It is possible that within the next 12 months there may be sufficient positive evidence to release a portion or all of the valuation allowance. Release of the valuation allowance in the U.S. and the Netherlands would result in a benefit to income tax expense for the period the release is recorded, which could have a material impact on net earnings. The timing and amount of the potential valuation allowance release are subject to significant management judgment, as well as prospective earnings in the U.S. and the Netherlands.

Net Income (Loss) Per Share Att

Net Income (Loss) Per Share Attributable to Common Stockholders	6 Months Ended
	Apr. 03, 2021
Earnings Per Share [Abstract]
Net Income (Loss) Per Share Attributable to Common Stockholders	Net Income (Loss) Per Share Attributable to Common Stockholders Basic net income (loss) attributable to common stockholders per share is calculated by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock outstanding less shares subject to repurchase. Diluted net income (loss) per share attributable to common stockholders adjusts the basic net income (loss) per share attributable to common stockholders and the weighted-average number of shares of common stock outstanding for the potentially dilutive impact of stock awards, using the treasury stock method. The following table sets forth the computation of the Company’s basic and diluted net income (loss) per share attributable to common stockholders: Three Months Ended Six Months Ended April 3, March 28, April 3, 2021 March 28, 2020 (In thousands, except share and per share data) Numerator: Net income (loss) attributable to common stockholders - basic and diluted $ 17,221 $ (52,320) $ 149,513 $ 18,454 Denominator: Weighted-average shares of common stock—basic 121,880,615 109,515,049 118,745,569 109,249,866 Effect of potentially dilutive stock options 12,040,149 — 10,073,032 6,185,155 Effect of RSUs 9,105,551 — 8,016,629 2,384,548 Effect of PSUs 29,231 — 14,616 — Weighted-average shares of common stock—diluted 143,055,546 109,515,049 136,849,846 117,819,569 Net income (loss) per share attributable to common stockholders: Basic $ 0.14 $ (0.48) $ 1.26 $ 0.17 Diluted $ 0.12 $ (0.48) $ 1.09 $ 0.16 The following potentially dilutive shares were excluded from the computation of diluted net income (loss) per share attributable to common stockholders because including them would have been antidilutive: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 Stock options to purchase common stock 7,523,579 34,840,568 12,299,023 29,425,147 Restricted stock units 3,219,598 7,081,150 4,354,744 4,635,242 Performance stock units 44,217 — 22,109 — Total 10,787,394 41,921,718 16,675,876 34,060,389

Restructuring Plan

Restructuring Plan	6 Months Ended
	Apr. 03, 2021
Restructuring and Related Activities [Abstract]
Restructuring Plan	Restructuring Plan On June 23, 2020, the Company initiated a restructuring plan as part of its efforts to reduce operating expenses and preserve liquidity due to the uncertainty and challenges stemming from the COVID-19 pandemic (the "2020 restructuring plan"). As part of the 2020 restructuring plan, the Company eliminated approximately 12% of its global headcount and closed its New York retail store and six satellite offices in order to better align resources to provide further operating flexibility and more efficiently position the business for its long-term strategy. Activities under the 2020 restructuring plan were substantially completed in the first quarter of fiscal 2021. Total pre-tax restructuring and related costs under the 2020 restructuring plan were $26.4 million, which was incurred in fiscal 2020. For the assets deemed to be impaired as part of the 2020 restructuring, the Company estimated fair value using an income-approach based on management’s forecast of future cash flows expected to be derived from the property. In the first quarter of fiscal 2021, the Company negotiated the early termination of a facility lease that was part of the 2020 restructuring and recorded a gain of $2.8 million, representing the difference between the related operating lease liability and previously accrued restructuring expenses versus the early termination payment. The gain was recognized as a credit in sales and marketing expenses on the condensed consolidated statements of operations and comprehensive income. The cash paid related to the settlement of the lease liability as part of the early termination is included within "Cash paid for amounts included in the measurement of lease liabilities" within the supplemental disclosure on the condensed consolidated statements of cash flows.

Retirement plans

Retirement plans	6 Months Ended
	Apr. 03, 2021
Retirement Benefits [Abstract]
Retirement Plans	Retirement PlansThe Company has a defined contribution 401(k) plan (the "401(k) Plan") for the Company’s U.S.-based employees, as well as various defined contribution plans for its international employees. Eligible U.S. employees may make tax-deferred contributions under the 401(k) plan, but are limited to the maximum annual dollar amount allowable under the Internal Revenue Code of 1986, as amended (the "Code"). The Company matches contributions towards the 401(k) Plan and international defined contribution plans. The Company's matching contributions totaled $1.8 million and $1.5 million for the three months ended April 3, 2021 and March 28, 2020, respectively. The Company's matching contributions totaled $3.5 million and $3.1 million for the six months ended April 3, 2021 and March 28, 2020, respectively.

Subsequent Event

Subsequent Event	6 Months Ended
	Apr. 03, 2021
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventOn April 29, 2021, the Company obtained a preliminary injunction from the Court of Hamburg that prevents Google Ireland Ltd. from making available in Germany its Cast technology, aspects of which are protected by a Sonos patent related to enabling the ability to cast and control media content from a mobile phone or tablet to one or more smart playback devices. The preliminary injunction requires Google to stop providing mobile devices, playback devices, and software which use the infringing Cast technology. Further details regarding the enforcement of the preliminary injunction will be set forth in the full judgment, which is not yet available as of the date of this filing.

Business Overview and Basis o_2

Business Overview and Basis of Presentation (Policies)	6 Months Ended
	Apr. 03, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation and preparation	Basis of presentation and preparation The accompanying condensed consolidated financial statements are unaudited. The condensed consolidated balance sheet as of October 3, 2020 has been derived from the audited consolidated financial statements of the Company. The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial information and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all the information and footnotes required by U.S. GAAP for annual financial statements. They should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended October 3, 2020 (the “Annual Report”), filed with the SEC on November 23, 2020. In management’s opinion, the accompanying unaudited condensed consolidated financial statements include all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the Company’s financial position, its results of operations, and its cash flows for the interim periods presented. The results of operations for the three and six months ended April 3, 2021 are not necessarily indicative of the results to be expected for the full fiscal year or any other period. The Company operates on a 52- week or 53- week fiscal year ending on the Saturday nearest September 30 each year. The Company’s fiscal year is divided into four quarters of 13 weeks, each beginning on a Sunday and containing two 4-week periods followed by a 5-week period. An additional week is included in the fourth fiscal quarter approximately every five years to realign fiscal quarters with calendar quarters. This last occurred in the fourth quarter of the Company’s fiscal year ended October 3, 2020 and will reoccur in the fiscal year ending October 3, 2026. The six months ended April 3, 2021 and March 28, 2020 spanned 26 weeks each. As used in this Quarterly Report on Form 10-Q, “fiscal 2021” refers to the fiscal year ending October 2, 2021 and “fiscal 2020” refers to the fiscal year ended October 3, 2020.
Use of estimates and judgment	Use of estimates and judgments The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and expected trends. In March 2020, the outbreak of the novel coronavirus (COVID-19) was declared a pandemic. While the nature of the situation is dynamic, the Company has considered the impact when developing its estimates and assumptions noted above. Actual results and outcomes may differ from management's estimates and assumptions.
Recently adopted accounting pronouncements and recent accounting pronouncements pending adoption	Recently adopted accounting pronouncements In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments, and it subsequently issued amendments to the initial guidance (collectively referred to as "Topic 326"), which provide a new impairment model that requires measurement and recognition of expected credit losses for most financial assets and certain other instruments, including accounts receivable. The Company adopted this standard effective October 4, 2020, using a modified retrospective approach. Under the new standard, the allowance for credit losses is based on the Company's assessment of collectibility of accounts, including consideration of the age of invoices, each customer's expected ability to pay and collection history, customer-specific information and current economic conditions that may impact a customer's ability to pay. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. In November 2018, the FASB issued ASU No. 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard resolves the diversity in practice concerning whether certain transactions between collaborative arrangement participants should be accounted for as revenue under Accounting Standards Codification 606, Revenue from Contracts with Customers ("Topic 606"). This standard specifies when a participant is a customer in a collaboration, adds guidance for unit of account to align with Topic 606 and provides presentation guidance for collaborative arrangements. The Company adopted this standard in the first quarter of fiscal 2021. The adoption did not have a material impact on the Company's consolidated financial statements. Recent accounting pronouncements pending adoption In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This standard simplifies the accounting for income taxes by removing certain exceptions to the general principles in Accounting Standards Codification Topic 740 ("ASC 740") as well as by improving consistent application of the topic by clarifying and amending existing guidance. This standard is effective for the Company in the first quarter of fiscal 2022, with early adoption permitted. The Company is currently evaluating the timing of adoption and impact on the Company's consolidated financial statements.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Apr. 03, 2021
Fair Value Disclosures [Abstract]
Summary of fair value measurements by level for the assets measured on a recurring basis	The following table summarizes fair value measurements by level for the assets measured at fair value on a recurring basis as of April 3, 2021 and October 3, 2020: April 3, 2021 (In thousands) Level 1 Level 2 Level 3 Total Assets: Money market funds (cash equivalents) $ 472,425 $ — $ — $ 472,425 October 3, 2020 (In thousands) Level 1 Level 2 Level 3 Total Assets: Money market funds (cash equivalents) $ 281,380 $ — $ — $ 281,380

Revenue and Geographic Inform_2

Revenue and Geographic Information (Tables)	6 Months Ended
	Apr. 03, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of revenue	Revenue by geographical region also includes the applicable service revenue for software upgrades and cloud-based services attributable to each region and is based on ship-to address, as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) Americas $ 193,938 $ 101,964 $ 561,177 $ 405,158 Europe, Middle East and Africa (“EMEA”) 114,306 57,252 354,313 269,990 Asia Pacific (“APAC”) 24,705 15,882 63,042 62,033 Total revenue $ 332,949 $ 175,098 $ 978,532 $ 737,181 Revenue is attributed to individual countries based on ship-to address and also includes the applicable service revenue for software upgrades and cloud-based services attributable to each country. Revenue by significant countries is as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) United States $ 178,019 $ 94,755 $ 508,915 $ 372,028 Other countries 154,930 80,343 469,617 365,153 Total revenue $ 332,949 $ 175,098 $ 978,532 $ 737,181 Revenue by product category also includes the applicable service revenue for software upgrades and cloud-based services attributable to each product category. Revenue by major product category is as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) Sonos speakers $ 267,534 $ 116,367 $ 795,050 $ 583,044 Sonos system products 52,062 47,202 149,820 108,723 Partner products and other revenue 13,353 11,529 33,662 45,414 Total revenue $ 332,949 $ 175,098 $ 978,532 $ 737,181

Balance Sheet Components (Table

Balance Sheet Components (Tables)	6 Months Ended
	Apr. 03, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of accounts receivable	Accounts receivable, net of allowances, consist of the following: April 3, 2021 October 3, 2020 (In thousands) Accounts receivable $ 91,737 $ 73,757 Allowance for credit losses (1,435) (1,307) Allowance for sales incentives (20,612) (17,515) Accounts receivable, net of allowances $ 69,690 $ 54,935
Schedule of inventories	Inventories consist of the following: April 3, 2021 October 3, 2020 (In thousands) Finished goods $ 131,541 $ 172,184 Component parts 8,040 8,646 Inventories $ 139,581 $ 180,830
Schedule of finite-lived intangible assets, future amortization expense	The following table reflects the changes in the net carrying amount of the components of intangible assets associated with the Company's acquisition activity: April 3, 2021 Gross Carrying Amount Accumulated Amortization Net Carrying Value Weighted-Average Remaining Life (In thousands, except weighted-average remaining life) Technology $ 7,789 $ (2,468) $ 5,321 3.10 Other 39 (26) 13 0.67 Total finite-lived intangible assets 7,828 (2,494) 5,334 3.09 In-process research and development and other intangible assets not subject to amortization 20,100 — 20,100 Total intangible assets $ 27,928 $ (2,494) $ 25,434 The following table summarizes estimated future amortization expense of the Company's intangible assets as of April 3, 2021: Fiscal years ending Future Amortization Expense (In thousands) Remainder of fiscal 2021 $ 971 2022 1,927 2023 1,246 2024 1,020 2025 170 2026 and thereafter — Total future amortization expense $ 5,334
Schedule of accrued expenses	Accrued expenses consist of the following: April 3, 2021 October 3, 2020 (In thousands) Accrued advertising and marketing $ 9,999 $ 10,609 Accrued taxes 9,294 6,252 Accrued inventory 7,864 2,843 Accrued manufacturing, logistics and product development 12,366 9,753 Accrued general and administrative expenses 16,555 10,068 Other accrued payables 5,581 5,524 Total accrued expenses $ 61,659 $ 45,049
Changes in deferred balances and expected revenue recognition	The following table presents the changes in the Company’s deferred revenue for the six months ended April 3, 2021 and March 28, 2020: April 3, March 28, (In thousands) Deferred revenue, beginning of period $ 62,389 $ 56,449 Recognition of revenue included in beginning of period deferred revenue (7,883) (6,904) Revenue deferred, net of revenue recognized on contracts in the respective period 16,383 10,798 Deferred revenue, end of period $ 70,889 $ 60,343
Remaining performance obligation	The Company expects the following recognition of deferred revenue as of April 3, 2021: For the fiscal years ending 2021 2022 2023 2024 2025 and Beyond Total (In thousands) Deferred revenue expected to be recognized $ 10,473 $ 15,360 $ 13,432 $ 11,382 $ 20,242 $ 70,889
Schedule of other current liabilities	Other current liabilities consist of the following: April 3, 2021 October 3, 2020 (In thousands) Reserve for returns $ 20,572 $ 14,195 Short-term operating lease liabilities 10,718 10,910 Product warranty liability 4,856 3,628 Other 4,624 2,417 Total other current liabilities $ 40,770 $ 31,150
Schedule of product warranty liability	The following table presents the changes in the Company’s warranty liability for the six months ended April 3, 2021 and March 28, 2020: April 3, 2021 March 28, 2020 (In thousands) Warranty liability, beginning of period $ 3,628 $ 3,254 Provision for warranties issued during the period 8,844 7,098 Settlements of warranty claims during the period (7,616) (6,608) Warranty liability, end of period $ 4,856 $ 3,744

Debt (Tables)

Debt (Tables)	6 Months Ended
	Apr. 03, 2021
Debt Disclosure [Abstract]
Schedule of short and long term debt	As of April 3, 2021, the Company did not have any remaining short- or long-term debt obligations, and as of October 3, 2020 the Company’s short- and long-term debt obligations were as follows: October 3, 2020 Rate Balance (In thousands, except percentages) Term loan (1) 2.4 % $ 25,000 Unamortized debt issuance costs (2) (82) Total indebtedness 24,918 Less short-term portion (6,667) Long-term debt $ 18,251 (1) Original maturity date of October 2021 and bore interest at a variable rate equal to an adjusted LIBOR plus 2.25%, payable quarterly. (2) Debt issuance costs were recorded as a debt discount and recorded as interest expense over the term of the agreement.

Stock-based Compensation (Table

Stock-based Compensation (Tables)	6 Months Ended
	Apr. 03, 2021
Share-based Payment Arrangement [Abstract]
Schedule of stock option activity	The summary of the Company’s stock option activity is as follows: Number of Weighted-Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In years) (In thousands) Outstanding at October 3, 2020 28,422,940 $ 12.03 5.6 $ 99,053 Granted — — Exercised (10,829,628) 11.01 Forfeited (403,681) 14.30 Outstanding at April 3, 2021 17,189,631 $ 12.62 5.5 $ 452,794 At April 3, 2021 Options exercisable 14,465,856 $ 12.25 5.1 $ 386,395 Options vested and expected to vest 16,893,229 $ 12.59 5.5 $ 445,523
Schedule of restricted stock unit activity	The summary of the Company’s RSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 11,647,951 $ 10.50 $ 180,543 Granted 2,613,732 Released (1,989,069) Forfeited (607,864) Outstanding at April 3, 2021 11,664,750 $ 11.87 $ 454,459
Schedule of performance stock units activity	The summary of the Company’s PSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 — $ — $ — Granted 158,521 Vested — Forfeited — Outstanding at April 3, 2021 158,521 $ 22.81 $ 6,176
Schedule of stock-based compensation expense	Total stock-based compensation expense by functional category was as follows: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 (In thousands) Cost of revenue $ 261 $ 278 $ 474 $ 561 Research and development 6,683 5,427 12,942 10,543 Sales and marketing 3,632 3,407 7,040 6,948 General and administrative 5,787 4,282 10,751 8,546 Total stock-based compensation expense $ 16,363 $ 13,394 $ 31,207 $ 26,598

Net Income (Loss) Per Share A_2

Net Income (Loss) Per Share Attributable to Common Stockholders (Tables)	6 Months Ended
	Apr. 03, 2021
Earnings Per Share [Abstract]
Schedule of earnings per share	The following table sets forth the computation of the Company’s basic and diluted net income (loss) per share attributable to common stockholders: Three Months Ended Six Months Ended April 3, March 28, April 3, 2021 March 28, 2020 (In thousands, except share and per share data) Numerator: Net income (loss) attributable to common stockholders - basic and diluted $ 17,221 $ (52,320) $ 149,513 $ 18,454 Denominator: Weighted-average shares of common stock—basic 121,880,615 109,515,049 118,745,569 109,249,866 Effect of potentially dilutive stock options 12,040,149 — 10,073,032 6,185,155 Effect of RSUs 9,105,551 — 8,016,629 2,384,548 Effect of PSUs 29,231 — 14,616 — Weighted-average shares of common stock—diluted 143,055,546 109,515,049 136,849,846 117,819,569 Net income (loss) per share attributable to common stockholders: Basic $ 0.14 $ (0.48) $ 1.26 $ 0.17 Diluted $ 0.12 $ (0.48) $ 1.09 $ 0.16
Schedule of antidilutive securities	The following potentially dilutive shares were excluded from the computation of diluted net income (loss) per share attributable to common stockholders because including them would have been antidilutive: Three Months Ended Six Months Ended April 3, 2021 March 28, 2020 April 3, 2021 March 28, 2020 Stock options to purchase common stock 7,523,579 34,840,568 12,299,023 29,425,147 Restricted stock units 3,219,598 7,081,150 4,354,744 4,635,242 Performance stock units 44,217 — 22,109 — Total 10,787,394 41,921,718 16,675,876 34,060,389

Business Overview and Basis o_3

Business Overview and Basis of Presentation (Details)	Apr. 03, 2021country
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of countries where products are distributed	50

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Money Market Funds - USD ($) $ in Thousands	Apr. 03, 2021	Oct. 03, 2020
Assets:
Money market funds (cash equivalents)	$ 472,425	$ 281,380
Level 1
Assets:
Money market funds (cash equivalents)	472,425	281,380
Level 2
Assets:
Money market funds (cash equivalents)	0	0
Level 3
Assets:
Money market funds (cash equivalents)	$ 0	$ 0

Revenue and Geographic Inform_3

Revenue and Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 332,949	$ 175,098	$ 978,532	$ 737,181
Sonos speakers
Disaggregation of Revenue [Line Items]
Revenue	267,534	116,367	795,050	583,044
Sonos system products
Disaggregation of Revenue [Line Items]
Revenue	52,062	47,202	149,820	108,723
Partner products and other revenue
Disaggregation of Revenue [Line Items]
Revenue	13,353	11,529	33,662	45,414
Americas
Disaggregation of Revenue [Line Items]
Revenue	193,938	101,964	561,177	405,158
Europe, Middle East and Africa (“EMEA”)
Disaggregation of Revenue [Line Items]
Revenue	114,306	57,252	354,313	269,990
Asia Pacific (“APAC”)
Disaggregation of Revenue [Line Items]
Revenue	24,705	15,882	63,042	62,033
United States
Disaggregation of Revenue [Line Items]
Revenue	178,019	94,755	508,915	372,028
Other countries
Disaggregation of Revenue [Line Items]
Revenue	$ 154,930	$ 80,343	$ 469,617	$ 365,153

Balance Sheet Components - Acco

Balance Sheet Components - Accounts receivable, net of allowances (Details) - USD ($) $ in Thousands	Apr. 03, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable	$ 91,737	$ 73,757
Allowance for credit losses	(1,435)	(1,307)
Allowance for sales incentives	(20,612)	(17,515)
Accounts receivable, net of allowances	$ 69,690	$ 54,935

Balance Sheet Components - Inve

Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	Apr. 03, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Finished goods	$ 131,541	$ 172,184
Component parts	8,040	8,646
Inventories	$ 139,581	$ 180,830

Balance Sheet Components - Fini

Balance Sheet Components - Finite-lived intangible assets, future amortization expense (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 03, 2021	Oct. 03, 2020
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 7,828
Accumulated amortization	(2,494)
Finite-lived intangible assets, net carrying value	5,334
Intangible assets, gross carrying amount (excluding goodwill)	27,928
Intangible assets, net carrying value (excluding goodwill)	$ 25,434	$ 26,394
Weighted-average remaining life	3 years 1 month 2 days
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of fiscal 2021	$ 971
2022	1,927
2023	1,246
2024	1,020
2025	170
2026 and thereafter	0
Finite-lived intangible assets, net carrying value	5,334
In progress research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	20,100
Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	7,789
Accumulated amortization	(2,468)
Finite-lived intangible assets, net carrying value	$ 5,321
Weighted-average remaining life	3 years 1 month 6 days
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-lived intangible assets, net carrying value	$ 5,321
Other
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	39
Accumulated amortization	(26)
Finite-lived intangible assets, net carrying value	$ 13
Weighted-average remaining life	8 months 1 day
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-lived intangible assets, net carrying value	$ 13

Balance Sheet Components - Accr

Balance Sheet Components - Accrued expenses (Details) - USD ($) $ in Thousands	Apr. 03, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued advertising and marketing	$ 9,999	$ 10,609
Accrued taxes	9,294	6,252
Accrued inventory	7,864	2,843
Accrued manufacturing, logistics and product development	12,366	9,753
Accrued general and administrative expenses	16,555	10,068
Other accrued payables	5,581	5,524
Total accrued expenses	$ 61,659	$ 45,049

Balance Sheet Components - Chan

Balance Sheet Components - Change in deferred revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of period	$ 62,389	$ 56,449
Recognition of revenue included in beginning of period deferred revenue	(7,883)	(6,904)
Revenue deferred, net of revenue recognized on contracts in the respective period	16,383	10,798
Deferred revenue, end of period	$ 70,889	$ 60,343

Balance Sheet Components - Expe

Balance Sheet Components - Expected revenue recognition (Details) $ in Thousands	Apr. 03, 2021USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue expected to be recognized	$ 70,889
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-04
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue expected to be recognized	$ 10,473
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied in	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-03
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue expected to be recognized	$ 15,360
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied in	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-02
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue expected to be recognized	$ 13,432
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied in	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue expected to be recognized	$ 11,382
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied in	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-09-29
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred revenue expected to be recognized	$ 20,242
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied in

Balance Sheet Components - Othe

Balance Sheet Components - Other current liabilities (Details) - USD ($) $ in Thousands	Apr. 03, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reserve for returns	$ 20,572	$ 14,195
Short-term operating lease liabilities	10,718	10,910
Product warranty liability	4,856	3,628
Other	4,624	2,417
Total other current liabilities	$ 40,770	$ 31,150

Balance Sheet Components - Prod

Balance Sheet Components - Product Warranties (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty liability, beginning of period	$ 3,628	$ 3,254
Provision for warranties issued during the period	8,844	7,098
Settlements of warranty claims during the period	(7,616)	(6,608)
Warranty liability, end of period	$ 4,856	$ 3,744

Debt - Additional Information (

Debt - Additional Information (Details) $ in Thousands	1 Months Ended	6 Months Ended
	Jan. 31, 2021USD ($)	Apr. 03, 2021USD ($)	Mar. 28, 2020USD ($)	Oct. 03, 2020USD ($)
Debt Instrument [Line Items]
Repayments of debt		$ 25,000	$ 3,333
Fixed charge ratio, covenant one		1
Fixed charge ratio, covenant two		1.15
Term Loan
Debt Instrument [Line Items]
Repayments of debt	$ 24,900
Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 80,000
Credit Facility | Letter of Credit
Debt Instrument [Line Items]
Unused borrowing capacity		$ 2,900		$ 500
LIBOR | Term Loan
Debt Instrument [Line Items]
Interest rate, spread on variable rate		2.25%
LIBOR | Credit Facility
Debt Instrument [Line Items]
Interest rate, spread on variable rate		2.50%

Debt - Schedule of debt (Detail

Debt - Schedule of debt (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 03, 2021	Oct. 03, 2020
Debt Disclosure [Abstract]
Debt, interest rate		2.40%
Debt		$ 25,000
Unamortized debt issuance costs		(82)
Total indebtedness		24,918
Less short-term portion		(6,667)
Long-term debt	$ 0	$ 18,251
LIBOR | Term Loan
Debt Instrument [Line Items]
Interest rate, spread on variable rate	2.25%

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	Nov. 02, 2020patent	Sep. 29, 2020patent	Aug. 21, 2020patent	Jun. 12, 2020patent	Jun. 11, 2020patent	Mar. 10, 2017patent	Apr. 03, 2021USD ($)
Long-term Purchase Commitment [Line Items]
Tariff refund | $							$ 27.5
Other Current Assets
Long-term Purchase Commitment [Line Items]
Income taxes receivable | $							1.1
Government
Long-term Purchase Commitment [Line Items]
Income tax examination, liability (refund) | $							$ (6.2)
Sonos, Inc.
Long-term Purchase Commitment [Line Items]
Gain contingency, patents allegedly infringed upon, number		5		2
Sonos, Inc. | CANADA
Long-term Purchase Commitment [Line Items]
Gain contingency, patents allegedly infringed upon, number			1
Sonos, Inc. | Europe and France
Long-term Purchase Commitment [Line Items]
Gain contingency, patents allegedly infringed upon, number			2
Alphabet Inc. ("Alphabet") and Google LLC ("Google")
Long-term Purchase Commitment [Line Items]
Loss contingency, patents allegedly infringed upon, number					5
Loss contingency, patents found not infringed upon, number	5
Implicit, LLC
Long-term Purchase Commitment [Line Items]
Loss contingency, patents allegedly infringed upon, number						2

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($)	6 Months Ended
	Apr. 03, 2021	Nov. 17, 2020
Equity [Abstract]
Stock repurchase program, authorized value		$ 50,000,000
Purchase of treasury stock (in shares)	19,547
Purchase price of common stock	$ 700,000
Average price per share (in dollars per share)	$ 34.86
Remaining authorized repurchase amount	$ 49,300,000
Retirement of treasury stock (in shares)	1,017,308

Stock-based Compensation - Addi

Stock-based Compensation - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended	12 Months Ended
	Jul. 31, 2018	Apr. 03, 2021	Oct. 03, 2020
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		48 months
Unrecognized stock-based compensation expense		$ 10.5	$ 16.9
Unrecognized stock-based compensation expense, period of recognition		1 year 2 months 12 days	1 year 6 months
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 105.1	$ 92.4
Unrecognized stock-based compensation expense, period of recognition		2 years 9 months 18 days	3 years
Cliff vesting period		4 years
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 4.3
Unrecognized stock-based compensation expense, period of recognition		1 year 8 months 12 days
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding stock maximum	5.00%
2003 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period		10 years

Stock-based Compensation - Stoc

Stock-based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Apr. 03, 2021USD ($)$ / sharesshares	Oct. 03, 2020USD ($)$ / sharesshares
Number of Options
Beginning balance (in shares) | shares	28,422,940
Granted (in shares) | shares	0
Exercised (in shares) | shares	(10,829,628)
Forfeited (in shares) | shares	(403,681)
Ending balance (in shares) | shares	17,189,631	28,422,940
Options exercisable (in shares) | shares	14,465,856
Options vested and expected to vest (in shares) | shares	16,893,229
Weighted-Average Exercise Price
Beginning balance (in USD per share) | $ / shares	$ 12.03
Granted (in USD per share) | $ / shares	0
Exercised (in USD per share) | $ / shares	11.01
Forfeited (in USD per share) | $ / shares	14.30
Ending balance (in USD per share) | $ / shares	12.62	$ 12.03
Option exercisable - Weighted Average Exercise Price (in USD per share) | $ / shares	12.25
Options vested and expected to vest - Weighted Average Exercise Price (in USD per share) | $ / shares	$ 12.59
Additional Information
Weighted Average Remaining Contractual Term	5 years 6 months	5 years 7 months 6 days
Option exercisable - Weighted Average Remaining Contractual Term	5 years 1 month 6 days
Options vested and expected to vest - Weighted Average Remaining Contractual Term	5 years 6 months
Aggregate Intrinsic Value | $	$ 452,794	$ 99,053
Options exercisable - Weighted Average Intrinsic Value | $	386,395
Options vested and expected to vest - Weighted Average Intrinsic Value | $	$ 445,523

Stock-based Compensation - Rest

Stock-based Compensation - Restricted Stock Unit Activity (Details) - Restricted Stock Units $ / shares in Units, $ in Thousands	6 Months Ended
	Apr. 03, 2021USD ($)$ / sharesshares
Number of Units
Outstanding, beginning balance (in shares)	11,647,951
Granted (in shares)	2,613,732
Released (in shares)	(1,989,069)
Forfeited (in shares)	(607,864)
Outstanding, ending balance (in shares)	11,664,750
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in usd per share) | $ / shares	$ 10.50
Outstanding, ending balance (in usd per share) | $ / shares	$ 11.87
Additional Information
Aggregate Intrinsic Value, beginning balance | $	$ 180,543
Aggregate Intrinsic Value, ending balance | $	$ 454,459

Stock-based Compensation - Perf

Stock-based Compensation - Performance Stock Unit Activity (Details) - Performance Share Units $ / shares in Units, $ in Thousands	6 Months Ended
	Apr. 03, 2021USD ($)$ / sharesshares
Number of Units
Outstanding, beginning balance (in shares)	0
Granted (in shares)	158,521
Vested (in shares)	0
Forfeited (in shares)	0
Outstanding, ending balance (in shares)	158,521
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in usd per share) | $ / shares	$ 0
Outstanding, ending balance (in usd per share) | $ / shares	$ 22.81
Additional Information
Aggregate Intrinsic Value, beginning balance | $	$ 0
Aggregate Intrinsic Value, ending balance | $	$ 6,176

Stock-based Compensation - St_2

Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 16,363	$ 13,394	$ 31,207	$ 26,598
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	261	278	474	561
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	6,683	5,427	12,942	10,543
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	3,632	3,407	7,040	6,948
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 5,787	$ 4,282	$ 10,751	$ 8,546

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Income Tax Disclosure [Abstract]
(Benefit from) provision for income taxes	$ (6,542)	$ (1,810)	$ 2,578	$ (153)

Net Income (Loss) Per Share A_3

Net Income (Loss) Per Share Attributable to Common Stockholders - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Apr. 03, 2021	Jan. 02, 2021	Mar. 28, 2020	Dec. 28, 2019	Apr. 03, 2021	Mar. 28, 2020
Numerator:
Net income	$ 17,221	$ 132,292	$ (52,320)	$ 70,775	$ 149,513	$ 18,454
Denominator:
Weighted-average shares of common stock - basic (in shares)	121,880,615		109,515,049		118,745,569	109,249,866
Weighted-average shares of common stock - diluted (in shares)	143,055,546		109,515,049		136,849,846	117,819,569
Net income (loss) attributable to common stockholders:
Net income (loss) per share attributable to common stockholders - basic (in USD per share)	$ 0.14		$ (0.48)		$ 1.26	$ 0.17
Net income (loss) per share attributable to common stockholders - diluted (in USD per share)	$ 0.12		$ (0.48)		$ 1.09	$ 0.16
Stock Options
Denominator:
Effect of potentially dilutive stock options, RSUs, and PSUs (in shares)	12,040,149		0		10,073,032	6,185,155
Restricted Stock Units
Denominator:
Effect of potentially dilutive stock options, RSUs, and PSUs (in shares)	9,105,551		0		8,016,629	2,384,548
Performance Share Units
Denominator:
Effect of potentially dilutive stock options, RSUs, and PSUs (in shares)	29,231		0		14,616	0

Net Income (Loss) Per Share A_4

Net Income (Loss) Per Share Attributable to Common Stockholders - Antidilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially antidilutive securities (in shares)	10,787,394	41,921,718	16,675,876	34,060,389
Stock options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially antidilutive securities (in shares)	7,523,579	34,840,568	12,299,023	29,425,147
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially antidilutive securities (in shares)	3,219,598	7,081,150	4,354,744	4,635,242
Performance stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially antidilutive securities (in shares)	44,217	0	22,109	0

Restructuring Plan - Additional

Restructuring Plan - Additional Information (Details) - 2020 Restructuring Plan - Facility Closing $ in Millions	Jun. 23, 2020office	Jan. 02, 2021USD ($)	Oct. 03, 2020USD ($)
Restructuring Cost and Reserve [Line Items]
Percent of global headcount eliminated	12.00%
Number of satellite offices closed | office	6
Restructuring costs			$ 26.4
Gain on restructuring of debt		$ 2.8

Retirement plans (Details)

Retirement plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Retirement Benefits [Abstract]
Employer contribution	$ 1.8	$ 1.5	$ 3.5	$ 3.1