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Income Taxes (Tables)
12 Months Ended
Oct. 02, 2021
Income Tax Disclosure [Abstract]  
Schedule of Income (Loss) Before Provision For (Benefit From) Income Taxes
The Company’s income (loss) before provision for (benefit from) income taxes for fiscal 2021, 2020 and 2019 were as follows: 
 October 2,
2021
October 3,
2020
September 28,
2019
(In thousands)
Domestic$126,810 $(15,194)$(858)
Foreign30,115 (4,889)(218)
Income (loss) before provision for (benefit from) income taxes$156,925 $(20,083)$(1,076)
Schedule of Provision For (Benefit From) Income Taxes
Components of the provision for (benefit from) income taxes consisted of the following:
 
 October 2,
2021
October 3,
2020
September 28,
2019
(In thousands)
Current:
U.S. Federal$— $(1,388)$1,366 
U.S. State440 724 1,132 
Foreign6,216 1,220 1,463 
Total current6,656 556 3,961 
Deferred:
U.S. Federal— — — 
U.S. State— — — 
Foreign(8,326)(524)(271)
Total deferred(8,326)(524)(271)
Provision for (benefit from) income taxes$(1,670)$32 $3,690 
Schedule of Deferred Tax Assets and Liabilities
Components of the Company’s deferred income tax assets and liabilities are as follows: 
 October 2,
2021
October 3,
2020
(In thousands)
Deferred tax assets
Accrued expenses and reserves$18,601 $12,014 
Deferred revenue13,915 11,831 
U.S. net operating loss carryforwards25,284 8,242 
Foreign net operating loss carryforwards13,240 12,183 
Research & development tax credit carryforwards77,607 53,543 
Stock-based compensation9,082 11,018 
Operating lease liability9,908 14,377 
U.S. amortization8,031 7,648 
Depreciation1,875 1,101 
Other428 603 
Total deferred tax assets177,971 132,560 
Valuation allowance(155,978)(113,939)
Deferred tax assets, net of valuation allowance21,993 18,621 
Deferred tax liabilities
Tax accounting method change(962)(2,946)
Right-of-use asset(7,388)(9,914)
Foreign amortization(5,833)(6,093)
Depreciation(32)(187)
Other(144)(115)
Total deferred tax liabilities(14,359)(19,255)
Net deferred tax assets (liabilities)$7,634 $(634)
Reported as
Deferred tax assets$10,028 $1,800 
Deferred tax liabilities(2,394)(2,434)
Net deferred tax assets (liabilities)$7,634 $(634)
Summary of Changes in Valuation Allowance
The following table summarizes changes in the valuation allowance for fiscal 2021, 2020 and 2019:

October 2,
2021
October 3,
2020
September 28,
2019
(In thousands)
Beginning balance$113,939 $95,088 $72,380 
Increase during the period49,791 18,851 22,708 
Decrease during the period(7,752)— — 
Ending balance$155,978 $113,939 $95,088 
Schedule of Effective Income Tax Rate Reconciliation
Reconciliation of U.S. statutory federal income taxes to the Company’s provision for (benefit from) income taxes is as follows:
 
October 2,
2021
October 3,
2020
September 28,
2019
(In thousands)
U.S. federal income taxes at statutory rate$32,954 $(4,217)$(226)
U.S. state and local income taxes, net of federal benefit and state credits(9,473)(2,798)(9,315)
Foreign income tax rate differential1,430 (75)129 
Stock-based compensation(47,496)869 (2,399)
Federal research and development tax credits(21,535)(8,012)(8,418)
Unrecognized federal tax benefits4,041 815 (2,806)
Change in tax rate(2,681)— 1,161 
Global intangible low taxed income, net of foreign tax credits
— — 239 
Base erosion and anti-abuse tax— (781)781 
Other(565)598 822 
Change in valuation allowance41,655 13,633 23,722 
Provision for income taxes$(1,670)$32 $3,690 
Schedule of Changes in Unrecognized Tax Benefits
Change in gross unrecognized tax benefits, excluding interest and penalties, as a result of uncertain tax positions are as follows:
October 2,
2021
October 3,
2020
September 28,
2019
(In thousands)
Beginning balance$14,721 $12,527 $17,794 
Decrease - tax positions in prior periods(4)(768)(8,226)
Increase - tax positions in current periods6,535 2,962 2,959 
Ending balance$21,252 $14,721 $12,527