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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Sep. 28, 2024
Sep. 30, 2023
Oct. 01, 2022
Oct. 02, 2021
Deferred tax assets        
Capitalized research & development $ 107,474 $ 63,395    
Research & development tax credit carryforwards 58,156 75,593    
Accrued expenses and reserves 17,070 17,837    
Deferred revenue 15,374 15,855    
Operating lease liability 14,259 13,097    
Other capitalized costs 12,030 5,364    
Stock-based compensation 8,195 7,727    
Foreign net operating loss carryforwards 5,783 7,606    
Depreciation 2,991 2,700    
U.S. net operating loss carryforwards 2,296 1,852    
Total deferred tax assets 592 494    
Total deferred tax assets 244,220 211,520    
Valuation allowance (216,365) (185,840) $ (162,267) $ (155,978)
Deferred tax assets, net of valuation allowance 27,855 25,680    
Deferred tax liabilities        
Right-of-use asset (10,955) (11,392)    
Intangibles (3,392) (22,475)    
Capitalized inventory (3,254) 0    
Total deferred tax liabilities (17,601) (33,867)    
Net deferred tax assets (liabilities) 10,254      
Net deferred tax assets (liabilities)   (8,187)    
Deferred tax assets 10,314 1,659    
Deferred tax liabilities $ (60) $ (9,846)