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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Oct. 02, 2021
Oct. 03, 2020
Sep. 28, 2019
Cash flows from operating activities      
Net income (loss) $ 158,595 $ (20,115) $ (4,766)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 33,882 36,426 36,415
Impairment and abandonment charges 3,552 14,174 0
Stock-based compensation expense 62,127 57,610 46,575
Other 1,951 5,710 2,713
Deferred income taxes (8,330) (567) (268)
Foreign currency transaction (gain) loss (1,108) (4,143) 4,035
Changes in operating assets and liabilities:      
Accounts receivable, net (45,697) 49,593 (32,078)
Inventories (7,911) 38,010 (31,796)
Other assets (30,009) (5,749) (7,605)
Accounts payable and accrued expenses 26,231 (24,440) 85,878
Accrued compensation 33,447 1,088 8,231
Deferred revenue 27,587 4,754 6,165
Other liabilities (1,091) 9,635 7,137
Net cash provided by operating activities 253,226 161,986 120,636
Cash flows from investing activities      
Purchases of property and equipment, intangible and other assets (45,531) (33,035) (23,222)
Cash paid for acquisition, net of acquired cash 0 (36,289) 0
Net cash used in investing activities (45,531) (69,324) (23,222)
Cash flows from financing activities      
Payments of offering costs 0 0 (585)
Proceeds from exercise of stock options 147,818 42,286 31,574
Payments for repurchase of common stock (50,014) (50,015) (2,426)
Payments for repurchase of common stock related to shares withheld for tax in connection with vesting of RSUs (47,837) (11,029) 0
Repayments of borrowings (25,000) (8,333) (6,667)
Net cash provided by (used in) financing activities 24,967 (27,091) 21,896
Effect of exchange rate changes on cash, cash equivalents and restricted cash 148 2,900 (1,610)
Net increase in cash, cash equivalents, and restricted cash 232,810 68,471 117,700
Cash, cash equivalents, and restricted cash      
Beginning of period 407,291 338,820 221,120
End of period 640,101 407,291 338,820
Supplemental disclosure      
Cash paid for interest 502 1,647 2,517
Cash paid for taxes, net of refunds 4,114 783 3,570
Cash paid for amounts included in the measurement of lease liabilities 18,657 17,194 0
Supplemental disclosure of non-cash investing and financing activities      
Purchases of property and equipment, accrued but not paid 5,653 3,911 11,687
Right-of-use assets obtained in exchange for lease liabilities $ 2,010 $ 77,416 $ 0