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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 28, 2024
Jun. 30, 2023
Statement of Cash Flows [Abstract]    
Net income $ 263,433 $ 121,206
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 13,707 12,895
Stock-based compensation 44,467 41,561
Non-cash lease expense 13,943 13,980
Acquired in-process research and development technology 20,250 37,500
Other, net 7,924 (8,176)
Changes in operating assets and liabilities:    
Trade receivables, net (159,217) (18,317)
Inventory 3,075 (12,815)
Prepaid expenses and other assets 33,660 8,548
Accrued collaboration liabilities (2,350) 3,272
Accounts payable and other liabilities (50,522) 5,732
Net cash provided by operating activities 188,370 205,386
Cash flows from investing activities:    
Purchases of property, equipment and other, net (16,261) (17,961)
Acquired in-process research and development technology (26,750) (38,000)
Purchases of investments (247,154) (641,328)
Proceeds from maturities and sales of investments 483,730 573,912
Net cash provided by (used in) investing activities 193,565 (123,377)
Cash flows from financing activities:    
Payments for repurchases of common stock (449,694) (124,239)
Proceeds from issuance of common stock under the equity incentive plan and stock purchase plan 23,238 17,422
Taxes paid related to net share settlement of equity awards (20,014) (13,389)
Net cash used in financing activities (446,470) (120,206)
Net decrease in cash and cash equivalents (64,535) (38,197)
Cash and cash equivalents at beginning of period 262,994 502,677
Cash and cash equivalents at end of period 198,459 464,480
Non-cash operating activities:    
Right-of-use assets obtained in exchange for lease obligations $ 15,313 $ 13,584