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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Apr. 04, 2025
Mar. 29, 2024
Statement of Cash Flows [Abstract]    
Net income $ 159,616 $ 37,317
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 7,345 6,378
Stock-based compensation 25,930 19,113
Non-cash lease expense 6,096 6,764
Acquired in-process research and development technology 0 19,500
Other, net (4,786) 9,206
Changes in operating assets and liabilities:    
Trade receivables, net (16,119) (3,170)
Inventory (71) 1,715
Prepaid expenses and other assets 20,320 10,075
Accrued collaboration liabilities 4,605 (3,829)
Accounts payable and other liabilities 8,501 (34,247)
Net cash provided by operating activities 211,437 68,822
Cash flows from investing activities:    
Purchases of marketable securities (186,701) (138,468)
Proceeds from maturities and sales of marketable securities 258,917 268,452
Purchases of property, equipment and other, net (2,952) (9,691)
Acquired in-process research and development technology (19,500) (8,500)
Net cash provided by investing activities 49,764 111,793
Cash flows from financing activities:    
Payments for repurchases of common stock (283,934) (185,375)
Proceeds from issuance of common stock under the equity incentive plans 11,627 8,315
Taxes paid related to net share settlement of equity awards (22,516) (6,988)
Net cash used in financing activities (294,823) (184,048)
Net decrease in cash and cash equivalents (33,622) (3,433)
Cash and cash equivalents at beginning of period 217,374 262,994
Cash and cash equivalents at end of period $ 183,752 $ 259,561