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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 301,916 $ 147,270
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 72,819 77,525
Non-cash interest expense 2,699 3,198
Accretion of discount on investments (6,619) (6,781)
Stock-based compensation 149,652 152,244
Gain on sale of nonfinancial assets (10,000) 0
Impairment of assets and other non-cash adjustments 19,889 12,650
Deferred income taxes 13,709 (20,137)
Unrealized foreign exchange loss (gain) (22,352) 5,454
Other (1,254) (224)
Changes in operating assets and liabilities:    
Accounts receivable, net (130,456) (131,940)
Inventory (29,259) (97,948)
Other current assets (19,939) (59,389)
Other assets (31,839) (20,812)
Accounts payable and other short-term liabilities 68,019 56,333
Other long-term liabilities 10,229 14,333
Net cash provided by operating activities 387,214 131,776
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (65,894) (67,774)
Maturities and sales of investments 478,436 751,677
Purchases of investments (352,371) (727,043)
Proceeds from sale of nonfinancial assets 10,000 0
Purchase of intangible assets (11,225) (3,141)
Other 1,141 0
Net cash provided by (used in) investing activities 60,087 (46,281)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from exercises of awards under equity incentive plans 41,415 54,548
Taxes paid related to net share settlement of equity awards (72,651) (72,399)
Payments of contingent consideration 0 (9,475)
Repayments of convertible debt (494,987) 0
Other (3,083) (2,241)
Net cash used in financing activities (529,306) (29,567)
Effect of exchange rate changes on cash 2,326 4,955
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (79,679) 60,883
Cash and cash equivalents:    
Beginning of period 755,127 724,531
End of period 675,448 785,414
SUPPLEMENTAL CASH FLOW DISCLOSURES:    
Cash paid for interest 6,654 6,640
Cash paid for income taxes 36,088 51,687
SUPPLEMENTAL CASH FLOW DISCLOSURES FOR NON-CASH INVESTING AND FINANCING ACTIVITIES:    
Increase in accounts payable and accrued liabilities related to fixed assets 8,457 7,977
Increase (decrease) in accounts payable and accrued liabilities related to intangible assets $ (9,059) $ 6,449