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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 $ 317,555 $ 321,039
Adjustments to reconcile net income to net cash provided by operating activities:    
Deferred taxes 17,465 (22,749)
Depreciation and amortization 106,905 108,669
Stock-based compensation 134,855 115,197
Non-cash operating lease cost 28,603 24,034
Impairment of equity investment 115 3,329
Other non-cash operating activities 6,931 28,435
Changes in assets and liabilities, net of effects of acquisitions:    
Accounts receivable (135,239) (80,297)
Inventories 32,304 31,639
Prepaid expenses and other assets (26,283) 1,773
Accounts payable (13,283) (23,130)
Accrued and other long-term liabilities 47,618 156,024
Long-term income tax payable (5,186) (7,979)
Deferred revenues (60,207) 82,894
Net cash provided by operating activities 452,153 738,878
CASH FLOWS FROM INVESTING ACTIVITIES:    
Acquisitions, net of cash acquired (77,075) 0
Purchase of property, plant and equipment (92,619) (144,302)
Purchase of marketable securities 0 (2,373)
Proceeds from maturities of marketable securities 25,660 35,754
Proceeds from sales of marketable securities 18,193 5,173
Purchase of equity investments (75,390) (76,999)
Other investing activities 235 128
Net cash used in investing activities (200,996) (182,619)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from issuance of common stock 25,281 26,595
Common stock repurchases (150,012) (292,360)
Activity for equity forward contracts related to accelerated stock repurchase agreements, net 0 40,000
Payroll taxes paid upon the vesting of equity awards (27,972) (22,294)
Net cash used in financing activities (152,703) (248,059)
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash 6,008 (11,205)
Net increase in cash, cash equivalents, and restricted cash 104,462 296,995
Cash, cash equivalents, and restricted cash at beginning of the period 938,519 942,355
Cash, cash equivalents, and restricted cash at end of the period $ 1,042,981 $ 1,239,350