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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net income $ 445,053 $ 361,573 $ 772,020
Adjustments to reconcile net income to net cash provided by operating activities:      
Deferred taxes (18,642) (39,495) 15,455
Depreciation and amortization 142,401 125,793 108,729
Stock-based compensation 154,026 133,367 114,336
Non-cash operating lease cost 33,107 30,520 26,807
Impairments on equity investments 4,990 0 0
Arbitration award gain 0 0 (43,403)
Other non-cash operating activities 32,733 41,288 24,363
Changes in assets and liabilities, net of effects of acquisitions:      
Accounts receivable (104,614) 21,549 (262,066)
Inventories 30,169 (130,097) (112,450)
Prepaid expenses and other assets (51,013) (65,514) (124,626)
Accounts payable (7,703) (36,523) 19,747
Accrued and other long-term liabilities 46,327 (121,942) 158,543
Long-term income tax payable (7,772) 6,327 12,449
Deferred revenues 86,714 241,886 462,640
Net cash provided by operating activities 785,776 568,732 1,172,544
CASH FLOWS FROM INVESTING ACTIVITIES:      
Acquisitions, net of cash acquired 0 (12,304) (8,002)
Purchase of property, plant and equipment (177,716) (291,900) (401,098)
Purchase of marketable securities (2,910) (28,002) (200,928)
Proceeds from maturities of marketable securities 55,170 23,785 498
Proceeds from sales of marketable securities 6,234 97,316 3,114
Repayment on unsecured promissory note 0 0 4,594
Proceeds from arbitration award 0 0 43,403
Purchase of equity investments (76,999) 0 0
Other investing activities 278 (2,211) (5,011)
Net cash used in investing activities (195,943) (213,316) (563,430)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Proceeds from issuance of common stock 26,595 26,149 25,623
Common stock repurchases (592,360) (435,036) (375,038)
Activity for equity forward contracts related to accelerated stock repurchase agreements, net (10,000) (40,000) 0
Payroll taxes paid upon the vesting of equity awards (22,575) (52,799) (108,917)
Net cash used in financing activities (598,340) (501,686) (458,332)
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash 4,671 (11,514) (12,117)
Net (decrease) increase in cash, cash equivalents, and restricted cash (3,836) (157,784) 138,665
Cash, cash equivalents, and restricted cash at beginning of year 942,355 1,100,139 961,474
Cash, cash equivalents, and restricted cash at end of year $ 938,519 $ 942,355 $ 1,100,139