CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 772,020	$ 1,775,888	$ 442,776
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred taxes	15,455	(1,491,577)	307
Depreciation and amortization	108,729	93,538	78,990
Stock-based compensation	114,336	98,427	88,184
Non-cash operating lease cost	26,807	22,467	18,475
Allowance for doubtful accounts provisions	2,814	12,073	5,853
Arbitration award gain	(43,403)	0	0
Impairments on long-lived assets	0	0	28,498
Equity in losses of investee	0	0	7,528
Gain on lease terminations	0	0	(6,792)
Gain from sale of equity method investment	0	0	(15,769)
Other non-cash operating activities	21,549	21,670	24,007
Changes in assets and liabilities, net of effects of acquisition:
Accounts receivable	(262,066)	(139,777)	(121,014)
Inventories	(112,450)	(29,110)	(58,269)
Prepaid expenses and other assets	(124,626)	(21,130)	(31,529)
Accounts payable	19,747	52,206	22,099
Accrued and other long-term liabilities	158,543	42,168	60,240
Long-term income tax payable	12,449	(2,802)	14,611
Deferred revenues	462,640	228,133	189,075
Net cash provided by operating activities	1,172,544	662,174	747,270
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition, net of cash acquired	(8,002)	(420,788)	0
Purchase of property, plant and equipment	(401,098)	(154,916)	(149,707)
Purchase of marketable securities	(200,928)	(5,341)	(693,284)
Proceeds from maturities of marketable securities	498	42,641	290,754
Proceeds from sales of marketable securities	3,114	278,817	194,677
Repayment on unsecured promissory note	4,594	26,925	21,820
Proceeds from arbitration award	43,403	0	0
Other investing activities	(5,011)	1,156	(14,704)
Net cash used in investing activities	(563,430)	(231,506)	(350,444)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	25,623	20,314	17,907
Common stock repurchases	(375,038)	0	(399,999)
Payroll taxes paid upon the vesting of equity awards	(108,917)	(51,122)	(57,675)
Purchase of finance lease	0	0	(45,773)
Net cash used in financing activities	(458,332)	(30,808)	(485,540)
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	(12,117)	10,480	2,282
Net increase (decrease) in cash, cash equivalents, and restricted cash	138,665	410,340	(86,432)
Cash, cash equivalents, and restricted cash at beginning of year	961,474	551,134	637,566
Cash, cash equivalents, and restricted cash at end of the period	$ 1,100,139	$ 961,474	$ 551,134