Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 330,469	$ 318,582
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,940	28,349
Amortization of premium (discount) on available-for-sale securities	(1,591)	3,682
(Gain) loss on deferred compensation plan investments	(3,411)	8,607
Gain on sales of equity investment	(1,424)	0
Deferred taxes, net	10,927	(1,217)
Stock-based compensation expense	108,603	125,723
Other	(23)	97
Changes in operating assets and liabilities:
Accounts receivable	(3,103)	(48,608)
Inventories	49,989	(138,241)
Other assets	(21,423)	(172,050)
Accounts payable	6,915	6,274
Accrued compensation and related benefits	(22,355)	45,054
Income tax liabilities	(12,797)	5,734
Other accrued liabilities	14,184	12,485
Net cash provided by operating activities	484,900	194,471
Cash flows from investing activities:
Purchases of property and equipment	(43,772)	(46,002)
Purchases of investments	(492,638)	(18,327)
Maturities and sales of investments	328,181	104,991
Contributions to deferred compensation plan, net	(4,466)	(2,993)
Net cash provided by (used in) investing activities	(212,695)	37,669
Cash flows from financing activities:
Property and equipment purchased on extended payment terms	(2,732)	(1,587)
Proceeds from common stock issued under the employee equity incentive plan	1,118	4,345
Proceeds from common stock issued under the employee stock purchase plan	7,568	5,877
Dividends and dividend equivalents paid	(135,265)	(101,564)
Net cash used in financing activities	(129,311)	(92,929)
Effect of change in exchange rates	(10,323)	(12,275)
Net increase in cash, cash equivalents and restricted cash	132,571	126,936
Cash, cash equivalents and restricted cash, beginning of period	288,729	189,389
Cash, cash equivalents and restricted cash, end of period	421,300	316,325
Supplemental disclosures for cash flow information:
Cash paid for income taxes, net	73,678	61,430
Non-cash investing and financing activities:
Liability accrued for property and equipment purchases	2,893	4,710
Liability accrued for dividends and dividend equivalents	$ 52,509	$ 39,672