Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Cash flows from operating activities:
Net income	$ 193,226	$ 135,052
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	15,106	11,449
Loss on deferred compensation plan investments	1,588	1,350
Deferred taxes, net	(152)	7,170
Stock-based compensation expense	41,098	52,806
Other	(696)	(748)
Changes in operating assets and liabilities:
Accounts receivable	(46,512)	(42,338)
Inventories	(54,507)	(35,180)
Other assets	17,525	78,005
Accounts payable	29,730	21,296
Accrued compensation and related benefits	12,576	10,609
Income tax liabilities	25,973	21,471
Other accrued liabilities	15,298	(4,555)
Net cash provided by operating activities	250,253	256,387
Cash flows from investing activities:
Purchases of property and equipment	(70,849)	(40,342)
Sales of property and equipment	6,422	0
Purchases of investments	(161,809)	(357,633)
Maturities and sales of investments	14,437	141,065
Contributions to deferred compensation plan	(523)	(575)
Net cash used in investing activities	(212,322)	(257,485)
Cash flows from financing activities:
Property and equipment purchased on extended payment terms	(2,697)	(1,243)
Proceeds from common stock issued	5,830	5,335
Dividends and dividend equivalents paid	(78,399)	(60,008)
Net cash used in financing activities	(75,266)	(55,916)
Effect of change in exchange rates	961	2,555
Net decrease in cash, cash equivalents and restricted cash	(36,374)	(54,459)
Cash, cash equivalents and restricted cash, beginning of period	1,099,521	691,941
Cash, cash equivalents and restricted cash, end of period	1,063,147	637,482
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets:
Cash and cash equivalents	1,062,930	637,354
Restricted cash included in other long-term assets	217	128
Total cash, cash equivalents, and restricted cash	1,063,147	637,482
Supplemental disclosures for cash flow information:
Cash paid (refunded) for income taxes, net	31,438	(218)
Non-cash investing and financing activities:
Liability accrued for property and equipment purchases	11,038	14,611
Liability accrued for dividends and dividend equivalents	$ 99,312	$ 75,939