Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 2,087,321	$ 1,352,446	$ 840,854
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	825	(3,215)	(1,381)
Available-for-sale investments:
Changes in net unrealized gains (losses) on available-for-sale securities	25,939	(23,025)	(7,157)
Less: reclassification adjustment for net (gains) losses included in net income	3,816	632	0
Other comprehensive income (loss)	30,580	(25,608)	(8,538)
Comprehensive income	$ 2,117,901	$ 1,326,838	$ 832,316