Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 436,473	$ 272,259
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	292	(373)
Available-for-sale investments:
Change in net unrealized gains (losses) on available-for-sale securities	8,253	(21,828)
Reclassification adjustment included in net income	3,858	0
Other comprehensive income (loss)	12,403	(22,201)
Comprehensive income	$ 448,876	$ 250,058