Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 107,015	$ 190,308
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	3,067	(4,558)
Unrealized gain (loss) on investments:
Unrealized gains (losses) during the period, net of income taxes of $(385) and $1,186	1,287	(3,969)
Reclassification adjustment for losses realized in net income, net of income taxes of $(11) and $(57)	35	189
Total other comprehensive income (loss), net of tax	4,389	(8,338)
Comprehensive income	$ 111,404	$ 181,970