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	$ 547,629	$ 523,672	$ 651,642
Other comprehensive gain (loss):
Foreign currency translation adjustment	18,439	(44,665)	(38,514)
Change in unrealized gain (loss) on investments, net of income tax (expense) benefit of $(8,562), $6,589 and $3,412 for the years ended December 31, 2023, 2022 and 2021, respectively	26,563	(26,562)	(10,390)
Other comprehensive gain (loss)	45,002	(71,227)	(48,904)
Comprehensive income	$ 592,631	$ 452,445	$ 602,738