UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 65,443	$ 54,910	$ 154,254	$ 95,505
Other comprehensive (loss) income, net of tax:
Unrealized (losses) gains on available-for-sale securities	(18)	(121)	(140)	111
Unrealized (losses) gains on interest rate hedge	(99)	(123)	2,660	(21,505)
Reclassification adjustment for losses on interest rate hedge included in net income	2,532	2,468	7,474	5,696
Foreign currency translation adjustments	(14,242)	10,161	767	(13,695)
Other comprehensive (loss) income, net of tax	(11,827)	12,385	10,761	(29,393)
Comprehensive income	$ 53,616	$ 67,295	$ 165,015	$ 66,112