UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 67,075	$ 29,023	$ 88,811	$ 40,595
Other comprehensive income (loss), net of tax:
Unrealized (losses) gains on available-for-sale securities	(48)	296	(122)	232
Unrealized (losses) gains on interest rate hedge	(349)	(3,000)	2,759	(21,382)
Reclassification adjustment for losses on interest rate hedge included in net income	2,494	2,130	4,942	3,228
Foreign currency translation adjustments	8,543	18,102	15,009	(23,856)
Other comprehensive income (loss), net of tax	10,640	17,528	22,588	(41,778)
Comprehensive income (loss)	$ 77,715	$ 46,551	$ 111,399	$ (1,183)