Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 162,151	$ 155,057	$ 52,411
Other comprehensive income, before tax and net of reclassification adjustments:
Foreign currency translation adjustment	(3,346)	(9,768)	24,470
Unrealized gain (loss) on securities available-for-sale	1,141	(378)	(120)
Unrealized (loss) gain on derivative instruments	(2,629)
Unrealized (loss) gain on derivative instruments		12,525	(9,488)
Other comprehensive income, before tax	(4,834)	2,379	14,862
Tax (benefit) provision related to items of other comprehensive income	(695)	2,801	(3,250)
Other comprehensive (loss) income, net of tax	(4,139)	(422)	18,112
Comprehensive income	$ 158,012	$ 154,635	$ 70,523