Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 10,889	$ 28,692	$ 143,544	$ 51,912
Other comprehensive income (loss), before tax and net of reclassification adjustments:
Foreign currency translation adjustment	3,938	2,265	(1,975)	(802)
Unrealized gain (loss) on securities available-for-sale	2,634	738	(154)	1,913
Unrealized loss on derivative instruments	(74)	(1,480)	(598)	(268)
Other comprehensive income (loss), before tax	6,498	1,523	(2,727)	843
Tax (benefit) expense related to items of other comprehensive income	(56)	(268)	68	(58)
Other comprehensive income (loss), net of tax	6,554	1,791	(2,795)	901
Comprehensive income	$ 17,443	$ 30,483	$ 140,749	$ 52,813