Condensed Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 24,445	$ 31,622	$ 15,967	$ 49,763
Other comprehensive income, net of tax:
Net unrealized loss on hedges arising during the period	0	(274)	(95)	(701)
Reclassifications into earnings	0	1,046	452	4,867
Income taxes on hedges	0	(156)	(72)	(838)
Net change in hedges, net of tax	0	616	285	3,328
Foreign currency translation gain (loss)	19,426	(4,301)	(16,057)	(4,564)
Other comprehensive income (loss), net of tax	19,426	(3,685)	(15,772)	(1,236)
Comprehensive income	43,871	27,937	195	48,527
Less comprehensive income (loss) attributable to redeemable noncontrolling interests:
Net loss	(54)	(73)	(2,044)	(104)
Foreign currency translation gain (loss)	133	(78)	(115)	(78)
Comprehensive gain (loss) attributable to redeemable noncontrolling interests	79	(151)	(2,159)	(182)
Comprehensive income attributable to common shareholders	$ 43,792	$ 28,088	$ 2,354	$ 48,709