Condensed Consolidated Statements Of Comprehensive Income (Unaudited) - 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 (loss)	$ (19,043)	$ 24,445	$ (35,776)	$ 15,967
Other comprehensive income (loss), net of tax:
Net unrealized loss on hedges arising during the period				(95)
Reclassifications into earnings				452
Income taxes on hedges				(72)
Net change in hedges, net of tax				285
Foreign currency translation gain (loss)	(13,447)	19,426	(6,478)	(16,057)
Other comprehensive income (loss), net of tax	(13,447)	19,426	(6,478)	(15,772)
Comprehensive income (loss)	(32,490)	43,871	(42,254)	195
Less comprehensive income (loss) attributable to redeemable noncontrolling interests:
Net loss		(54)	(146)	(2,044)
Foreign currency translation gain (loss)		133	48	(115)
Comprehensive income (loss) attributable to redeemable noncontrolling interests		79	(98)	(2,159)
Comprehensive income (loss) attributable to common shareholders	$ (32,490)	$ 43,792	$ (42,156)	$ 2,354