Condensed Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 31,622	$ 27,121	$ 49,763	$ 42,345
Other comprehensive loss, net of tax:
Net unrealized gain (loss) on hedges arising during the period	(274)	(88)	(701)	839
Reclassifications to net income	1,046	1,799	4,867	5,233
Income taxes on hedges	(156)	(357)	(838)	(1,298)
Net change in hedges, net of tax	616	1,354	3,328	4,774
Unrealized loss on note receivable arising during the period	0	0	0	(629)
Income taxes on note receivable	0	0	0	132
Unrealized loss on note receivable, net of tax	0	0	0	(497)
Foreign currency translation loss	(4,301)	(1,421)	(4,564)	(4,277)
Other comprehensive loss, net of tax	(3,685)	(67)	(1,236)	0
Comprehensive income	27,937	27,054	48,527	42,345
Less comprehensive loss attributable to redeemable noncontrolling interests:
Net loss	(73)	0	(104)	0
Foreign currency translation loss	(78)	0	(78)	0
Comprehensive loss attributable to redeemable noncontrolling interests	(151)	0	(182)	0
Comprehensive income attributable to common shareholders	$ 28,088	$ 27,054	$ 48,709	$ 42,345