Condensed Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 16,823	$ 17,784	$ 18,141	$ 15,224
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on hedges arising during the period	(278)	(1,226)	(427)	927
Reclassifications to net income	1,975	1,807	3,821	3,434
Income taxes on hedges	(340)	(126)	(682)	(941)
Net change in hedges, net of tax	1,357	455	2,712	3,420
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	(3,065)	(7,547)	(263)	(2,856)
Other comprehensive income (loss), net of tax	(1,708)	(7,092)	2,449	67
Comprehensive income	15,115	10,692	20,590	15,291
Comprehensive loss attributable to redeemable noncontrolling interests	(31)	0	(31)	0
Comprehensive income attributable to common shareholders	$ 15,146	$ 10,692	$ 20,621	$ 15,291