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 Income And Comprehensive Income [Abstract]
Net income	$ 10,896	$ 7,502	$ 37,219	$ 29,824
Unrealized net gain (loss) from cash flow hedging instruments	(527)	506	(162)	(1,180)
Realization of cash flow hedging net (gain) loss upon settlement	322	(47)	1,015	(379)
Foreign currency translation adjustments	(1,498)	(2,593)	(1,670)	(3,544)
Other comprehensive loss, before tax	(1,703)	(2,134)	(817)	(5,103)
Income tax benefit (expense) related to other comprehensive loss	54	(120)	(224)	408
Other comprehensive loss, net of tax	(1,649)	(2,254)	(1,041)	(4,695)
Comprehensive income	9,247	5,248	36,178	25,129
Less: Comprehensive income attributable to non-controlling interests	(1,410)	(1,651)	(8,017)	(7,538)
Comprehensive income attributable to common shareholders	$ 7,837	$ 3,597	$ 28,161	$ 17,591