Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income	$ 66,594	$ 91,581	$ 131,943	$ 121,119
Other comprehensive income (loss):
Foreign currency translation adjustment	3,972	(4,068)	7,782	(9,468)
Change in net unrealized (loss) gain on derivatives	(7,195)	5,084	(14,693)	14,482
Comprehensive income	$ 63,371	$ 92,597	$ 125,032	$ 126,133