CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 109,112	$ 58,196
Other comprehensive income (loss)
Foreign currency translation	4,334	(4,730)
Cash flow hedges	1,254	(8,876)
Total other comprehensive income (loss)	5,588	(13,606)
Comprehensive income	114,700	44,590
Comprehensive income attributable to noncontrolling interest	(4,911)	(2,025)
Comprehensive income attributable to common stockholders	$ 109,789	$ 42,565