Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 397,089	$ 209,536	$ 195,896
Other comprehensive income (loss):
Change in fair value of interest rate swaps	24,598	(4,929)	(12,061)
Total comprehensive income	421,687	204,607	183,835
Less: comprehensive income attributable to noncontrolling interests	32,438	20,001	17,120
Comprehensive income attributable to common stockholders	$ 389,249	$ 184,606	$ 166,715