Income Taxes - Loss Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Loss attributable to common stockholders	$ 33,545	$ 80,895	$ 1,792
Loss attributable to noncontrolling interest and redeemable noncontrolling interests	220,660	86,638	64,294
Total	$ 254,205	$ 167,533	$ 66,086