Redeemable Non-controlling Interests and Non-controlling Interest - Summary of Activity for Account Balances Whose Fair Value Measurements are Estimated Utilizing Level 3 Inputs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Redeemable Noncontrolling Interests [Roll Forward]
Net income	$ (49,917)	$ (49,814)
Fair value adjustments		2,626
Redeemable Non-controlling Interests [Member]
Redeemable Noncontrolling Interests [Roll Forward]
Beginning period balance		99,000
Net income		2,626
Fair value adjustments		(2,626)
Purchase of non-controlling interest		$ (99,000)