Income Taxes - Schedule of Reconciliation on Income Tax Benefit Computed at Statutory Federal Rate and Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
Income tax benefit—computed as 35% of pretax loss	$ (82,286)	$ (85,235)	$ (60,546)
Effect of non-controlling interests and redeemable non-controlling interests	91,183	93,221	47,962
Goodwill impairment	12,810
Amortization of prepaid tax asset	11,750	6,661	2,199
Effect of nondeductible expenses	6,942	1,232	6,617
State and local income tax expenses (net of federal benefit)	4,298	2,289	616
Effect of domestic production activities deduction	(473)	(4,699)
Effect of tax credits	(36,328)	(4,106)	(3,939)
Other	(463)	374	21
Income tax expense (benefit)	$ 7,433	$ 9,737	$ (7,070)