Income Taxes - Schedule of Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1,	$ 0	$ 0	$ 4,767
Decreases related to prior year tax positions	0	0	(4,767)
Increases related to prior year tax positions	0	0	0
Balance at December 31,	$ 0	$ 0	$ 0