Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Current:
State						$ 91
Total current						91
Deferred:
Federal						(26,214)	$ 21,803
State						(319)	302
Total deferred						(26,533)	22,105
Total income tax (benefit) provision	$ (26,373)	$ 811	$ (295)	$ (585)	$ 22,105	$ (26,442)	$ 22,105