Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity warrant liability	$ (1,565)
Equity warrant liability - related parties	(2,994)
Total	(6,939)	$ 36,083
Commodity Derivatives
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets	1,730	36,083
Liabilities	(4,110)
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total	(2,380)	36,083
Significant Other Observable Inputs (Level 2) | Commodity Derivatives
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets	1,730	$ 36,083
Liabilities	(4,110)
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity warrant liability	(1,565)
Equity warrant liability - related parties	(2,994)
Total	$ (4,559)