Fair Value Measurements (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	Jul. 03, 2013	Aug. 19, 2010
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Face Value	$ 266,045,000	$ 280,295,000
Senior Notes | 10% Senior Unsecured Notes due 2017
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Face Value	0	22,650,000	$ 200,000,000	$ 150,000,000
Senior Notes | 10% Senior Secured Notes due 2021
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Face Value	14,177,000	14,177,000
Payment in Kind (PIK) Note | 10% Senior Secured PIK Notes due 2021
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Face Value	251,868,000	243,468,000
Fair Value
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	204,038,000	211,894,000
Fair Value | Senior Notes | 10% Senior Unsecured Notes due 2017
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	0	21,970,000
Fair Value | Senior Notes | 10% Senior Secured Notes due 2021
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	12,618,000	12,192,000
Fair Value | Payment in Kind (PIK) Note | 10% Senior Secured PIK Notes due 2021
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	191,420,000	177,732,000
Carrying Value
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	269,304,000	286,396,000
Carrying Value | Senior Notes | 10% Senior Unsecured Notes due 2017
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	0	22,568,000
Carrying Value | Senior Notes | 10% Senior Secured Notes due 2021
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	15,174,000	15,228,000
Carrying Value | Payment in Kind (PIK) Note | 10% Senior Secured PIK Notes due 2021
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Long-term debt, fair value	254,130,000	248,600,000
Quoted Prices in Active Markets (Level 1)
Derivatives, Fair Value [Line Items]
Commodity derivatives at fair value	0	0
Significant Other Observable Inputs (Level 2)
Derivatives, Fair Value [Line Items]
Commodity derivatives at fair value	(1,561,000)	(4,750,000)
Significant Unobservable Inputs (Level 3)
Derivatives, Fair Value [Line Items]
Commodity derivatives at fair value	$ 0	$ 0