Fair Value Measurements (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Quoted Prices in Active Markets (Level 1)
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Commodity Derivatives Fair Value	$ 0	$ 0
Significant Other Observable Inputs (Level 2)
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Commodity Derivatives Fair Value	1,508,000	8,631,000
Significant Unobservable Inputs (Level 3)
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Commodity Derivatives Fair Value	$ 0	0
10% Senior Notes
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Stated interest rate (as a percent)	10.00%
Estimated fair value of the Notes	$ 350,000,000
10% Senior Notes | Significant Other Observable Inputs (Level 2)
Net valuation of the Company's derivatives subject to fair value measurement on a recurring basis
Estimated fair value of the Notes	$ 238,000,000	$ 301,000,000