Subsequent Event (Details) - USD ($)	Feb. 17, 2016	Jan. 14, 2016	Dec. 31, 2015	Dec. 31, 2014	Jul. 03, 2013
10% Senior Notes | Senior Notes
Subsequent Event [Line Items]
Long-term debt			$ 300,000,000
Stated interest rate (as a percent)			10.00%	10.00%	10.00%
10% Senior Notes | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Long-term debt	$ 135,600,000
Private Exchange Offer and Consent Solicitation | Subsequent Event
Subsequent Event [Line Items]
Maximum cash consideration to be paid		$ 75,000,000
Shares to be issued		$ 6,000,000
Original debt, amount	$ 214,400,000
Original debt, percent of total	61.00%
Repayments of debt	$ 53,600,000
Private Exchange Offer and Consent Solicitation | Second LIen Senior Secured Notes due 2021 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Stated interest rate (as a percent)		10.00%
Aggregate principal to be issued		$ 202,500,000.0
Converted instrument, amount	$ 144,700,000
Common Stock | Private Exchange Offer and Consent Solicitation | Subsequent Event
Subsequent Event [Line Items]
Shares issued	4,287,580