Acquisitions (Details) (USD $)	0 Months Ended	9 Months Ended			0 Months Ended					0 Months Ended
	Jul. 03, 2013	Sep. 30, 2014	Sep. 30, 2013	Jul. 03, 2013 Gulf of Mexico Acquisition platform well	Jul. 03, 2013 Gulf of Mexico Acquisition General and Administrative Expense Bridge Loan [Member]	Sep. 30, 2014 10% Senior Notes Senior Notes	Sep. 30, 2013 10% Senior Notes Senior Notes	Jul. 03, 2013 10% Senior Notes Senior Notes	Aug. 19, 2010 10% Senior Notes Senior Notes	Jul. 03, 2013 10% Senior Notes Gulf of Mexico Acquisition
Business Acquisition [Line Items]
Purchase price										$ 188,800,000
Number of wells acquired				16
Number of platforms purchased				7
Principal amount	200,000,000							200,000,000	150,000,000
Interest rate of Senior Notes						10.00%	10.00%	10.00%	10.00%
Payments of financing costs	5,000,000	204,000	487,000
Acquisition-related costs	$ 4,000,000				$ 2,600,000