Long-Term Debt (Details) (USD $)	3 Months Ended				3 Months Ended
	Mar. 31, 2013 Rate	Dec. 31, 2012	Jul. 02, 2012	Jun. 30, 2012	Mar. 31, 2013 Maximum [Member] Rate	Mar. 31, 2013 Minimum [Member] Rate	Aug. 19, 2010 10% Senior Notes [Member] Rate	Mar. 31, 2013 Letters of credit [Member]	Mar. 31, 2013 Federal Funds Effective Rate [Member] Rate	Mar. 31, 2013 Adjusted LIBOR rate [Member] Maximum [Member] Rate	Mar. 31, 2013 Adjusted LIBOR rate [Member] Minimum [Member] Rate
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	$ 160,900,000	$ 155,300,000
Long-Term Debt (Textual) [Abstract]
Principal amount							150,000,000
Interest rate of Senior Notes							10.00%
Revolving Credit facility	300,000,000							25,000,000
Adjusted LIBO rate	1.00%				1.50%	0.50%			0.50%	2.50%	1.50%
Commitment fees on a sliding scale					0.50%	0.375%
Repurchase Company's common stock					10,000,000
Maximum ratio of total debt to EBITDAX					3.0	1,000.0
Borrower's Liquidity						20.00%
Long Term Debt (Additional Textual) [Abstract]
Borrowings outstanding under the Credit Agreement	60,000,000
Current borrowing base			150,000,000	130,000,000
Aggregate commitments of the lenders	100,000,000
At least secured percentage value of oil and gas properties	80.00%
Accrued in connection with the interest payment	5,000,000
Adjusted LIBO rate is equal to the rate at which dollar deposits	$ 1,300,000
Agreement bear interest at the alternate base rate	Agreement bear interest at the alternate base rate (“ABR”) plus a margin (based on a sliding scale of 0.5% to 1.5% depending on total commitments) or the adjusted LIBO rate (“Eurodollar”) plus a margin (based on a sliding scale of 1.5% to 2.5% depending on total commitments). The alternate base rate is equal to the highest of (i) the JPMorgan Chase prime rate, (ii) the Federal Funds Effective Rate plus 0.5% or (iii) the adjusted LIBO rate plus 1%.