Long-Term Debt (Details) (USD $)	9 Months Ended	12 Months Ended			12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012 Rate	Sep. 28, 2012	Sep. 27, 2012	Dec. 31, 2012 Maximum [Member] Rate	Dec. 31, 2012 Minimum [Member] Rate	Aug. 19, 2010 10% Senior Notes [Member]	Dec. 31, 2012 Letters of credit [Member]	Dec. 31, 2012 Federal Funds Effective Rate [Member] Rate	Dec. 31, 2012 Adjusted LIBOR rate [Member] Maximum [Member] Rate	Dec. 31, 2012 Adjusted LIBOR rate [Member] Minimum [Member] Rate
Long-Term Debt (Textual) [Abstract]
Principal amount							$ 150,000,000
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]
Current borrowing base			130,000,000	125,000,000
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		$ 5,000,000
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%.