Long-Term Debt (Details) (USD $)			3 Months Ended				3 Months Ended				3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Senior Secured Credit facility [Member]	Oct. 01, 2013 Senior Secured Credit facility [Member]	Apr. 30, 2013 Senior Secured Credit facility [Member]	Dec. 31, 2012 Senior Secured Credit facility [Member]	Mar. 31, 2013 Senior Secured Credit facility [Member] Maximum [Member]	Mar. 31, 2013 Senior Secured Credit facility [Member] Minimum [Member]	Mar. 31, 2013 Rig loan agreement [Member] hp	Dec. 31, 2012 Rig loan agreement [Member]	Mar. 31, 2013 Real estate lien note [Member]	Dec. 31, 2012 Real estate lien note [Member]	May 09, 2008 Real estate lien note [Member]
Long-term debt [Abstract]
Long-term debt	$ 130,711,000	$ 124,758,000	$ 119,000,000			$ 113,000,000			$ 7,000,000	$ 7,000,000	$ 4,711,000	$ 4,758,000	$ 5,400,000
Less current maturities	(1,155,000)	(657,000)
Long-term debt, excluding current maturities	129,556,000	124,101,000
Credit Facility [Abstract]
Maximum borrowing capacity			300,000,000
Current borrowing base				145,000,000	155,000,000	150,000,000
Number of reserve reports prepared by independent petroleum engineers			1
Number of reserve report prepared internally			1
Number of borrowing base redetermination			1
Term of borrowing base redetermination			6 months
Market value of property (in hundredths)			5.00%
Reduced collateral value (in hundredths)			5.00%
Percentage added to reference rate (in hundredths)							2.25%	1.25%
Percentage added to variable rate of interest (in hundredths)			0.50%				3.25%	2.25%
Interest rate on credit facility (in hundredths)			3.20%
Description of variable rate basis			LIBOR
Financial covenants, minimum current ratio			1.00
Financial covenants, interest coverage ratio			2.50
Financial covenants, total debt To EBITDAX ratio			4.00
Interest coverage ratio			6.45
Total debt to EBITDAX ratio			3.99
Current ratio			1.05
Rig Loan Agreement [Abstract]
Power of diesel electric drilling rig (in horsepower)									2,000
Maximum amount that can be borrowed under rig loan agreement									7,000,000
Term of interest due on note									Interest only is due for the first 18-months of the note and thereafter, the note will amortize in full over the remaining life of the note.
Interest rate on debt (in hundredths)									4.26%
Real Estate Lien Note [Abstract]
Fixed interest rate on note (in hundredths)											4.00%
Monthly installments of principal and interest											$ 33,763
Amortization term of debt instrument											20 years
Maturity date of note											May 09, 2015