Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Commitments) (Details)

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Commitments and Contingencies (Commitments) (Details) (USD $)
0 Months Ended 0 Months Ended
Nov. 02, 2012
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2013
Grizzly [Member]
Sep. 30, 2013
Executive Officer [Member]
Mar. 11, 1997
WCBB [Member]
wells
Sep. 30, 2013
WCBB [Member]
wells
Commitments [Line Items]              
Percentage of interest in WCBB           50.00%  
Contribution to plugging and abandonment trust           $ 18,000  
Annual minimum wells to be plugged           20  
Tenure of minimum wells to be plugged, years           20 years  
Plugging and abandonment escrow account   3,105,000 3,113,000        
Number of wells plugged             354
Employment agreement 3 years            
Extension period 1 year            
Notice period 90 days            
Other Commitment       $ 6,100,000 $ 4,700,000