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Components of The Deferred Tax Assets and Liabilities (Detail) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Non-current deferred tax asset:    
Oil costs and long-lived assets $ 698,339 $ 609,215
Derivative instruments 612,139 927,333
Net operating loss carry-forward 8,010,770 7,960,080
Valuation allowance (9,321,248) (9,496,628)
Deferred Tax Assets, Net of Valuation Allowance $ 0 $ 0