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8. Derivatives - Loss on derivative instruments included in the consolidated statements of operations (Details 2) (USD $)
3 Months Ended 9 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Derivatives - Loss On Derivative Instruments Included In Consolidated Statements Of Operations Details        
Unrealized gain (loss) on open non-hedge derivative instruments $ 54,839us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts $ 18,594us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts $ 102,830us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts $ (38,023)us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts
Loss on settlement of non-hedge derivative instruments 25,281us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet (11,190)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet (4,959)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet (41,261)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Total gain (loss) on derivated instruments $ 80,120us-gaap_GainLossOnDerivativeInstrumentsNetPretax $ 7,404us-gaap_GainLossOnDerivativeInstrumentsNetPretax $ 97,871us-gaap_GainLossOnDerivativeInstrumentsNetPretax $ (79,284)us-gaap_GainLossOnDerivativeInstrumentsNetPretax