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Derivative and Hedging Financial Instruments - Summary of Fair Value of Derivatives (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Derivative assets fair value
Warrant derivative liability		2,808,278
Derivative liabilities fair value	125,773	2,808,278
Current Liabilities [Member]
Derivative [Line Items]
Commodity derivative, Current liabilities	58,176
Noncurrent Liabilities [Member]
Derivative [Line Items]
Commodity derivative, Noncurrent liabilities	67,597
Warrant derivative liability		2,808,278
Current Assets [Member]
Derivative [Line Items]
Commodity derivative, Current assets
Noncurrent Assets [Member]
Derivative [Line Items]
Commodity derivative, Noncurrent assets

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details