DERIVATIVE FINANCIAL INSTRUMENTS (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014 item	Dec. 31, 2013
Fair value of net derivatives
Derivative Assets, Non-current	$ 88	$ 43
Derivative Liabilities, current	(2,755)	(3,517)
Derivative's Credit risk
Number of counterparties to the commodity derivative contracts	2
Commodity derivatives \| Not designated as hedging instruments
Fair value of net derivatives
Derivative Assets	88	43
Derivative Liabilities	(2,755)	(3,517)
Commodity derivatives \| Not designated as hedging instruments \| Oil
Fair value of net derivatives
Derivative Liabilities, current	(1,195)	(2,709)
Commodity derivatives \| Not designated as hedging instruments \| Natural Gas
Fair value of net derivatives
Derivative Assets, Non-current	88	43
Derivative Liabilities, current	$ (1,560)	$ (808)

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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Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

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Carrying amount as of the balance sheet date of the assets arising from derivative contracts and hedging activities, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer.

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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.

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Represents the number of counterparties to the entity's commodity derivative contracts.

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