Hedging Program and Derivatives (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014 bbl	Dec. 31, 2013
Impact of derivative contracts on balance sheet [Abstract]
Derivative asset - current	$ 12,214us-gaap_DerivativeAssetsCurrent	$ 85us-gaap_DerivativeAssetsCurrent
Derivative asset - long-term	10,981us-gaap_DerivativeAssetsNoncurrent	925us-gaap_DerivativeAssetsNoncurrent
Derivative Assets	23,195us-gaap_DerivativeAssets	1,010us-gaap_DerivativeAssets
Derivative liability - current	13us-gaap_DerivativeLiabilitiesCurrent	2,728us-gaap_DerivativeLiabilitiesCurrent
Derivative liability - long-term	0us-gaap_DerivativeLiabilitiesNoncurrent	2,274us-gaap_DerivativeLiabilitiesNoncurrent
Derivative Liabilities	13us-gaap_DerivativeLiabilities	5,002us-gaap_DerivativeLiabilities
Commodity Price Derivatives [Member] \| Derivative Asset - Current [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative asset - current	12,214	85
Commodity Price Derivatives [Member] \| Derivative Asset - Long-Term [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative asset - long-term	10,981	925
Commodity Price Derivatives [Member] \| Derivative Liability - Current [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative liability - current	13	2,728
Commodity Price Derivatives [Member] \| Derivative Liability - Long-Term [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative liability - long-term	$ 0	$ 2,274
Oil - WTI [Member] \| 2015 [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Daily Volume (in Bbl)	1,045
Swap Price (in dollars per Bbl)	85.04
Oil - WTI [Member] \| 2016 [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Daily Volume (in Bbl)	948
Swap Price (in dollars per Bbl)	84.10
Oil - WTI [Member] \| 2017 [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Daily Volume (in Bbl)	493
Swap Price (in dollars per Bbl)	84.18
Oil - LLS [Member] \| 2016 [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Daily Volume (in Bbl)	0
Swap Price (in dollars per Bbl)	0.00
Oil - LLS [Member] \| 2017 [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Daily Volume (in Bbl)	0
Swap Price (in dollars per Bbl)	0.00

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Fixed price related to the price risk swap derivative.

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