Hedging Program and Derivatives (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($) $ / bbl bbl	Dec. 31, 2015 USD ($)
Impact of derivative contracts on balance sheet [Abstract]
Derivative asset - current	$ 54	$ 18,902
Derivative asset - long-term	0	8,463
Derivative Assets	54	27,365
Derivative liability - current	2,382	0
Derivative liability - long-term	6,630	0
Derivative Liabilities	$ 9,012	0
Three-way Collar [Member] \| Not Designated as Hedging Instrument [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Daily Volume (in Bbl) \| bbl	5,000
Derivative Asset - Current [Member] \| Commodity Price Derivatives [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative asset - current	$ 54	18,902
Derivative Asset - Long-Term [Member] \| Commodity Price Derivatives [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative asset - long-term	0	8,463
Derivative Liability - Current [Member] \| Commodity Price Derivatives [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative liability - current	2,382	0
Derivative Liability - Long-Term [Member] \| Commodity Price Derivatives [Member]
Impact of derivative contracts on balance sheet [Abstract]
Derivative liability - long-term	$ 6,630	$ 0
Long Put [Member] \| Three-way Collar [Member] \| Not Designated as Hedging Instrument [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Derivative, floor \| $ / bbl	3.00
Short Call [Member] \| Three-way Collar [Member] \| Not Designated as Hedging Instrument [Member]
Oil and Gas Delivery Commitments and Contracts [Line Items]
Derivative, ceiling \| $ / bbl	3.90

-- None. No documentation exists for this element. --

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