Basis of Presentation (Details Textuals) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2016 USD ($) $ / MMBTU $ / Barrel	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Sep. 30, 2015 USD ($) $ / MMBTU $ / Barrel	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Accounting Policies [Abstract]
Write-down of oil and natural gas properties | $	$ 75,521	$ 479,400	$ 256,000	$ 1,760,600	$ 1,700,000	$ 146,200	$ 810,921	$ 3,612,600
Oil
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Oil and Natural Gas Prices | $ / Barrel	41.68			59.21
Natural Gas
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Oil and Natural Gas Prices | $ / MMBTU	2.36			3.04