Commitments and Contingencies (Details) - USD ($) $ in Millions		3 Months Ended
	Oct. 01, 2015	Mar. 31, 2016	Mar. 31, 2015
Commitments and Contingencies (Textual) [Abstract]
Natural gas processing and transportation agreement	15 years	5 years
Minimum delivery commitment to avoid paying gas deficiency fee		80.00%
Undiscounted minimum commitments		$ 2.5
Transportation and processing fee under the agreement		0.9	$ 1.3
Drilling Rig Commitments
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts		43.2
Construction Contracts
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts		8.6
Payments made under contract		13.5
Outside Operated Drilling Commitments
Commitments and Contingencies (Textual) [Abstract]
Minimum outstanding commitments		4.7
Loving County System Agreement
Commitments and Contingencies (Textual) [Abstract]
Product Liability Contingency, Loss Exposure Not Accrued, Best Estimate		8.9
Transportation and processing fee under the agreement		$ 2.0
Term Of Old Contract Drilling Rig
Commitments and Contingencies (Textual) [Abstract]
Purchase Commitment, Description		one year