Commitments and Contingencies (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Oct. 01, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 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		$ 1.6		$ 1.6
Transportation and processing fee under the agreement		0.7	$ 1.6	2.4	$ 4.3
Drilling Rig Commitments
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts		43.0		43.0
Construction Contracts
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts		4.2		4.2
Payments made under contract		1.4		19.2
Outside Operated Drilling Commitments
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts		11.2		11.2
Loving County System Agreement
Commitments and Contingencies (Textual) [Abstract]
Deficiency fee required to be paid				12.0
Transportation and processing fee under the agreement		$ 2.4		$ 7.1
Term Of Old Contract Drilling Rig
Commitments and Contingencies (Textual) [Abstract]
Purchase Commitment, Description				1 year