Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Commitments and Contingencies (Textual) [Abstract]
Natural gas processing and transportation agreement			5 years
Minimum delivery commitment to avoid paying gas deficiency fee			80.00%
Undiscounted minimum commitments	$ 6.9		$ 6.9
Transportation and processing fee under the agreement	1.5	2.0	4.3	3.8
Drilling Rig Commitments [Member]
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts	57.9		57.9
Outside Operated Drilling Commitments [Member]
Commitments and Contingencies (Textual) [Abstract]
Minimum outstanding commitments	$ 21.9		$ 21.9