Derivative Commodity - Reclassification (Details) - Jun. 30, 2015	Mcf bbl $ / Mcf $ / bbl
Production Period, Year One | NYMEX Swaps | Crude Oil
Derivatives, Fair Value [Line Items]
Total Hedged Volumes	7,040,000
Average Contract Price | $ / bbl	78.24
Production Period, Year One | WTS/WTI Basis Swaps | Crude Oil
Derivatives, Fair Value [Line Items]
Total Hedged Volumes	1,080,000
Average Contract Price | $ / bbl	(4.30)
Production Period, Year One | WTI/WTI Basis Swaps | Crude Oil
Derivatives, Fair Value [Line Items]
Total Hedged Volumes	3,780,000
Average Contract Price | $ / bbl	(4.55)
Production Period, Year One | Basin Specific Swaps, San Juan | Natural Gas
Derivatives, Fair Value [Line Items]
Total Hedged Volumes | Mcf	10,800,000.0
Average contract price (dollars per Mcf) | $ / Mcf	4.14
Production Period, Year One | Basin Specific Swaps - Permain | Natural Gas
Derivatives, Fair Value [Line Items]
Total Hedged Volumes | Mcf	3,000,000
Average contract price (dollars per Mcf) | $ / Mcf	4.20
Production Period, Year Two | NYMEX Swaps | Crude Oil
Derivatives, Fair Value [Line Items]
Total Hedged Volumes	1,086,000
Average Contract Price | $ / bbl	63.80
Production Period, Year Two | WTS/WTI Basis Swaps | Crude Oil
Derivatives, Fair Value [Line Items]
Total Hedged Volumes	2,117,000
Average Contract Price | $ / bbl	(1.63)
Production Period, Year Two | WTI/WTI Basis Swaps | Crude Oil
Derivatives, Fair Value [Line Items]
Total Hedged Volumes	7,524,000
Average Contract Price | $ / bbl	(1.92)