Commodity Derivative Contracts (Details)	Mar. 31, 2015	May 05, 2015
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q2 | NYMEX
Derivative [Line Items]
Volume per Day	8,000
Weighted average swap price	90.00
Weighted average sold put price	65.75
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q2 | NYMEX | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	90.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q2 | NYMEX | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	90.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q2 | LLS
Derivative [Line Items]
Volume per Day	16,000
Weighted average swap price	93.65
Weighted average sold put price	68.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q2 | LLS | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	93.20
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q2 | LLS | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	94.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q3 | NYMEX
Derivative [Line Items]
Volume per Day	10,000
Weighted average swap price	90.02
Weighted average sold put price	65.30
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q3 | NYMEX | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	90.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q3 | NYMEX | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	90.10
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q3 | LLS
Derivative [Line Items]
Volume per Day	16,000
Weighted average swap price	93.65
Weighted average sold put price	68.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q3 | LLS | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	93.20
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q3 | LLS | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	94.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q4 | NYMEX
Derivative [Line Items]
Volume per Day	12,000
Weighted average swap price	92.42
Weighted average sold put price	68.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q4 | NYMEX | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	91.15
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q4 | NYMEX | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	94.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q4 | LLS
Derivative [Line Items]
Volume per Day	8,000
Weighted average swap price	94.94
Weighted average sold put price	68.00
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q4 | LLS | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	93.80
Enhanced Swaps | Crude Oil Contracts | Year 2015 | Q4 | LLS | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	96.50
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q1 | NYMEX
Derivative [Line Items]
Volume per Day	12,000
Weighted average swap price	92.43
Weighted average sold put price	68.00
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q1 | NYMEX | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	90.65
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q1 | NYMEX | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	93.35
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q1 | LLS
Derivative [Line Items]
Volume per Day	8,000
Weighted average swap price	94.81
Weighted average sold put price	68.50
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q1 | LLS | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	93.70
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q1 | LLS | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	95.45
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q2
Derivative [Line Items]
Volume per Day		15,000
Weighted average swap price		63
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q2 | NYMEX
Derivative [Line Items]
Volume per Day	2,000
Weighted average swap price	90.35
Weighted average sold put price	68.00
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q2 | NYMEX | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	90.35
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q2 | NYMEX | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	90.35
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q2 | LLS
Derivative [Line Items]
Volume per Day	6,000
Weighted average swap price	93.38
Weighted average sold put price	70.00
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q2 | LLS | Minimum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	93.30
Enhanced Swaps | Crude Oil Contracts | Year 2016 | Q2 | LLS | Maximum
Derivative [Line Items]
Derivative, Swap Type, Fixed Price	93.50
Collar | Crude Oil Contracts | Year 2015 | Q2 | NYMEX
Derivative [Line Items]
Volume per Day	30,000
Derivative, Floor Price	80.00
Derivative, Cap Price	95.25
Weighted average floor price	80.00
Weighted average ceiling price	94.72
Collar | Crude Oil Contracts | Year 2015 | Q2 | LLS
Derivative [Line Items]
Volume per Day	4,000
Derivative, Floor Price	85.00
Derivative, Cap Price	102.50
Weighted average floor price	85.00
Weighted average ceiling price	101.75
Collar | Crude Oil Contracts | Year 2015 | Q3 | NYMEX
Derivative [Line Items]
Volume per Day	28,000
Derivative, Floor Price	80.00
Derivative, Cap Price	95.25
Weighted average floor price	80.00
Weighted average ceiling price	95.05
Collar | Crude Oil Contracts | Year 2015 | Q3 | LLS
Derivative [Line Items]
Volume per Day	4,000
Derivative, Floor Price	85.00
Derivative, Cap Price	100.00
Weighted average floor price	85.00
Weighted average ceiling price	99.50
Collar | Crude Oil Contracts | Year 2016 | Q2
Derivative [Line Items]
Volume per Day		4,500
Collar | Crude Oil Contracts | Year 2016 | Q3
Derivative [Line Items]
Volume per Day		5,000
Collar | Natural Gas Contracts | Year 2015 | NYMEX
Derivative [Line Items]
Volume per Day	8,000
Derivative, Floor Price	4.00
Derivative, Cap Price	4.53
Weighted average floor price	4.00
Weighted average ceiling price	4.51
Three-way Collar | Crude Oil Contracts | Year 2015 | Q4 | NYMEX
Derivative [Line Items]
Volume per Day	10,000
Derivative, Floor Price	85.00
Derivative, Cap Price	102.00
Weighted average sold put price	68.00
Weighted average floor price	85.00
Weighted average ceiling price	99.00
Three-way Collar | Crude Oil Contracts | Year 2015 | Q4 | LLS
Derivative [Line Items]
Volume per Day	8,000
Derivative, Floor Price	88.00
Derivative, Cap Price	104.25
Weighted average sold put price	68.00
Weighted average floor price	88.00
Weighted average ceiling price	100.99
Three-way Collar | Crude Oil Contracts | Year 2016 | Q1 | NYMEX
Derivative [Line Items]
Volume per Day	10,000
Derivative, Floor Price	85.00
Derivative, Cap Price	101.25
Weighted average sold put price	68.00
Weighted average floor price	85.00
Weighted average ceiling price	99.85
Three-way Collar | Crude Oil Contracts | Year 2016 | Q1 | LLS
Derivative [Line Items]
Volume per Day	6,000
Derivative, Floor Price	88.00
Derivative, Cap Price	103.15
Weighted average sold put price	68.00
Weighted average floor price	88.00
Weighted average ceiling price	102.10
Three-way Collar | Crude Oil Contracts | Year 2016 | Q2 | NYMEX
Derivative [Line Items]
Volume per Day	2,000
Derivative, Floor Price	85.00
Derivative, Cap Price	95.50
Weighted average sold put price	68.00
Weighted average floor price	85.00
Weighted average ceiling price	95.50
Three-way Collar | Crude Oil Contracts | Year 2016 | Q2 | LLS
Derivative [Line Items]
Volume per Day	2,000
Derivative, Floor Price	88.00
Derivative, Cap Price	98.25
Weighted average sold put price	70.00
Weighted average floor price	88.00
Weighted average ceiling price	98.25