Derivatives Derivatives (Schedule of Non-designated Hedges Outstanding) (Details)	12 Months Ended
	Dec. 31, 2014 MMBTU Unit
Natural Gas | Swap | If Nymex | Jan'15 - Dec'15
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	3.98
Hedged Volume (MMBtu/day)	40,000
Natural Gas | Collar | If Nymex | Jan'15 - Mar'15
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	30,000
Crude Oil | Swap | Wti Nymex | Jan'15 - Dec'15
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	95.00
Hedged Volume (Bbl/day)	1,000
Minimum | Natural Gas | Swap | If Nymex | Jan'15 - Dec'15
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'15
Minimum | Natural Gas | Collar | If Nymex | Jan'15 - Mar'15
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	4.20
Commodity Derivatives Description Terms	Jan'15
Minimum | Crude Oil | Swap | Wti Nymex | Jan'15 - Dec'15
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'15
Maximum | Natural Gas | Swap | If Nymex | Jan'15 - Dec'15
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'15
Maximum | Natural Gas | Collar | If Nymex | Jan'15 - Mar'15
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	5.03
Commodity Derivatives Description Terms	Mar'15
Maximum | Crude Oil | Swap | Wti Nymex | Jan'15 - Dec'15
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'15