Derivatives (Schedule Of Subsequent Non-designated Hedges) (Details) (Subsequent to December 31, 2014, Natural Gas, If Nymex)	2 Months Ended
	Feb. 24, 2015 MMBTU Unit
Apr'15 - Jun'15 | Swap
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	3.10
Hedged Volume (MMBtu/day)	30,000
Apr'15 - Jun'15 | Collar
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	30,000
Jul'15 - Sep'15 | Collar
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	30,000
Start | Apr'15 - Jun'15 | Swap
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Term	Apr'15
Start | Apr'15 - Jun'15 | Collar
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	2.92
Commodity Derivatives Term	Apr'15
Start | Jul'15 - Sep'15 | Collar
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	2.58
Commodity Derivatives Term	Jul'15
End | Apr'15 - Jun'15 | Swap
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Term	Jun'15
End | Apr'15 - Jun'15 | Collar
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	3.26
Commodity Derivatives Term	Jun'15
End | Jul'15 - Sep'15 | Collar
Derivative Instruments, Gain (Loss) [Line Items]
Non Designated Derivative Instrument Weighted Average Fixed Price For Swaps	3.04
Commodity Derivatives Term	Sep'15