Derivatives Derivatives (Schedule of Non-designated Hedges Outstanding) (Details) (Not Designated as Hedging Instrument [Member])	12 Months Ended
	Dec. 31, 2013 MMBTU Unit
Natural Gas [Member] | Swap [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	80,000
Weighted Average Fixed Price for Swaps	4.24
Natural Gas [Member] | Collar [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	10,000
Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Jun'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (Bbl/day)	500
Weighted Average Fixed Price for Swaps	100.03
Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (Bbl/day)	3,000
Weighted Average Fixed Price for Swaps	91.77
Crude Oil [Member] | Collar [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (Bbl/day)	4,000
Minimum [Member] | Natural Gas [Member] | Swap [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Minimum [Member] | Natural Gas [Member] | Collar [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Weighted Average Fixed Price for Swaps	3.75
Minimum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Jun'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Minimum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Minimum [Member] | Crude Oil [Member] | Collar [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Weighted Average Fixed Price for Swaps	90.00
Maximum [Member] | Natural Gas [Member] | Swap [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Maximum [Member] | Natural Gas [Member] | Collar [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Weighted Average Fixed Price for Swaps	4.37
Maximum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Jun'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jun'14
Maximum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Maximum [Member] | Crude Oil [Member] | Collar [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Weighted Average Fixed Price for Swaps	96.08