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Hedging Activities (Schedule Of Cash Flow Hedges) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
General Discussion of Derivative Instruments and Hedging Activities [Abstract]      
Reduction to oil and condensate sales $ 9,779 $ 1,517 $ 4,720