Annual report pursuant to Section 13 and 15(d)

Hedging Activities (Schedule Of Derivative Instruments In Statement Of Financial Position) (Details)

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Hedging Activities (Schedule Of Derivative Instruments In Statement Of Financial Position) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
General Discussion of Derivative Instruments and Hedging Activities [Abstract]    
Short-term derivative instruments $ 324 $ 664
Long-term derivative instruments - asset 521 0
Short-term derivative instruments - liabilities 12,280 10,442
Long-term derivative instruments - liability $ 11,366 $ 0