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Employee Benefits (Classification Of Net Amounts Recognized For Postretirement Benefits) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Employee Benefits [Abstract]    
Current liability - postretirement benefits $ (425)us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities $ (334)us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
Non-current liability - postretirement benefits (6,223)us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent (5,786)us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Net amount recognized $ (6,648)us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet $ (6,120)us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet