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Pension Plans And Other Postretirement Benefit Plans (Narrative) (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]      
Pension Contributions $ 8,000 $ 21,500 $ 32,000
Pension Plans, Defined Benefit [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year $ (12,000)