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Employee Benefit Plans (Plans With Accumulated Benefit Obligations In Excess Of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Plans with accumulated benefit obligations in excess of plan assets: |  |
Projected benefit obligation | $ 15,067 | $ 16,492
Accumulated benefit obligation | 12,396 | 15,496
Fair value of plan assets | 11,702 | 14,703
Plans with plan assets in excess of accumulated benefit obligations: |  |
Projected benefit obligation | 22,484 | 12,739
Accumulated benefit obligation | 20,640 | 10,687
Fair value of plan assets | $ 20,856 | $ 11,406

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