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Employee Benefit Plans (Schedule of Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Asset) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Employee Benefit Plans [Abstract]    
Projected benefit obligation $ 77,484 $ 85,516
Accumulated benefit obligation 77,484 85,516
Fair value of plan assets $ 77,993 $ 65,890