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Employee Benefit Plans (Reconciliation of Change in Benefit Obligation) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2014
USD ($)
Employee Benefit Plans [Abstract]  
Benefit obligation at beginning of year $ 77,484
Service cost
Interest cost $ 3,595
Actuarial (gain) loss 5,855
Benefits paid $ (3,301)
Settlement of obligations
Benefit obligation at end of year