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Employee Benefit Plans (Schedule of Reconciliation of Benefit Obligation) (Details) - Pension Plan [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Change in benefit obligation      
Benefit obligation at beginning of year $ 35,615 $ 30,548 $ 32,272
Service cost
Interest cost $ 1,364 $ 1,461 $ 1,284
Actuarial (gain) loss 1,236 5,320 (2,343)
Benefits paid $ (2,051) $ (1,714) $ (665)
Curtailment gain
Benefit obligation at end of year $ 36,164 $ 35,615 $ 30,548
Change in plan assets      
Plan assets at beginning of year 37,282 36,333 30,124
Actual return on plan assets $ 258 $ 2,663 $ 6,874
Employer contributions
Benefits paid - plan $ (2,051) $ (1,714) $ (665)
Plan assets at end of year 35,489 37,282 36,333
Funded status at end of year $ (675) $ 1,667 $ 5,785