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Employee Benefit Plans (Net Periodic Pension Cost) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]      
Service cost $ 240 $ 271 $ 253
Interest cost on projected benefit obligation 3,394 3,465 3,315
Expected return on plan assets (5,697) (2,297) (5,491)
Amortization of loss 3,233 (2,048) 3,059
Settlement expense 0 0 1,443
Net periodic pension (income) cost $ 1,170 $ (609) $ 2,579