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Employee Benefit Plans (Components of the Net Periodic Pension Plan Cost) (Pension) (Details) - Pension [Member] - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 66 $ 81 $ 199 $ 243
Interest cost 437 397 1,311 1,190
Expected return on assets (764) (810) (2,292) (2,430)
Amortization of net actuarial loss 269 300 807 900
Amortization of prior service cost   2   6
Net pension expense/(credit) included in employee benefits and other expense $ 8 $ (30) $ 25 $ (91)