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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 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 66 $ 81 $ 133 $ 162
Interest cost 437 396 874 793
Expected return on assets (764) (810) (1,528) (1,620)
Amortization of net actuarial loss 269 300 538 600
Amortization of prior service cost   2   4
Net pension expense/(credit) included in employee benefits and other expense $ 8 $ (31) $ 17 $ (61)