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Employee Benefit Plans (Components of Net Periodic Pension Plan Cost) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Pension [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Service Cost $ 324 $ 278
Defined Benefit Plan, Interest Cost 1,586 1,650
Expected return on assets (3,240) (3,002)
Amortization of recognized loss 1,200 1,057
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) 9 12
Net pension credit included in employee benefits $ (121) $ (5)
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 4.25% 3.60%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 3.60% 4.10%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets 7.00% 7.00%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase 3.00% 3.00%
SERP [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Service Cost $ 112 $ 113
Defined Benefit Plan, Interest Cost 321 293
Expected return on assets 0 0
Amortization of recognized loss 159 146
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (3) (3)
Net pension credit included in employee benefits $ 589 $ 549
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 4.45% 4.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 0.00% 0.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets 0.00% 0.00%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase 3.00% 3.00%