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Employee Benefit Plans (Components of Net Periodic Pension Plan Cost) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Pension [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Service Cost $ 305 $ 316
Defined Benefit Plan, Interest Cost 1,740 1,579
Expected return on assets (2,796) (2,965)
Defined Benefit Plan, Amortization of Transition Obligations (Assets) 0 (19)
Amortization of recognized loss 848 781
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) 12 12
Net pension credit included in employee benefits $ 109 $ (296)
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 4.10% 4.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 4.50% 4.00%
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 $ 100 $ 121
Defined Benefit Plan, Interest Cost 279 239
Expected return on assets 0 0
Defined Benefit Plan, Amortization of Transition Obligations (Assets) 0 0
Amortization of recognized loss 73 49
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) 20 20
Net pension credit included in employee benefits $ 472 $ 429
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 4.00% 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%