Employee Benefit Plans (Components of Net Periodic Pension Plan Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	$ 56	$ 67
Defined Benefit Plan, Interest Cost	407	437
Expected return on assets	(887)	(764)
Amortization of net actuarial/recognized loss	358	269
Net pension credit included in employee benefits	(66)	9
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	31	24
Defined Benefit Plan, Interest Cost	67	82
Amortization of net actuarial/recognized loss	47	29
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(1)	(1)
Net pension credit included in employee benefits	$ 144	$ 134