Employee Benefit Plans (Components of Net Periodic Pension Plan Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	$ 56	$ 66	$ 112	$ 133
Interest Cost	406	437	813	874
Expected return on assets	(887)	(764)	(1,774)	(1,528)
Amortization of net actuarial/recognized loss	358	269	716	538
Net pension (credit)/expense included in employee benefits	(67)	8	(133)	17
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	31	23	62	47
Interest Cost	67	83	134	165
Amortization of net actuarial/recognized loss	47	29	94	58
Amortization of prior service cost			(1)	(1)
Net pension (credit)/expense included in employee benefits	$ 145	$ 135	$ 289	$ 269