Accumulated Other Comprehensive (Loss) Income (Effects of Reclassifications Out of AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on securities transactions, net	$ 235	$ 70
Amortization of prior service cost	5	5
Income tax expense	3,552	3,085
Unrealized Gain (Loss) on Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amount recognized	183	54
Defined Benefit Pension Plan [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amount recognized	(4)	(3)
Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amount recognized	179	51
Amount Reclassified from AOCI [Member] | Unrealized Gain (Loss) on Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on securities transactions, net	(235)	(70)
Income tax expense	(52)	(16)
Total amount recognized	183	54
Amount Reclassified from AOCI [Member] | Defined Benefit Pension Plan [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior service cost	5	5
Income tax expense	1	2
Total amount recognized	$ (4)	$ (3)