Accumulated Other Comprehensive Loss (Reclassification out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income on taxable investment securities	$ 1,779		$ 1,540		$ 3,547	$ 2,946
Provision for income tax expense	(1,423)		(1,708)		(2,778)	(3,609)
Net income	4,414	$ 4,375	5,428	$ 5,715	8,789	11,143
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(282)		(384)		(561)	(668)
OTTI | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income tax expense	(11)		(14)		(24)	(27)
Net income	40		37		77	74
OTTI | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Accretable Yield in Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income on taxable investment securities	51		51		101	101
Investment securities- all other [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income tax expense						(1)
Net income						2
Investment securities- all other [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Recognition of Gains (Losses) In Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net gains						3
Investment Securities HTM [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income tax expense	35		62		83	87
Net income	(129)		(168)		(262)	(237)
Investment Securities HTM [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income on taxable investment securities	(164)		(230)		(345)	(324)
Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Pension [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income tax expense	54		75		120	150
Net income	(195)		(204)		(379)	(408)
Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | SERP [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income tax expense			18		(1)	36
Net income	2		(49)		3	(99)
Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Loss [Member] | Pension [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense					(499)	(558)
Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Loss [Member] | SERP [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense	2		(67)		$ 4	$ (135)
Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Loss [Member] | Pension [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense	$ (249)		$ (279)