Accumulated Other Comprehensive Loss (Components of Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Net unrealized gains (losses), before tax	$ (1,816)		$ (1,522)		$ (316)	$ (1,429)
Income tax (credit)/expense related to other comprehensive income	478		369		83	345
Other comprehensive income/(loss), net of tax	(1,338)	$ 1,105	(1,153)	$ 69	(233)	(1,084)
Accretable Yield in Income [Member]
Unrealized holding (losses)/gains on investments	(843)
Unrealized tax (expense) benefit	223
Unrealized net gains (losses), net of tax	(620)
Accumulated Other Comprehensive Loss [Member]
Unrealized net gains (losses), net of tax	(1,595)	846	(1,435)	(210)
Recognized gains (losses), net of tax	(257)	(259)	(282)	(279)
Other comprehensive income/(loss), net of tax	(1,338)	1,105	(1,153)	69
Investment securities- with OTTI [Member]
Unrealized holding (losses)/gains on investments	(843)		198		(633)	(1,408)
Recognized gains (losses), before tax	51		51		101	101
Net unrealized gains (losses), before tax	(894)		147		(734)	(1,509)
Unrealized tax (expense) benefit			(87)		168	339
Income tax (credit)/expense related to other comprehensive income	234		(76)		192	363
Unrealized net gains (losses), net of tax	(620)	155	111	(1,180)	(465)	(1,069)
Recognized gains (losses), net of tax	40	37	40	37
Other comprehensive income/(loss), net of tax	(660)		71		(542)	(1,146)
Investment securities- with OTTI [Member] | Accretable Yield in Income [Member]
Recognized gains (losses), before tax	51				101
Recognized tax (expense) benefit	(11)				(24)
Recognized gains (losses), net of tax	40				77
Investment securities- with OTTI [Member] | Amortization of Recognized Income [Member]
Recognized gains (losses), before tax			51			101
Recognized tax (expense) benefit			(11)			(24)
Recognized gains (losses), net of tax			40			77
Investment securities- all other [Member]
Unrealized holding (losses)/gains on investments	(717)		(2,221)		(1,341)	(881)
Net unrealized gains (losses), before tax	(717)		(2,221)		(1,341)	(881)
Unrealized tax (expense) benefit	189					212
Income tax (credit)/expense related to other comprehensive income			567		354
Unrealized net gains (losses), net of tax	(528)					(669)
Other comprehensive income/(loss), net of tax			(1,654)		(987)
Investment Securities HTM [Member]
Recognized gains (losses), before tax	(160)		(164)		(320)	(345)
Net unrealized gains (losses), before tax	160		164		320	345
Income tax (credit)/expense related to other comprehensive income	(42)		(35)		(84)	(83)
Recognized gains (losses), net of tax	(118)	(118)	(129)	(133)
Other comprehensive income/(loss), net of tax	118		129		236	262
Investment Securities HTM [Member] | Amortization of Recognized Income [Member]
Recognized gains (losses), before tax	(160)		(164)		(320)	(345)
Recognized tax (expense) benefit	42		35		84	83
Recognized gains (losses), net of tax	(118)		(129)		(236)	(262)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Unrealized holding (losses)/gains on investments			204
Net unrealized gains (losses), before tax	(69)				4	16
Unrealized tax (expense) benefit	18		(54)
Income tax (credit)/expense related to other comprehensive income					(1)	(4)
Unrealized net gains (losses), net of tax	(51)	54	150	(138)
Other comprehensive income/(loss), net of tax					3	12
Adjustment [Member]
Unrealized holding (losses)/gains on investments	(538)		(63)		951	105
Recognized gains (losses), before tax	(203)		(249)		(406)	(499)
Net unrealized gains (losses), before tax	(335)		186		1,357	604
Adjustment [Member] | Pension [Member]
Unrealized holding (losses)/gains on investments	(538)		(63)		951	105
Net unrealized gains (losses), before tax	(335)		186		1,357	604
Unrealized tax (expense) benefit	142		21		(251)	(24)
Income tax (credit)/expense related to other comprehensive income	89		(33)		(358)	(144)
Unrealized net gains (losses), net of tax	(396)	1,096	(42)	123	700	81
Recognized gains (losses), net of tax	(150)	(149)	(195)	(184)
Other comprehensive income/(loss), net of tax	(246)		153		999	460
Adjustment [Member] | SERP [Member]
Net unrealized gains (losses), before tax	39		(2)		78	(4)
Income tax (credit)/expense related to other comprehensive income	(10)				(20)	1
Recognized gains (losses), net of tax	(29)	$ (29)	2	$ 1
Other comprehensive income/(loss), net of tax	29		(2)		58	(3)
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | Pension [Member]
Recognized gains (losses), before tax	(203)		(249)		(406)	(499)
Recognized tax (expense) benefit	53		54		107	120
Recognized gains (losses), net of tax	(150)		(195)		(299)	(379)
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | SERP [Member]
Recognized gains (losses), before tax			2		(78)
Recognized tax (expense) benefit					20
Recognized gains (losses), net of tax			$ 2		$ (58)
Adjustment [Member] | Amortization of Unrecognized Gain [Member] | SERP [Member]
Recognized gains (losses), before tax						4
Recognized tax (expense) benefit						(1)
Recognized gains (losses), net of tax						$ 3
Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Loss [Member] | SERP [Member]
Recognized gains (losses), before tax	(39)
Recognized tax (expense) benefit	10
Recognized gains (losses), net of tax	$ (29)