Accumulated Other Comprehensive Loss (Components of Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Net unrealized gains (losses), before tax	$ (1,522)		$ (12,302)		$ (1,429)	$ (25,398)
Income tax benefit/(expense) related to other comprehensive income	369		3,293		345	6,796
Other comprehensive (loss)/income, net of tax	(1,153)	$ 69	(9,009)	$ (9,593)	(1,084)	(18,602)
Accumulated Other Comprehensive Loss [Member]
Unrealized net gains (losses), net of tax	(1,435)	(210)					$ (13,133)
Recognized gains (losses), net of tax	(282)	(279)					(1,421)
Other comprehensive (loss)/income, net of tax	(1,153)	69	(9,009)	$ (9,593)
Investment securities- with OTTI [Member]
Unrealized holding (losses)/gains on investments	198		(795)		(1,408)	(654)
Recognized gains (losses), before tax	51		51		101	101
Net unrealized gains (losses), before tax	147		(846)		(1,509)	(755)
Unrealized tax (expense) benefit	(87)		213		339	175
Income tax benefit/(expense) related to other comprehensive income	(76)		227		363	202
Unrealized net gains (losses), net of tax	111	(1,180)	(582)		(1,069)	(479)	(614)
Recognized gains (losses), net of tax	40	37					148
Other comprehensive (loss)/income, net of tax	71		(619)		(1,146)	(553)
Investment securities- with OTTI [Member] | Accretable Yield in Income [Member]
Recognized gains (losses), before tax	51		51		101	101
Recognized tax (expense) benefit	(11)		(14)		(24)	(27)
Recognized gains (losses), net of tax	40		37		77	74
Investment securities- all other [Member]
Unrealized holding (losses)/gains on investments			(5,359)		(881)	(16,203)
Recognized gains (losses), before tax	(2,221)		(5,359)			3
Net unrealized gains (losses), before tax	(2,221)		(5,359)		(881)	(7,878)
Unrealized tax (expense) benefit			1,435			4,336
Income tax benefit/(expense) related to other comprehensive income	567		1,435		212	2,109
Unrealized net gains (losses), net of tax			(3,924)			(11,867)
Other comprehensive (loss)/income, net of tax	(1,654)		(3,924)		(669)	(5,769)
Investment securities- all other [Member] | Recognition of Gains (Losses) In Income [Member]
Recognized gains (losses), before tax						3
Recognized tax (expense) benefit						(1)
Recognized gains (losses), net of tax						2
Investment Securities HTM [Member]
Unrealized holding (losses)/gains on investments						(8,328)
Recognized gains (losses), before tax	(164)		(230)		(345)	(324)
Net unrealized gains (losses), before tax	164		230		345	(8,004)
Unrealized tax (expense) benefit						2,228
Income tax benefit/(expense) related to other comprehensive income	(35)		(62)		(83)	2,141
Unrealized net gains (losses), net of tax						(6,100)	(6,120)
Recognized gains (losses), net of tax	(129)	(133)					(551)
Other comprehensive (loss)/income, net of tax	129		168		262	(5,863)
Investment Securities HTM [Member] | Amortization of Recognized Income [Member]
Recognized gains (losses), before tax	(164)		(230)		(345)	(324)
Recognized tax (expense) benefit	35		62		83	87
Recognized gains (losses), net of tax	(129)		(168)		(262)	(237)
Investment Securities Transferred From AFS to HTM
Unrealized holding (losses)/gains on investments						8,328
Unrealized tax (expense) benefit						(2,228)
Unrealized net gains (losses), net of tax						6,100
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Net unrealized gains (losses), before tax	204		249		16	1,088
Unrealized tax (expense) benefit	(100)
Income tax benefit/(expense) related to other comprehensive income	(54)		(67)		(4)	(292)
Unrealized net gains (losses), net of tax	150	(138)					1,116
Other comprehensive (loss)/income, net of tax	150		182		12	796
Adjustment [Member]
Unrealized holding (losses)/gains on investments	(63)		(6,922)		105	(10,542)
Recognized gains (losses), before tax	(249)		(279)		(499)	(558)
Net unrealized gains (losses), before tax	186		(6,643)		604	(9,984)
Adjustment [Member] | Pension [Member]
Unrealized holding (losses)/gains on investments	(63)		(6,922)		105	(10,542)
Net unrealized gains (losses), before tax	186		(6,643)		604	(9,984)
Unrealized tax (expense) benefit	21		1,853		(24)	2,822
Income tax benefit/(expense) related to other comprehensive income	(33)		1,778		(144)	2,672
Unrealized net gains (losses), net of tax	(42)	123	(5,069)		81	(7,720)	684
Recognized gains (losses), net of tax	(195)	(184)					(821)
Other comprehensive (loss)/income, net of tax	153		(4,865)		460	(7,312)
Adjustment [Member] | SERP [Member]
Net unrealized gains (losses), before tax	(2)		67		(4)	135
Income tax benefit/(expense) related to other comprehensive income			(18)		1	(36)
Unrealized net gains (losses), net of tax							2,430
Recognized gains (losses), net of tax	2	$ 1					$ (199)
Other comprehensive (loss)/income, net of tax	(2)		49		(3)	99
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | Pension [Member]
Recognized gains (losses), before tax	(249)		(279)		(499)	(558)
Recognized tax (expense) benefit	54		75		120	150
Recognized gains (losses), net of tax	(195)		(204)		(379)	(408)
Adjustment [Member] | Amortization of Unrecognized Loss [Member] | SERP [Member]
Recognized gains (losses), before tax	2		(67)		4	(135)
Recognized tax (expense) benefit			18		(1)	36
Recognized gains (losses), net of tax	$ 2		$ (49)		$ 3	$ (99)