Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Balance	$ 164,177	$ 165,481	$ 161,873	$ 155,156	$ 152,868	$ 151,793	$ 161,873	$ 151,793
Balance	173,979	164,177	165,481	154,990	155,156	152,868	173,979	154,990
Investment securities- with OTTI [Member]
Balance	(3,024)	(2,364)	(2,482)	(2,857)	(2,928)	(1,711)	(2,482)	(1,711)
Other comprehensive income/(loss) before reclassifications	544	(620)	155	475	111	(1,180)	79	(594)
Amounts reclassified from accumulated other comprehensive loss	(38)	(40)	(37)	(38)	(40)	(37)
Balance	(2,518)	(3,024)	(2,364)	(2,420)	(2,857)	(2,928)	(2,518)	(2,420)
Investment securities- all other [Member]
Other comprehensive income/(loss) before reclassifications	2,491			(3,201)				(3,870)
Investment securities- all other - excluding transfers [Member]
Balance	(14,204)	(13,676)	(13,217)	(17,049)	(15,395)	(16,380)	(13,217)	(16,380)
Other comprehensive income/(loss) before reclassifications	2,491	(528)	(459)	(3,201)	(1,654)	985
Balance	(11,713)	(14,204)	(13,676)	(20,250)	(17,049)	(15,395)	(11,713)	(20,250)
Investment Securities HTM [Member]
Balance	(4,965)	(5,083)	(5,201)	(5,441)	(5,570)	(5,703)	(5,201)	(5,703)
Amounts reclassified from accumulated other comprehensive loss	134	118	118	130	129	133
Balance	(4,831)	(4,965)	(5,083)	(5,311)	(5,441)	(5,570)	(4,831)	(5,311)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	572	623	569	809	659	797	569	797
Other comprehensive income/(loss) before reclassifications	(238)	(51)	54	11	150	(138)
Balance	334	572	623	820	809	659	334	820
Net Pension Plan | Pension
Balance	(13,264)	(13,018)	(14,263)	(16,143)	(16,296)	(16,603)	(14,263)	(16,603)
Other comprehensive income/(loss) before reclassifications	2,377	(396)	1,096	(1,033)	(42)	123	3,077	(952)
Amounts reclassified from accumulated other comprehensive loss	148	150	149	194	195	184
Balance	(10,739)	(13,264)	(13,018)	(16,982)	(16,143)	(16,296)	(10,739)	(16,982)
Net Pension Plan | SERP
Balance	(1,175)	(1,204)	(1,233)	571	573	574	(1,233)	574
Amounts reclassified from accumulated other comprehensive loss	29	29	29	(1)	(2)	(1)
Balance	(1,146)	(1,175)	(1,204)	570	571	573	(1,146)	570
Accumulated Other Comprehensive Loss
Balance	(36,060)	(34,722)	(35,827)	(40,110)	(38,957)	(39,026)	(35,827)	(39,026)
Other comprehensive income/(loss) before reclassifications	5,174	(1,595)	846	(3,748)	(1,435)	(210)
Amounts reclassified from accumulated other comprehensive loss	273	257	259	285	282	279
Balance	$ (30,613)	$ (36,060)	$ (34,722)	$ (43,573)	$ (40,110)	$ (38,957)	$ (30,613)	$ (43,573)