Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Balance	$ 132,892	$ 137,078	$ 141,900	$ 130,556	$ 141,900	$ 131,047	$ 131,047
Balance	132,044	132,892	137,078	133,787	132,044	133,787	141,900
Pension [Member]
Other comprehensive income/(loss) before reclassifications	(2,592)			(697)
Accumulated Other Comprehensive Loss [Member]
Balance	(45,916)	(36,907)	(27,314)	(28,468)	(27,314)	(28,863)	(28,863)
Other comprehensive income/(loss) before reclassifications	(7,303)	(9,393)	(9,877)				409
Amounts reclassified from accumulated other comprehensive loss	385	384	284				1,140
Balance	(52,834)	(45,916)	(36,907)	(28,732)	(52,834)	(28,732)	(27,314)
Investment securities- with OTTI [Member]
Balance	(1,502)	(883)	(949)		(949)	(3,277)	(3,277)
Other comprehensive income/(loss) before reclassifications	(146)	(582)	103	550	(625)	2,397	2,475
Amounts reclassified from accumulated other comprehensive loss	(37)	(37)	(37)				(147)
Balance	(1,685)	(1,502)	(883)		(1,685)		(949)
Investment securities- all other [Member]
Other comprehensive income/(loss) before reclassifications	(4,957)			(518)	(16,824)	(3,686)
Investment securities- all other - excluding transfers [Member]
Balance	(11,518)	(7,594)	(5,749)		(5,749)	(25)	(25)
Other comprehensive income/(loss) before reclassifications	(4,957)	(3,924)	(1,843)				(5,611)
Amounts reclassified from accumulated other comprehensive loss			(2)				(113)
Balance	(16,475)	(11,518)	(7,594)		(16,475)		(5,749)
Investment Securities HTM [Member]
Balance	(5,997)	(6,165)	(134)		(134)	(315)	(315)
Other comprehensive income/(loss) before reclassifications			(6,100)
Amounts reclassified from accumulated other comprehensive loss	167	168	69				181
Balance	(5,830)	(5,997)	(6,165)		(5,830)		(134)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	477	295	(319)		(319)	(954)	(954)
Other comprehensive income/(loss) before reclassifications	392	182	614	$ 79			635
Balance	869	477	295		869		(319)
Adjustment [Member] | Pension [Member]
Balance	(25,420)	(20,555)	(18,108)		(18,108)	(22,630)	(22,630)
Other comprehensive income/(loss) before reclassifications	(2,592)	(5,069)	(2,651)		(10,312)	102	3,431
Amounts reclassified from accumulated other comprehensive loss	205	204	204				1,091
Balance	(27,807)	(25,420)	(20,555)		(27,807)		(18,108)
Adjustment [Member] | SERP [Member]
Balance	(1,956)	(2,005)	(2,055)		(2,055)	(1,662)	(1,662)
Other comprehensive income/(loss) before reclassifications							(521)
Amounts reclassified from accumulated other comprehensive loss	50	49	50				128
Balance	$ (1,906)	$ (1,956)	$ (2,005)		$ (1,906)		$ (2,055)