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Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Balance	$ 141,900	$ 131,047	$ 131,047
Balance	137,078	129,189	141,900
Accumulated Other Comprehensive Loss [Member]
Balance	(27,314)	(28,863)	(28,863)
Other comprehensive income/(loss) before reclassifications	(9,877)		409
Amounts reclassified from accumulated other comprehensive loss	284		1,140
Balance	(36,907)	(33,198)	(27,314)
Investment securities- with OTTI [Member]
Balance	(949)	(3,277)	(3,277)
Other comprehensive income/(loss) before reclassifications	103	266	2,475
Amounts reclassified from accumulated other comprehensive loss	(37)		(147)
Balance	(883)		(949)
Investment securities- all other [Member]
Other comprehensive income/(loss) before reclassifications	(7,943)	(5,202)
Investment securities- all other - excluding transfers [Member]
Balance	(5,749)	(25)	(25)
Other comprehensive income/(loss) before reclassifications	(1,843)		(5,611)
Amounts reclassified from accumulated other comprehensive loss	(2)		(113)
Balance	(7,594)		(5,749)
Investment Securities HTM [Member]
Balance	(134)	(315)	(315)
Other comprehensive income/(loss) before reclassifications	(6,100)
Amounts reclassified from accumulated other comprehensive loss	69		181
Balance	(6,165)		(134)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	(319)	(954)	(954)
Other comprehensive income/(loss) before reclassifications	614		635
Balance	295		(319)
Pension Plan [Member] | Pension [Member]
Balance	(18,108)	(22,630)	(22,630)
Other comprehensive income/(loss) before reclassifications	(2,651)	(139)	3,431
Amounts reclassified from accumulated other comprehensive loss	204		1,091
Balance	(20,555)		(18,108)
Pension Plan [Member] | SERP [Member]
Balance	(2,055)	$ (1,662)	(1,662)
Other comprehensive income/(loss) before reclassifications			(521)
Amounts reclassified from accumulated other comprehensive loss	50		128
Balance	$ (2,005)		$ (2,055)

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