Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Balance	$ 137,078	$ 141,900	$ 129,189	$ 141,900	$ 131,047	$ 131,047
Balance	132,892	137,078	130,556	132,892	130,556	141,900
Pension [Member]
Other comprehensive income/(loss) before reclassifications	(5,069)		938
Accumulated Other Comprehensive Loss [Member]
Balance	(36,907)	(27,314)	(33,198)	(27,314)	(28,863)	(28,863)
Other comprehensive income/(loss) before reclassifications	(9,393)	(9,877)				409
Amounts reclassified from accumulated other comprehensive loss	384	284				1,140
Balance	(45,916)	(36,907)	(28,468)	(45,916)	(28,468)	(27,314)
Investment securities- with OTTI [Member]
Balance	(883)	(949)		(949)	(3,277)	(3,277)
Other comprehensive income/(loss) before reclassifications	(582)	103	1,581	(479)	1,847	2,475
Amounts reclassified from accumulated other comprehensive loss	(37)	(37)				(147)
Balance	(1,502)	(883)		(1,502)		(949)
Investment securities- all other [Member]
Other comprehensive income/(loss) before reclassifications	(3,924)		2,034	(11,867)	(3,168)
Investment securities- all other - excluding transfers [Member]
Balance	(7,594)	(5,749)		(5,749)	(25)	(25)
Other comprehensive income/(loss) before reclassifications	(3,924)	(1,843)				(5,611)
Amounts reclassified from accumulated other comprehensive loss		(2)				(113)
Balance	(11,518)	(7,594)		(11,518)		(5,749)
Investment Securities HTM [Member]
Balance	(6,165)	(134)		(134)	(315)	(315)
Other comprehensive income/(loss) before reclassifications		(6,100)
Amounts reclassified from accumulated other comprehensive loss	168	69				181
Balance	(5,997)	(6,165)		(5,997)		(134)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	295	(319)		(319)	(954)	(954)
Other comprehensive income/(loss) before reclassifications	182	614	$ (34)			635
Balance	477	295		477		(319)
Adjustment [Member] | Pension [Member]
Balance	(20,555)	(18,108)		(18,108)	(22,630)	(22,630)
Other comprehensive income/(loss) before reclassifications	(5,069)	(2,651)		(7,720)	799	3,431
Amounts reclassified from accumulated other comprehensive loss	204	204				1,091
Balance	(25,420)	(20,555)		(25,420)		(18,108)
Adjustment [Member] | SERP [Member]
Balance	(2,005)	(2,055)		(2,055)	(1,662)	(1,662)
Other comprehensive income/(loss) before reclassifications						(521)
Amounts reclassified from accumulated other comprehensive loss	49	50				128
Balance	$ (1,956)	$ (2,005)		$ (1,956)		$ (2,055)