Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Balance	$ 151,793	$ 141,900	$ 141,900
Balance	152,868	137,078	151,793
Investment securities- with OTTI [Member]
Balance	(1,711)	(949)	(949)
Other comprehensive income/(loss) before reclassifications	(1,180)	103	(614)
Amounts reclassified from accumulated other comprehensive loss	(37)		(148)
Balance	(2,928)		(1,711)
Investment securities- all other [Member]
Other comprehensive income/(loss) before reclassifications	985	(7,943)
Investment securities- all other - excluding transfers [Member]
Balance	(16,380)	(5,749)	(5,749)
Other comprehensive income/(loss) before reclassifications	985		(10,629)
Amounts reclassified from accumulated other comprehensive loss			(2)
Balance	(15,395)		(16,380)
Investment Securities HTM [Member]
Balance	(5,703)	(134)	(134)
Other comprehensive income/(loss) before reclassifications		(6,100)	(6,120)
Amounts reclassified from accumulated other comprehensive loss	133		551
Balance	(5,570)		(5,703)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	797	(319)	(319)
Other comprehensive income/(loss) before reclassifications	(138)		1,116
Balance	659		797
Adjustment [Member] | Pension [Member]
Balance	(16,603)	(18,108)	(18,108)
Other comprehensive income/(loss) before reclassifications	123	(2,651)	684
Amounts reclassified from accumulated other comprehensive loss	184		821
Balance	(16,296)		(16,603)
Adjustment [Member] | SERP [Member]
Balance	574	(2,055)	(2,055)
Other comprehensive income/(loss) before reclassifications			2,430
Amounts reclassified from accumulated other comprehensive loss	(1)		199
Balance	573		574
Accumulated Other Comprehensive Loss [Member]
Balance	(39,026)	(27,314)	(27,314)
Other comprehensive income/(loss) before reclassifications	(210)		(13,133)
Amounts reclassified from accumulated other comprehensive loss	279		1,421
Balance	$ (38,957)	$ (36,907)	$ (39,026)