Accumulated Other Comprehensive Income (Loss), Accumulated Other Comprehensive Income (Loss) Balances, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021		Mar. 31, 2021		Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	$ 592,895	$ 601,128	$ 571,031	[1]	$ 568,161	[1]	$ 601,128	$ 568,161	[1]
Other comprehensive income (loss) - before reclassifications	(6,829)		622				(21,080)	(3,839)
Amount reclassified from accumulated other comprehensive income	(224)		(50)				(489)	(257)
Other comprehensive (loss) gain , net of tax	(7,053)	(14,516)	572		(4,668)		(21,569)	(4,096)
Balance	594,632	592,895	578,593		571,031	[1]	594,632	578,593
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	(2,369)	12,147	7,268	[1]	11,936	[1]	12,147	11,936	[1]
Other comprehensive (loss) gain , net of tax	(7,053)	(14,516)	572		(4,668)
Balance	(9,422)	(2,369)	7,840		7,268	[1]	(9,422)	7,840
Net Unrealized Holding Loss on Securities Available for Sale, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	(14,277)	(26)	2,725		7,186		(26)	7,186
Other comprehensive income (loss) - before reclassifications	(6,829)		622				(21,080)	(3,839)
Amount reclassified from accumulated other comprehensive income	0		0				0	0
Other comprehensive (loss) gain , net of tax	(6,829)		622				(21,080)	(3,839)
Balance	(21,106)	(14,277)	3,347		2,725		(21,106)	3,347
Net Change in Overfunded Position in Pension and Postretirement Plans Arising During the Year, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	13,706	13,706	6,084		6,084		13,706	6,084
Other comprehensive income (loss) - before reclassifications	0		0				0	0
Amount reclassified from accumulated other comprehensive income	0		0				0	0
Other comprehensive (loss) gain , net of tax	0		0				0	0
Balance	13,706	13,706	6,084		6,084		13,706	6,084
Net Change in Net Actuarial Gain and Prior Service Credit on Pension and Postretirement Benefit Plans, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	(1,798)	(1,533)	(1,541)		(1,334)		(1,533)	(1,334)
Other comprehensive income (loss) - before reclassifications	0		0				0	0
Amount reclassified from accumulated other comprehensive income	(224)		(50)				(489)	(257)
Other comprehensive (loss) gain , net of tax	(224)		(50)				(489)	(257)
Balance	$ (2,022)	$ (1,798)	$ (1,591)		$ (1,541)		$ (2,022)	$ (1,591)

[1] All periods presented have been adjusted for the 1 for 5 reverse stock split which occurred on May 28, 2021.