Consolidated Statement of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 48,799	$ 49,857	$ 40,827
Other Comprehensive (Loss) Income, Net of Tax:
Unrealized Net Securities Holding (Losses) Gains Arising During the Year	(48,227)	(6,413)	5,306
Reclassification Adjustment for Net Securities Losses Arising During the Year	0	0	28
Net Unrealized Gains on Cash Flow Hedge Agreements	2,582	929	485
Reclassification of Net Unrealized Loss (Gain) on Cash Flow Hedge Agreements to Interest Expense	152	(94)	0
Net Retirement Plan (Loss) Gain	(5,147)	6,500	(251)
Net Retirement Plan Prior Service Cost	0	0	(353)
Settlement Cost	428	0	0
Amortization of Net Retirement Plan Actuarial Loss	41	68	169
Amortization of Net Retirement Plan Prior Service Cost	169	173	157
Other Comprehensive (Loss) Income	(50,002)	1,163	5,541
Comprehensive (Loss) Income	$ (1,203)	$ 51,020	$ 46,368