Changes to Accumulated Other Comprehensive Income (Loss), net - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024		Jun. 30, 2023
Beginning Balance	$ 180,906	$ 246,735	$ 185,989	[1]	$ 248,793
Change in net unrealized holding gains (losses) on securities available for sale, net of deferred tax expense (benefit)	3,131	(5,023)	573		(1,157)
Ending Balance	325,614	231,271	325,614		231,271
Net Unrealized (Losses) Gains on Available for Sale Securities [Member]
Beginning Balance	(48,039)	(41,659)	(45,481)		(45,525)
Change in net unrealized holding gains (losses) on securities available for sale, net of deferred tax expense (benefit)	3,079	(5,023)	521		(1,157)
Reclassification for previously unrealized net losses on securities available for sale, net of income tax benefit	52		52
Ending Balance	(44,908)	(46,682)	(44,908)		(46,682)
Transfer of Securities Held to Maturity to Available For Sale [Member]
Beginning Balance	425	425	425		425
Change in net unrealized holding gains (losses) on securities available for sale, net of deferred tax expense (benefit)	0	0	0		0
Reclassification for previously unrealized net losses on securities available for sale, net of income tax benefit	0		0
Ending Balance	425	425	425		425
Pension and Post-retirement Benefit Plans[Member]
Beginning Balance	0	(1)	0		(1)
Change in net unrealized holding gains (losses) on securities available for sale, net of deferred tax expense (benefit)	0	0	0		0
Reclassification for previously unrealized net losses on securities available for sale, net of income tax benefit	0		0
Ending Balance	0	(1)	0		(1)
Accumulated Other Comprehensive (Gain) Loss, net
Beginning Balance	(47,614)	(41,235)	(45,056)		(45,101)
Change in net unrealized holding gains (losses) on securities available for sale, net of deferred tax expense (benefit)	3,079	(5,023)	521		(1,157)
Reclassification for previously unrealized net losses on securities available for sale, net of income tax benefit	52		52
Ending Balance	$ (44,483)	$ (46,258)	$ (44,483)		$ (46,258)

[1] Derived from audited December 31, 2023 Consolidated Financial Statements.