Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	$ 887,301	$ 839,208
Other comprehensive income	5,624
Other comprehensive (loss) income		(4,094)
Reclassification adjustment recorded in earnings	446
Ending balance	903,472	843,669
Net Unrealized Losses on Available-for-Sale Investment Securities
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(35,117)	(34,321)
Other comprehensive income	5,583
Other comprehensive (loss) income		(2,293)
Ending balance	(29,534)	(36,614)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(2,422)	(4,566)
Other comprehensive income	1,397
Other comprehensive (loss) income		(1,917)
Reclassification adjustment recorded in earnings	446
Ending balance	(1,976)	(6,483)
Net Change Related to Defined Benefit Pension Plans
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(6,453)	(11,759)
Other comprehensive income	41
Other comprehensive (loss) income		116
Ending balance	(6,412)	(11,643)
Accumulated Other Comprehensive Loss
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(43,992)	(50,646)
Other comprehensive (loss) income	6,070	(4,094)
Ending balance	$ (37,922)	$ (54,740)