Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	$ (50,646)
Other comprehensive (loss) income	(4,094)	$ 6,554
Ending balance	(54,740)
Net Unrealized Losses on Available-for-Sale Investment Securities
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(34,321)	(40,066)
Other comprehensive (loss) income	(2,293)	4,491
Ending balance	(36,614)	(35,575)
Net Change Related to Derivatives Used for Cash Flow Hedges
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(4,566)	(6,831)
Other comprehensive (loss) income	(1,917)	1,869
Ending balance	(6,483)	(4,962)
Net Change Related to Defined Benefit Pension Plans
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(11,759)	(15,207)
Other comprehensive (loss) income	116	194
Ending balance	(11,643)	(15,013)
Accumulated Other Comprehensive Loss
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(50,646)	(62,104)
Other comprehensive (loss) income	(4,094)	6,554
Ending balance	$ (54,740)	$ (55,550)