Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance				$ (50,646)
Other comprehensive income		$ 12,501	$ (10,552)	9,023	$ (9,482)
Reclassification adjustment recorded in earnings	[1]	292		292
Ending balance		(41,623)		(41,623)
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 income				6,986	(7,911)
Ending balance		(27,335)	(47,977)	(27,335)	(47,977)
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 income				1,397	(2,154)
Reclassification adjustment recorded in earnings				292
Ending balance		(2,877)	(8,985)	(2,877)	(8,985)
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 income				348	583
Ending balance		(11,411)	(14,624)	(11,411)	(14,624)
Accumulated Other Comprehensive Loss
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance				(50,646)	(62,104)
Other comprehensive income				8,731	(9,482)
Ending balance		$ (41,623)	$ (71,586)	$ (41,623)	$ (71,586)

[1] (1) Represents reclassification to earnings as a reduction to interest income of amounts included in accumulated other comprehensive income on the condensed consolidated balance sheet related to the interest rate swap terminated on August 2, 2024.