Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 36,086	$ 86,173	$ 92,049
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on debt securities available for sale	29,637	(137,255)	(30,979)
Accretion of unrealized loss on debt securities reclassified as held to maturity	(10)	(22)	(3)
Reclassification adjustment for (loss) gain included in net income	(7,794)	151	1,598
Total other comprehensive (loss) income, available-for-sale securities and held-to-maturity adjustments, net of tax	21,833	(137,126)	(29,384)
Derivatives, net of tax:
Unrealized (loss) gain on swap contracts accounted for as cash flow hedges	(918)	5,421	11,939
Total derivative, net of tax	(918)	5,421	11,939
Employee benefit plans, net of tax:
Amortization of prior service cost included in net income	(40)	(41)	(39)
Reclassification adjustment of actuarial net (loss) included in net income	(558)	(1,928)	(2,915)
Change in funded status of retirement obligations	244	297	44,105
Total employee benefit plans, net of tax	(354)	(1,672)	41,151
Total other comprehensive income (loss)	20,561	(133,377)	23,706
Total comprehensive income (loss), net of tax	$ 56,647	$ (47,204)	$ 115,755