Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1,155)	$ 18,723
Other comprehensive income (loss), net of tax:
Unrealized (loss) gain on debt securities available for sale	(4,992)	13,069
Accretion of unrealized gain (loss) on debt securities reclassified as held to maturity	4	(7)
Reclassification adjustment for (loss) gain included in net income	(903)	(929)
Total other comprehensive (loss) income, net of tax	(5,891)	12,133
Derivatives, net of tax:
Unrealized gain (loss) on swap contracts accounted for as cash flow hedges	3,760	(865)
Total derivative, net of tax	3,760	(865)
Employee benefit plans, net of tax:
Amortization of prior service cost included in net income	(10)	(10)
Reclassification adjustment of actuarial net (loss) gain included in net income	(384)	1
Change in funded status of retirement obligations	423	179
Total employee benefit plans, net of tax	29	170
Total other comprehensive (loss) income	(2,102)	11,438
Total comprehensive (loss) income, net of tax	$ (3,257)	$ 30,161