Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 86,173	$ 92,049	$ 57,603
Other comprehensive income (loss), net of tax:
Unrealized (loss) gain on debt securities available for sale	(137,255)	(30,979)	21,236
Accretion of unrealized (loss) gain on debt securities reclassified as held to maturity	(22)	(3)	126
Reclassification adjustment for gain included in net income	151	1,598	289
Total other comprehensive (loss) income, available-for-sale securities and held-to-maturity adjustments, net of tax	(137,126)	(29,384)	21,651
Derivatives, net of tax:
Unrealized gain (loss) on swap contracts accounted for as cash flow hedges	5,421	11,939	(8,382)
Total derivative, net of tax	5,421	11,939	(8,382)
Employee benefit plans, net of tax:
Amortization of prior service cost included in net income	(41)	(39)	(44)
Reclassification adjustment of actuarial net (loss) included in net income	(1,928)	(2,915)	(3,384)
Change in funded status of retirement obligations	297	44,105	(10,731)
Total employee benefit plans, net of tax	(1,672)	41,151	(14,159)
Total other comprehensive income (loss)	(133,377)	23,706	(890)
Total comprehensive income (loss), net of tax	$ (47,204)	$ 115,755	$ 56,713