Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Before Tax Amount
Income (loss) before tax amount		$ 25,016	$ 22,592	$ 52,573	$ 48,148
Net unrealized gains (losses) on available-for-sale investment securities, before tax amount
Net unrealized holding gains arising during the period		3,875	148	11,035	(2,841)
Reversal of provision for credit losses		(729)	(36)	(822)	50
Other comprehensive income (loss), securities, available-for-sale, adjustment, before tax		3,146	112	10,213	(2,791)
Net unrealized gains (losses) on interest rate swaps used in cash flow hedges, before tax amount
Interest rate swap—cash flow hedge—net interest payments		0	(1,064)	0	(5,077)
Less: reclassification adjustment for net losses realized in net income		0	1,586	0	3,172
Reclassification adjustment included in earnings	[1]	569		1,134
Total net unrealized gains on interest rate swaps used in cash flow hedges		569	522	1,134	(1,905)
Defined benefit pension plans, Before Tax Amount
Amortization of net actuarial loss included in net periodic pension costs	[2]	23	147	75	294
Total defined benefit pension plans		23	147	75	294
Other comprehensive income (loss), before tax amount		3,738	781	11,422	(4,402)
Total comprehensive income (loss), before tax amount		28,754	23,373	63,995	43,746
Tax Expense (Benefit)
Income tax expense		5,038	4,485	10,200	9,736
Net unrealized gains (losses) on interest rate swaps used in cash flow hedges, before tax expense (benefit)
Net unrealized holding gains (losses) arising during the period		814	32	2,318	(596)
(Reversal of provision) provision for credit losses		(153)	(8)	(173)	10
Total net unrealized gains on available-for-sale investment securities		661	24	2,145	(586)
Net unrealized gains (losses) on interest rate swaps used in cash flow hedges, tax expense (benefit)
Net unrealized holding losses arising during the period		0	(223)	0	(1,066)
Less: reclassification adjustment for net losses realized in net income		0	333	0	666
Reclassification adjustment recorded in earnings	[1]	119		238
Total net unrealized gains on interest rate swaps used in cash flow hedges		119	110	238	(400)
Defined benefit pension plans, tax expense (benefit)
Amortization of net actuarial loss included in net periodic pension costs	[2]	5	31	16	62
Other comprehensive (income) loss, defined benefit plan, after reclassification adjustment, tax		5	31	16	62
Other comprehensive income (loss), tax expense (benefit)		785	165	2,399	(924)
Total comprehensive income (loss), tax expense (benefit)		5,823	4,650	12,599	8,812
Net of Tax Amount
Net income		19,978	18,107	42,373	38,412
Net unrealized gains (losses) on available-for-sale investment securities, net of tax amount
Net unrealized holding gains arising during the period		3,061	116	8,717	(2,245)
Recovery of provision for credit losses, after tax		(576)	(28)	(649)	40
Other comprehensive income (loss), securities, available-for-sale, adjustment, after tax		2,485	88	8,068	(2,205)
Net unrealized gains (losses) on interest rate swaps used in cash flow hedges, net of tax amount
Net unrealized holding losses arising during the period		0	(841)	0	(4,011)
Less: reclassification adjustment for net losses realized in net income		0	1,253	0	2,506
Reclassification adjustment recorded in earnings	[1]	450		896
Total net unrealized gains on interest rate swaps used in cash flow hedges		450	412	896	(1,505)
Defined benefit pension plans, net of tax amount
Amortization of net actuarial loss included in net periodic pension costs	[2]	18	116	59	232
Other comprehensive (income) loss, defined benefit plan, after reclassification adjustment, after tax		18	116	59	232
Other comprehensive income (loss), net of tax amount		2,953	616	9,023	(3,478)
Total comprehensive income (loss), net of tax amount		$ 22,931	$ 18,723	$ 51,396	$ 34,934

[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.

[2] These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (before tax amount). See Note 8, "Retirement Plans and Other Postretirement Benefits" for additional details.