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Allowance for Credit Losses - Rollforward of the Reserve for Unfunded Commitments (Details) - Unfunded Commitments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	$ 33,347	$ 33,413	$ 32,847	$ 35,605
Provision (benefit)	2,850	284	3,350	(1,908)
Reserve for unfunded commitments, ending balance	36,197	33,697	36,197	33,697
Commercial and Industrial
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	8,492	7,947	8,112	9,116
Provision (benefit)	(383)	104	(3)	(1,065)
Reserve for unfunded commitments, ending balance	8,109	8,051	8,109	8,051
Commercial Real Estate
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	1,003	1,435	1,003	1,787
Provision (benefit)	106	(262)	106	(614)
Reserve for unfunded commitments, ending balance	1,109	1,173	1,109	1,173
Construction
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	7,403	7,122	7,818	8,048
Provision (benefit)	2,474	643	2,059	(283)
Reserve for unfunded commitments, ending balance	9,877	7,765	9,877	7,765
Residential mortgage
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	21	8
Provision (benefit)	16	14
Reserve for unfunded commitments, ending balance	37	22	37	22
Home Equity Line
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	16,405	16,879	15,893	16,589
Provision (benefit)	624	(240)	1,136	50
Reserve for unfunded commitments, ending balance	17,029	16,639	17,029	16,639
Consumer
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	23	22	18	41
Provision (benefit)	13	25	18	6
Reserve for unfunded commitments, ending balance	36	47	36	47
Real estate loan
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			3	24
Provision (benefit)			34	(2)
Reserve for unfunded commitments, ending balance	$ 37	$ 22	$ 37	$ 22

X

- Definition

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+ References

No definition available.

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- Definition

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482454/460-10-45-1

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