Loans - Schedule of Allowance for Credit Losses by Portfolio Type (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Allowance for credit losses:
Balance, beginning of period	$ 85,016	$ 88,221
Provision for (benefit from) credit losses	8,500	4,200
Loans charged off	(10,648)	(812)
Recoveries	87	181
Balance, end of period	82,955	91,790
Commercial and Industrial
Allowance for credit losses:
Balance, beginning of period	42,902	38,489
Provision for (benefit from) credit losses	8,423	5,434
Loans charged off	(10,584)	(643)
Recoveries	68	119
Balance, end of period	40,809	43,399
Commercial Real Estate
Allowance for credit losses:
Balance, beginning of period	24,408	28,323
Provision for (benefit from) credit losses	198	(1,639)
Loans charged off	0	0
Recoveries	0	0
Balance, end of period	24,606	26,684
Residential Real Estate
Allowance for credit losses:
Balance, beginning of period	13,323	15,450
Provision for (benefit from) credit losses	180	(262)
Loans charged off	0	0
Recoveries	0	23
Balance, end of period	13,503	15,211
Public Finance
Allowance for credit losses:
Balance, beginning of period	2,942	4,750
Provision for (benefit from) credit losses	(254)	493
Loans charged off	0	0
Recoveries	0	0
Balance, end of period	2,688	5,243
Consumer
Allowance for credit losses:
Balance, beginning of period	721	750
Provision for (benefit from) credit losses	(2)	98
Loans charged off	(64)	(169)
Recoveries	19	39
Balance, end of period	674	718
Other
Allowance for credit losses:
Balance, beginning of period	720	459
Provision for (benefit from) credit losses	(45)	76
Loans charged off	0	0
Recoveries	0	0
Balance, end of period	$ 675	$ 535

Financing Receivable, Credit Loss, Expense (Reversal), Excluding For Unfunded Commitments

No definition available.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
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-Publisher FASB
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-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
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-Publisher FASB
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-Topic 326
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-Publisher FASB
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-Topic 326
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-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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- Definition

Amount, excluding accrued interest, of decrease (increase) in allowance for credit loss on financing receivable from writeoff (recovery). Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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