Loans and Allowance for Credit Losses for Loans - Summary of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Allowance for loan losses:
Beginning balance	$ 558,850	$ 446,080
Loans charged-off	(127,708)	(215,112)
Charged-off loans recovered	10,793	13,502
Net (charge-offs) recoveries	(116,915)	(201,610)
Provision (credit) for loan losses	141,465	314,380
Ending balance	583,400	558,850
Commercial and Industrial
Allowance for loan losses:
Beginning balance	173,002	133,359
Loans charged-off	(62,348)	(68,299)
Charged-off loans recovered	5,404	6,038
Net (charge-offs) recoveries	(56,944)	(62,261)
Provision (credit) for loan losses	64,807	101,904
Ending balance	180,865	173,002
Commercial real estate
Allowance for loan losses:
Beginning balance	304,148	249,598
Loans charged-off	(56,397)	(138,495)
Charged-off loans recovered	2,387	5,130
Net (charge-offs) recoveries	(54,010)	(133,365)
Provision (credit) for loan losses	77,288	187,915
Ending balance	327,426	304,148
Residential Mortgage
Allowance for loan losses:
Beginning balance	58,895	42,957
Loans charged-off	(72)	(29)
Charged-off loans recovered	441	140
Net (charge-offs) recoveries	369	111
Provision (credit) for loan losses	(5,735)	15,827
Ending balance	53,529	58,895
Consumer
Allowance for loan losses:
Beginning balance	22,805	20,166
Loans charged-off	(8,891)	(8,289)
Charged-off loans recovered	2,561	2,194
Net (charge-offs) recoveries	(6,330)	(6,095)
Provision (credit) for loan losses	5,105	8,734
Ending balance	$ 21,580	$ 22,805

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

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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+ References

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

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

+ References

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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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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Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
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-Publisher FASB
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