Loans and Allowance for Credit Losses for Loans - Summary of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Allowance for loan losses:
Beginning balance	$ 458,655	$ 359,202
Loans charged-off	(32,573)	(2,595)
Charged-off loans recovered	2,205	2,645
Net (charge-offs) recoveries	(30,368)	50
Provision (credit) for loan losses	9,979	3,258
Ending balance	436,898	362,510
Cumulative Effect, Period of Adoption, Adjustment
Allowance for loan losses:
Beginning balance	(1,368)
Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for loan losses:
Beginning balance	457,287
Commercial and industrial
Allowance for loan losses:
Beginning balance	139,941	103,090
Loans charged-off	(26,047)	(1,571)
Charged-off loans recovered	1,399	824
Net (charge-offs) recoveries	(24,648)	(747)
Provision (credit) for loan losses	13,438	(1,140)
Ending balance	127,992	101,203
Commercial and industrial \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for loan losses:
Beginning balance	(739)
Commercial and industrial \| Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for loan losses:
Beginning balance	139,202
Commercial Real Estate
Allowance for loan losses:
Beginning balance	259,408	217,490
Loans charged-off	(5,698)	(173)
Charged-off loans recovered	24	107
Net (charge-offs) recoveries	(5,674)	(66)
Provision (credit) for loan losses	(9,813)	2,525
Ending balance	243,332	219,949
Commercial Real Estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for loan losses:
Beginning balance	(589)
Commercial Real Estate \| Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for loan losses:
Beginning balance	258,819
Residential Mortgage
Allowance for loan losses:
Beginning balance	39,020	25,120
Loans charged-off	0	(26)
Charged-off loans recovered	21	457
Net (charge-offs) recoveries	21	431
Provision (credit) for loan losses	2,679	2,638
Ending balance	41,708	28,189
Residential Mortgage \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for loan losses:
Beginning balance	(12)
Residential Mortgage \| Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for loan losses:
Beginning balance	39,008
Consumer
Allowance for loan losses:
Beginning balance	20,286	13,502
Loans charged-off	(828)	(825)
Charged-off loans recovered	761	1,257
Net (charge-offs) recoveries	(67)	432
Provision (credit) for loan losses	3,675	(765)
Ending balance	23,866	$ 13,169
Consumer \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for loan losses:
Beginning balance	(28)
Consumer \| Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for loan losses:
Beginning balance	$ 20,258

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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