Loans and Allowance for Credit Losses - Composition of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Composition of the loans
Portfolio loans, net of unearned income	$ 7,251,064	$ 7,183,969
Loans held for sale	81	16
Total Loans	7,251,145	7,183,985
Interest receivable	29,700	28,300
Commercial Loans \| Commercial real estate
Composition of the loans
Portfolio loans, net of unearned income	2,523,434	2,538,839
Commercial Loans \| Commercial and industrial
Composition of the loans
Portfolio loans, net of unearned income	1,493,519	1,510,392
Commercial Loans \| Commercial construction
Composition of the loans
Portfolio loans, net of unearned income	376,855	381,963
Business Banking
Composition of the loans
Portfolio loans, net of unearned income	1,261,842	1,205,944
Consumer Loans \| Consumer real estate
Composition of the loans
Portfolio loans, net of unearned income	1,475,575	1,421,953
Consumer Loans \| Other consumer
Composition of the loans
Portfolio loans, net of unearned income	$ 119,839	$ 124,878

Financing Receivable, Before Allowance For Credit Loss And Held For Sale, Not Part Of A Disposal Group

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of 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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480833/946-310-45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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- References

No definition available.

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- Definition

Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481852/948-310-45-1

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