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Age Analysis of Past Due Financing receivables (Details) $ in Thousands | Dec. 31, 2024 USD ($) loan | Dec. 31, 2023 USD ($) loan
--- | --- | ---
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan |  | 761 | 480
Financing Receivable, before Allowance for Credit Loss |  | $ 14,508,378 | $ 14,278,070
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan |  | 28 | 29
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan |  | 37 | 40
Number of Loans Total Past Due | loan |  | 826 | 549
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 47,521 | $ 23,616
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,201 | 29,433
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 37,686 | 10,305
Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 87,408 | 63,354
Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 14,420,970 | $ 14,214,716
Commercial and Industrial [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan |  | 120 | 7
Financing Receivable, before Allowance for Credit Loss |  | $ 3,047,671 | $ 2,925,823
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan |  | 1 | 1
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan |  | 5 | 2
Number of Loans Total Past Due | loan |  | 126 | 10
Commercial and Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 5,807 | $ 785
Commercial and Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 5 | 17,538
Commercial and Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 13,843 | 673
Commercial and Industrial [Member] | Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 19,655 | 18,996
Commercial and Industrial [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 3,028,016 | $ 2,906,827
Commercial Real Estate [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan |  | 3 | 7
Financing Receivable, before Allowance for Credit Loss |  | $ 6,756,708 | $ 6,695,671
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan |  | 0 | 2
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan |  | 3 | 3
Number of Loans Total Past Due | loan |  | 6 | 12
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 33,087 | $ 14,287
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 8,419
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 20,458 | 7,279
Commercial Real Estate [Member] | Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 53,545 | 29,985
Commercial Real Estate [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 6,703,163 | $ 6,665,686
Construction Loans [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan |  | 0 | 0
Financing Receivable, before Allowance for Credit Loss |  | $ 782,078 | $ 849,586
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan |  | 0 | 0
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan |  | 0 | 0
Number of Loans Total Past Due | loan |  | 0 | 0
Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 0 | $ 0
Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Construction Loans [Member] | Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Construction Loans [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 782,078 | $ 849,586
Small Business [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan |  | 6 | 6
Financing Receivable, before Allowance for Credit Loss |  | $ 281,781 | $ 251,956
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan |  | 4 | 1
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan |  | 3 | 6
Number of Loans Total Past Due | loan |  | 13 | 13
Small Business [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 830 | $ 400
Small Business [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 24 | 20
Small Business [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 29 | 243
Small Business [Member] | Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 883 | 663
Small Business [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 280,898 | $ 251,293
Residential Real Estate [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan |  | 27 | 24
Financing Receivable, before Allowance for Credit Loss |  | $ 2,460,600 | $ 2,424,754
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan |  | 9 | 7
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan |  | 10 | 13
Number of Loans Total Past Due | loan |  | 46 | 44
Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 6,310 | $ 6,216
Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,401 | 2,187
Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,224 | 1,573
Residential Real Estate [Member] | Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 9,935 | 9,976
Residential Real Estate [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 2,450,665 | $ 2,414,778
Home Equity [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan |  | 9 | 23
Financing Receivable, before Allowance for Credit Loss |  | $ 1,140,168 | $ 1,097,626
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan |  | 11 | 4
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan |  | 10 | 10
Number of Loans Total Past Due | loan |  | 30 | 37
Home Equity [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 1,046 | $ 1,640
Home Equity [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 764 | 1,238
Home Equity [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,126 | 529
Home Equity [Member] | Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,936 | 3,407
Home Equity [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 1,137,232 | $ 1,094,219
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | [1] | 596 | 413
Financing Receivable, before Allowance for Credit Loss | [1] | $ 39,372 | $ 32,654
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | [1] | 3 | 14
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | [1] | 6 | 6
Number of Loans Total Past Due | loan | [1] | 605 | 433
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | [1] | $ 441 | $ 288
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | [1] | 7 | 31
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | [1] | 6 | 8
Consumer Portfolio Segment [Member] | Financial Asset, Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | [1] | 454 | 327
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | [1] | $ 38,918 | $ 32,327
[1] | Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances.

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