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Loans (Aging Of Past Due Loans) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | $ 15,586 |  | $ 17,595 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 7,349,745 |  | 7,141,891 |
Loan balance |  | 7,349,745 |  | 7,141,891 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans |  | 22,164 | [1] | 22,085 | [2]
Impaired Financing Receivable, Recorded Investment, Nonaccrual loans which are current in regards to contractual P&I payments |  | 33,500 |  | 58,900 |
Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 7,311,995 |  | 7,102,211 |
Construction Real Estate Commercial [Domain] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  |  |  | 751 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 182,992 |  | 208,982 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans | [1] | 549 |  |  |
Construction Real Estate Commercial [Domain] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 182,443 |  | 208,231 |
Residential Real Estate Commercial [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | 54 |  | 519 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 583,251 |  | 550,183 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans |  | 219 | [1] | 477 | [2]
Residential Real Estate Commercial [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 582,978 |  | 549,187 |
Residential Real Estate - Mortgage [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | 7,584 |  | 7,630 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,185,544 |  | 1,075,446 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans |  | 5,386 | [1] | 5,157 | [2]
Residential Real Estate - Mortgage [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,172,574 |  | 1,062,659 |
Residential Real Estate - HELOC [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | 655 |  | 832 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 173,256 |  | 167,151 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans |  | 699 | [1] | 587 | [2]
Residential Real Estate - HELOC [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 171,902 |  | 165,732 |
Residential Real Estate - Installment [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | 19 |  | 57 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 5,295 |  | 4,091 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans | [2] |  |  | 4 |
Residential Real Estate - Installment [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 5,276 |  | 4,030 |
PPP loans receivable [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  |  |  | 155 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,427 |  | 4,206 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans |  |  |  | 389 |
PPP loans receivable [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,427 |  | 3,662 |
Bank Overdrafts |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,109 |  | 1,489 |
Bank Overdrafts | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,109 |  | 1,489 |
Construction Real Estate Retail |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | 8 |  | 1,035 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 105,934 |  | 116,433 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans | [2] |  |  | 523 |
Construction Real Estate Retail | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 105,926 |  | 114,875 |
Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | 206 |  | 737 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,833,400 |  | 1,794,054 |
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans |  | 2,322 | [1] | 4,738 | [2]
Commercial Real Estate [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,830,872 |  | 1,788,579 |
Finance Leases Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 18,429 |  | 19,637 |
Finance Leases Portfolio Segment [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 18,429 |  | 19,637 |
PPP loans receivable [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,427 |  | 4,206 |
Check loans |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Accruing loans past due 30-89 days |  | 4 |  | 2 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,053 |  | 2,150 |
Check loans | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,049 |  | 2,148 |
Bank Overdrafts |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 3,109 |  | $ 1,489 |
[1] | 1) Includes an aggregate of $0.6 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans.(2) Includes an aggregate of $33.5 million of nonaccrual loans which were current with respect to contractual principal and interest payments
[2] | 1) Includes an aggregate of $1.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans.(2) Includes an aggregate of $58.9 million of nonaccrual loans which were current with respect to contractual principal and interest payments.

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