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Loans and Allowance for Credit Losses on Loans (Credit Risk Exposure Indicators by Portfolio Segment) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | $ 4,098,094 | $ 4,010,353
Residential real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,763,378 | 1,700,266
Commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 403,901 | 430,131
Home equity |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 240,341 | 234,428
Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | $ 18,168 | $ 20,591

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