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Loans and Allowance for Credit Losses - Summary of Amortized Cost Basis of Individually Evaluated Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Business Assets |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | $ 2,058 | $ 2,307
Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 4,978 | 3,564
Commercial real estate | Business Assets |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 0 | 0
Commercial real estate | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 3,573 | 3,564
Residential mortgage | Business Assets |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 0 | 0
Residential mortgage | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 1,062 | 0
Commercial and industrial | Business Assets |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 2,058 | 2,307
Commercial and industrial | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 337 | 0
Home equity lines of credit | Business Assets |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | 0 | 0
Home equity lines of credit | Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing Receivable, Individually Evaluated for Impairment | $ 6 | $ 0

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