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Loans and Allowance for Credit Losses - Loan Modifications not Classified as TDRs (Details) $ in Thousands | Sep. 30, 2023 USD ($) loan | Dec. 31, 2022 USD ($) loan
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Portfolio loans | $ 2,044 | $ 5,100
COVID-19 Loan Modifications |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Portfolio loans |  | $ 999
Number of modifications | loan | 0 | 1
Interest Only | COVID-19 Loan Modifications |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Portfolio loans |  | $ 999
Number of modifications | loan |  | 1
Full Payment Deferral | COVID-19 Loan Modifications |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Portfolio loans |  | $ 0
Number of modifications | loan |  | 0

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