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Loans and Allowance for Loan Losses - Impaired Loans by Loan Portfolio Class (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Commercial Portfolio | Commercial and industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Recorded Investment | $ 1,222 | $ 308
Impaired Loans with Allowance: Unpaid Principal Balance | 1,703 | 339
Impaired Loans with Allowance: Related Allowance | 801 | 67
Impaired Loans: Total Recorded Investment | 1,222 | 308
Impaired Loans: Total Unpaid Principal Balance | 1,721 | 370
Commercial Portfolio | Commercial and industrial | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 0 | 0
Impaired Loans with No Allowance: Unpaid Principal Balance | 18 | 31
Commercial Portfolio | Commercial real estate |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Recorded Investment | 230 | 287
Impaired Loans with Allowance: Unpaid Principal Balance | 235 | 359
Impaired Loans with Allowance: Related Allowance | 64 | 121
Impaired Loans: Total Recorded Investment | 4,860 | 3,372
Impaired Loans: Total Unpaid Principal Balance | 6,281 | 4,511
Commercial Portfolio | Commercial real estate | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 2,093 | 854
Impaired Loans with No Allowance: Unpaid Principal Balance | 2,514 | 1,243
Commercial Portfolio | Commercial real estate | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 2,537 | 2,231
Impaired Loans with No Allowance: Unpaid Principal Balance | 3,532 | 2,909
Commercial Portfolio | Commercial real estate - construction |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Related Allowance | 0 | 0
Impaired Loans: Total Recorded Investment | 0 | 1,218
Impaired Loans: Total Unpaid Principal Balance | 2 | 1,496
Commercial Portfolio | Commercial real estate - construction | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 0 | 22
Impaired Loans with No Allowance: Unpaid Principal Balance | 2 | 27
Commercial Portfolio | Commercial real estate - construction | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 0 | 1,196
Impaired Loans with No Allowance: Unpaid Principal Balance | 0 | 1,469
Consumer Portfolio Segment | Residential mortgage |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Related Allowance | 0 | 0
Impaired Loans: Total Recorded Investment | 2,093 | 2,621
Impaired Loans: Total Unpaid Principal Balance | 2,688 | 3,142
Consumer Portfolio Segment | Residential mortgage | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 1,079 | 1,259
Impaired Loans with No Allowance: Unpaid Principal Balance | 1,129 | 1,295
Consumer Portfolio Segment | Residential mortgage | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 1,014 | 1,362
Impaired Loans with No Allowance: Unpaid Principal Balance | 1,559 | 1,847
Consumer Portfolio Segment | Home equity |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Allowance: Recorded Investment | 252 | 0
Impaired Loans with Allowance: Unpaid Principal Balance | 252 | 0
Impaired Loans with Allowance: Related Allowance | 22 | 0
Impaired Loans: Total Recorded Investment | 411 | 2,463
Impaired Loans: Total Unpaid Principal Balance | 440 | 2,488
Consumer Portfolio Segment | Home equity | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 33 | 2,377
Impaired Loans with No Allowance: Unpaid Principal Balance | 34 | 2,377
Consumer Portfolio Segment | Home equity | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Allowance: Recorded Investment | 126 | 86
Impaired Loans with No Allowance: Unpaid Principal Balance | $ 154 | $ 111

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