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Allowance for Credit Losses - Financing Receivable and Allowance Element by Class (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | $ 23,322 | $ 23,465 | $ 16,723 | $ 16,387 | $ 16,201 | $ 15,521
Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 266 |  | 398 | 420 |  |
General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 19,739 |  | 2,028 | 1,891 |  |
Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 3,317 |  | 12,619 | 12,139 |  |
Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 1,678 | 1,937 |  |
Commercial | Real Estate |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 4,511 | 4,719 | 6,116 | 5,575 | 5,480 | 5,367
Commercial | Real Estate | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Commercial | Real Estate | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 974 | 867 |  |
Commercial | Real Estate | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 5,142 | 4,708 |  |
Commercial | Real Estate | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Commercial | Real estate owner occupied |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 4,511 |  | 6,116 |  |  |
Commercial | Real estate owner occupied | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  |  |  |  |
Commercial | Real estate owner occupied | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 3,731 |  |  |  |  |
Commercial | Real estate owner occupied | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 780 |  |  |  |  |
Commercial | Real estate non-owner occupied |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 4,429 | 4,492 | 0 |  |  |
Commercial | Real estate non-owner occupied | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  |  |  |  |
Commercial | Real estate non-owner occupied | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 3,855 |  |  |  |  |
Commercial | Real estate non-owner occupied | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 574 |  |  |  |  |
Commercial | Construction |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 1,602 | 1,469 | 821 | 1,121 | 1,151 | 746
Commercial | Construction | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  | 0 | 6 |  |
Commercial | Construction | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 1,445 |  | 131 | 173 |  |
Commercial | Construction | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 157 |  | 690 | 942 |  |
Commercial | Construction | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Commercial | Other |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 4,797 |  | 3,097 | 3,014 | 2,948 | 2,830
Commercial | Other | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 225 |  | 298 | 315 |  |
Commercial | Other | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 3,909 |  | 446 | 420 |  |
Commercial | Other | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 663 |  | 2,353 | 2,279 |  |
Commercial | Other | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Commercial | Multifamily |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 1,277 | 1,312 | 0 |  |  |
Commercial | Multifamily | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  |  |  |  |
Commercial | Multifamily | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 1,184 |  |  |  |  |
Commercial | Multifamily | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 93 |  |  |  |  |
Municipal |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 376 | 399 | 162 | 160 | 157 | 157
Municipal | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  | 0 | 0 |  |
Municipal | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 332 |  | 0 | 0 |  |
Municipal | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 44 |  | 162 | 160 |  |
Municipal | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Residential | Construction |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 576 | 609 | 199 | 168 | 191 | 148
Residential | Construction | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  | 0 | 0 |  |
Residential | Construction | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 602 |  | 7 | 7 |  |
Residential | Construction | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | (26) |  | 192 | 161 |  |
Residential | Construction | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Residential | Term |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 4,886 | 4,831 | 2,559 | 2,547 | 2,592 | 2,733
Residential | Term | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 41 |  | 100 | 99 |  |
Residential | Term | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 4,020 |  | 83 | 102 |  |
Residential | Term | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 825 |  | 2,376 | 2,346 |  |
Residential | Term | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Home Equity Line of Credit |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 617 | 635 | 1,029 | 993 | 966 | 925
Home Equity Line of Credit | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  | 0 | 0 |  |
Home Equity Line of Credit | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 442 |  | 101 | 106 |  |
Home Equity Line of Credit | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 175 |  | 928 | 887 |  |
Home Equity Line of Credit | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Consumer |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 251 | 278 | 1,062 | 872 | 866 | 833
Consumer | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 0 |  | 0 | 0 |  |
Consumer | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 219 |  | 286 | 216 |  |
Consumer | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | 32 |  | 776 | 656 |  |
Consumer | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Unallocated |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses | $ 0 | $ 0 | 1,678 | 1,937 | $ 1,850 | $ 1,782
Unallocated | Specific Reserves on Loans Evaluated Individually |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Unallocated | General Reserves on Loans Based on Historical Loss Experience |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Unallocated | Reserves for Qualitative Factors |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | 0 | 0 |  |
Unallocated | Unallocated Reserves |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan losses |  |  | $ 1,678 | $ 1,937 |  |

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 + Details
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