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Loans and Allowance for Loan Credit Losses - Schedule of Composition of the Loan Portfolio (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Total Loans | $ 287,813 |  | $ 313,287 |  |  |  |
Less allowance for credit losses | (4,193) | $ (4,476) | (4,514) |  | $ (4,337) | $ (4,324) | $ (4,319)
Loans, net | 283,620 |  | 308,773 | [1] |  |  |
Commercial real estate |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Total Loans | 52,540 |  | 53,480 |  |  |  |
Less allowance for credit losses | (1,307) | (1,304) | (1,140) |  | (1,136) | (1,217) | (1,233)
Commercial |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Total Loans | 5,023 |  | 27,883 |  |  |  |
Less allowance for credit losses | (88) | (259) | (483) |  | (167) | (177) | (189)
Residential real estate closed-end |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Total Loans | 210,426 |  | 210,730 |  |  |  |
Less allowance for credit losses | (2,560) | (2,675) | (2,644) |  | (2,756) | (2,681) | (2,668)
Other consumer loans |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Total Loans | 19,824 |  | 21,194 |  |  |  |
Less allowance for credit losses | $ (238) | $ (238) | $ (247) |  | $ (278) | $ (249) | $ (229)
[1] | Derived from audited consolidated financial statements.

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