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Note 4 - Allowance for Credit Losses (Details Textual) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Jan. 01, 2024 | Dec. 31, 2023
Off-Balance-Sheet, Credit Loss, Liability | $ 40,000 | $ 60,000 |  |
Provision for Credit Losses, Amount Excluded | 20,000 | 46,000 |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 129,763,000 | 131,557,000 |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 1,128,000 | 1,201,000 |  | $ 1,176,000
Financing Receivable, Nonaccrual |  |  | $ 200,000 |
Financing Receivable, Modified in Period, Amount | 0 | 0 |  |
Collateral Pledged [Member] |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0 |  |
First Mortgage Loans [Member] | One To Four Family Residential [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 989,000 | 1,056,000 |  | 1,094,000
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Collateral Pledged [Member] |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 284,000 |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 0 |  |  |
Consumer Portfolio Segment [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 2,000 | 2,000 |  | $ 1,000
Mortgage Loans in Process of Foreclosure, Amount | $ 262,000 | $ 0 |  |

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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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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of 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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482454/460-10-45-1 + Details
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