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Note 4 - Allowance for Credit Losses - Credit Risk Profile of Loan Portfolio (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Loan, current | $ 18,939 | $ 24,501
Loan, one year before | 15,826 | 21,881
Loan, two years before | 16,724 | 12,479
Loan, three years before | 10,910 | 18,418
Loan, four years before | 16,750 | 49,028
Loan, prior | 43,139 | 4,600
Loan, revolving | 7,176 | 0
Loan, revolving converted to term loans | 0 | 130,907
Loans | 129,464 | 130,907
Current year-to-date gross write-offs | 0 | 0
Current year-to-date gross write-offs, one year before | 0 | 0
Current year-to-date gross write-offs, two years before | 0 | 0
Current year-to-date gross write-offs, three years before | 0 | 0
Current year-to-date gross write-offs, four years before | 0 | 0
Current year-to-date gross write-offs, prior | 0 | 0
Current year-to-date gross write-offs, revolving | 0 | 0
Current year-to-date gross write-offs, revolving converted to term loans | 0 | 0
Charge-offs | 0 | 0
Pass [Member] |  |
Loan, current | 18,939 | 24,501
Loan, one year before | 15,564 | 21,881
Loan, two years before | 16,724 | 12,479
Loan, three years before | 10,910 | 18,418
Loan, four years before | 16,750 | 49,028
Loan, prior | 43,117 | 4,600
Loan, revolving | 7,176 | 0
Loan, revolving converted to term loans | 0 | 130,907
Loans | 129,180 |
Special Mention [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
Substandard [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 262 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 22 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 284 |
First Mortgage Loans [Member] |  |
Loans | 129,196 | 130,625
First Mortgage Loans [Member] | One To Four Family Residential [Member] |  |
Loan, current | 16,653 | 20,577
Loan, one year before | 13,597 | 20,986
Loan, two years before | 16,423 | 12,421
Loan, three years before | 10,870 | 18,074
Loan, four years before | 16,434 | 43,245
Loan, prior | 37,791 | 4,106
Loan, revolving | 6,454 | 0
Loan, revolving converted to term loans | 0 | 119,409
Loans | 118,222 | 119,409
Current year-to-date gross write-offs | 0 | 0
Current year-to-date gross write-offs, one year before | 0 | 0
Current year-to-date gross write-offs, two years before | 0 | 0
Current year-to-date gross write-offs, three years before | 0 | 0
Current year-to-date gross write-offs, four years before | 0 | 0
Current year-to-date gross write-offs, prior | 0 | 0
Current year-to-date gross write-offs, revolving | 0 | 0
Current year-to-date gross write-offs, revolving converted to term loans | 0 | 0
Charge-offs | 0 | 0
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Pass [Member] |  |
Loan, current | 16,653 | 20,577
Loan, one year before | 13,335 | 20,986
Loan, two years before | 16,423 | 12,421
Loan, three years before | 10,870 | 18,074
Loan, four years before | 16,434 | 43,245
Loan, prior | 37,769 | 4,106
Loan, revolving | 6,454 | 0
Loan, revolving converted to term loans | 0 | 119,409
Loans | 117,938 |
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Special Mention [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Substandard [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 262 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 22 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 284 |
First Mortgage Loans [Member] | Multifamily [Member] |  |
Loan, current | 0 | 515
Loan, one year before | 507 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 230
Loan, four years before | 221 | 2,623
Loan, prior | 2,512 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 3,368
Loans | 3,240 | 3,368
Current year-to-date gross write-offs | 0 | 0
Current year-to-date gross write-offs, one year before | 0 | 0
Current year-to-date gross write-offs, two years before | 0 | 0
Current year-to-date gross write-offs, three years before | 0 | 0
Current year-to-date gross write-offs, four years before | 0 | 0
Current year-to-date gross write-offs, prior | 0 | 0
Current year-to-date gross write-offs, revolving | 0 | 0
Current year-to-date gross write-offs, revolving converted to term loans | 0 | 0
Charge-offs | 0 | 0
First Mortgage Loans [Member] | Multifamily [Member] | Pass [Member] |  |
Loan, current | 0 | 515
Loan, one year before | 507 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 230
Loan, four years before | 221 | 2,623
Loan, prior | 2,512 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 3,368
Loans | 3,240 |
First Mortgage Loans [Member] | Multifamily [Member] | Special Mention [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
First Mortgage Loans [Member] | Multifamily [Member] | Substandard [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
First Mortgage Loans [Member] | Commercial Real Estate [Member] |  |
Loan, current | 0 | 148
Loan, one year before | 0 | 301
Loan, two years before | 165 | 0
Loan, three years before | 0 | 96
Loan, four years before | 92 | 3,158
Loan, prior | 2,834 | 494
Loan, revolving | 722 | 0
Loan, revolving converted to term loans | 0 | 4,197
Loans | 3,813 | 4,197
Current year-to-date gross write-offs | 0 | 0
Current year-to-date gross write-offs, one year before | 0 | 0
Current year-to-date gross write-offs, two years before | 0 | 0
Current year-to-date gross write-offs, three years before | 0 | 0
Current year-to-date gross write-offs, four years before | 0 | 0
Current year-to-date gross write-offs, prior | 0 | 0
Current year-to-date gross write-offs, revolving | 0 | 0
Current year-to-date gross write-offs, revolving converted to term loans | 0 | 0
Charge-offs | 0 | 0
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Pass [Member] |  |
Loan, current | 0 | 148
Loan, one year before | 0 | 301
Loan, two years before | 165 | 0
Loan, three years before | 0 | 96
Loan, four years before | 92 | 3,158
Loan, prior | 2,834 | 494
Loan, revolving | 722 | 0
Loan, revolving converted to term loans | 0 | 4,197
Loans | 3,813 |
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Substandard [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
First Mortgage Loans [Member] | Construction Loans [Member] |  |
Loan, current | 2,156 | 3,134
Loan, one year before | 1,676 | 517
Loan, two years before | 89 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 3,651
Loans | 3,921 | 3,651
Current year-to-date gross write-offs | 0 | 0
Current year-to-date gross write-offs, one year before | 0 | 0
Current year-to-date gross write-offs, two years before | 0 | 0
Current year-to-date gross write-offs, three years before | 0 | 0
Current year-to-date gross write-offs, four years before | 0 | 0
Current year-to-date gross write-offs, prior | 0 | 0
Current year-to-date gross write-offs, revolving | 0 | 0
Current year-to-date gross write-offs, revolving converted to term loans | 0 | 0
Charge-offs | 0 | 0
First Mortgage Loans [Member] | Construction Loans [Member] | Pass [Member] |  |
Loan, current | 2,156 | 3,134
Loan, one year before | 1,676 | 517
Loan, two years before | 89 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 3,651
Loans | 3,921 |
First Mortgage Loans [Member] | Construction Loans [Member] | Special Mention [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
First Mortgage Loans [Member] | Construction Loans [Member] | Substandard [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
Consumer Portfolio Segment [Member] |  |
Loan, current | 130 | 127
Loan, one year before | 46 | 77
Loan, two years before | 47 | 58
Loan, three years before | 40 | 18
Loan, four years before | 3 | 2
Loan, prior | 2 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 282
Loans | 268 | 282
Current year-to-date gross write-offs | 0 | 0
Current year-to-date gross write-offs, one year before | 0 | 0
Current year-to-date gross write-offs, two years before | 0 | 0
Current year-to-date gross write-offs, three years before | 0 | 0
Current year-to-date gross write-offs, four years before | 0 | 0
Current year-to-date gross write-offs, prior | 0 | 0
Current year-to-date gross write-offs, revolving | 0 | 0
Current year-to-date gross write-offs, revolving converted to term loans | 0 | 0
Charge-offs | 0 | 0
Consumer Portfolio Segment [Member] | Pass [Member] |  |
Loan, current | 130 | 127
Loan, one year before | 46 | 77
Loan, two years before | 47 | 58
Loan, three years before | 40 | 18
Loan, four years before | 3 | 2
Loan, prior | 2 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 282
Loans | 268 |
Consumer Portfolio Segment [Member] | Special Mention [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | 0
Loans | 0 |
Consumer Portfolio Segment [Member] | Substandard [Member] |  |
Loan, current | 0 | 0
Loan, one year before | 0 | 0
Loan, two years before | 0 | 0
Loan, three years before | 0 | 0
Loan, four years before | 0 | 0
Loan, prior | 0 | 0
Loan, revolving | 0 | 0
Loan, revolving converted to term loans | 0 | $ 0
Loans | $ 0 |

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
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- Definition Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: 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 + Details
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- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: 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 + Details
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