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Note 2 - Securities (Details Textual) Pure in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
Debt Securities, Available-for-Sale, Excluding Accrued Interest | $ 78,719 | $ 71,249
Number of Securities of One Issuer Greater Than Ten Percent of Members' Equity | 0 | 0
Proceeds from Sale of Debt Securities, Available-for-Sale | $ 0 | $ 0
Asset Pledged as Collateral [Member] |  |
Debt Securities, Available-for-Sale, Excluding Accrued Interest | 0 | 0
Commercial Mortgage-Backed Securities [Member] |  |
Debt Securities, Available-for-Sale, Excluding Accrued Interest | $ 27,185 | $ 24,941
Commercial Mortgage-Backed Securities [Member] | Minimum [Member] |  |
Debt Securities, Available-for-Sale, Term (Year) | 1 year |
Commercial Mortgage-Backed Securities [Member] | Maximum [Member] |  |
Debt Securities, Available-for-Sale, Term (Year) | 5 years |

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- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
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- Definition Period between issuance and maturity of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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