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Note 11 - Subordinated Debentures (Details Textual) - USD ($) $ in Thousands |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 01, 2030 | Jan. 01, 2025 | Sep. 30, 2025 | Sep. 30, 2025 | Dec. 31, 2020
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | Secured Overnight Financing Rate (SOFR) [Member] |  |  |
Forecast [Member] |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |
Subordinated Debt [Member] |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 12,000
Interest Expense, Debt |  |  | $ 225 | $ 225 |
Subordinated Debt [Member] | The 2035 Notes [Member] |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 2,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 4.75%
Subordinated Debt [Member] | The 2035 Notes [Member] | Forecast [Member] |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 4.14% |  |  |  |
Subordinated Debt [Member] | The 2030 Notes [Member] |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 10,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 4.75%
Debt Instrument, Basis Spread on Variable Rate |  | 4.52% |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
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