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Note 15 - Federal and State Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Unrecognized tax benefits that would impact effective tax rate | $ 2,500 |  |
Unrecognized tax benefits, interest on income taxes accrued | $ 486 | $ 333 |
Effective income tax rate | 21.00% | 21.00% | 21.00%
Domestic Tax Authority [Member] |  |  |
Deferred tax assets, operating loss carryforwards, subject to expiration | $ 2,800 |  |
Domestic Tax Authority [Member] | Community National And CNB [Member] |  |  |
Deferred tax assets, operating loss carryforwards, subject to expiration | 1,400 |  |
Domestic Tax Authority [Member] | Guaranty Bank and Trust Company |  |  |
Federal Tax NOL | 1,400 |  |
State and Local Jurisdiction [Member] |  |  |
Deferred tax assets, operating loss carryforwards, subject to expiration | 2,000 |  |
State and Local Jurisdiction [Member] | Community National And CNB [Member] |  |  |
Deferred tax assets, operating loss carryforwards, subject to expiration | $ 2,000 |  |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 + Details
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- Definition Amount of interest expense accrued for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A + Details
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