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Note 11 - Income Taxes (Details Textual) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Jan. 01, 2018 | Dec. 31, 2017
Operating Loss Carryforwards [Line Items] |  |  |  |
Increase of valuation allowance | $ 3,500,000 | $ 2,300,000 |  |
Uncertain income tax positions | 0 | $ 0 |  |
Federal [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carry forwards | 109,400,000 |  | $ 31,700,000 | $ 77,800,000
State [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carry forwards | $ 63,000,000 |  |  |

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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