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Note 12 - Income Taxes (Details Textual) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Sep. 13, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Aug. 31, 2023
Unrecognized Tax Benefits |  | $ 1,100,000 |  |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense |  | 0 | $ 0 | $ 0 |
Domestic Tax Jurisdiction [Member] |  |  |  |  |
Operating Loss Carryforwards |  | 18,466 |  |  |
Tax Credit Carryforward, Amount Purchased | $ 23,200,000 |  |  |  |
Tax Credit Carryforward, Amount |  | 12,900,000 |  |  |
Payments to Acquire Tax Credit | $ 12,000,000 |  |  |  |
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] |  |  |  |  |
Operating Loss Carryforwards |  | $ 5,570 |  |  |
State and Local Jurisdiction [Member] | New York State Division of Taxation and Finance [Member] |  |  |  |  |
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority |  |  |  |  | $ 70,000

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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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