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Note 19 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Statutory rate | 21.00% | 21.00%
State tax | 3.10% | 4.50%
Stock-based compensation expense | (1.40%) | (1.40%)
Change in valuation allowance | (16.50%) | (19.50%)
Warrant/equity expenses | (4.00%) | (3.70%)
Expiration of tax attributes | (2.20%) | 0.00%
Impairment of assets | 0.00% | (0.90%)
Other | 0.00% | (0.10%)
Total | 0.00% | 0.00%

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to warrant and equity expenses. + References No definition available. + Details
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