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Note 2 - Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| Three Months Ended |  |  | Six Months Ended |
| 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | (1,280,376 | ) |  |  | (2,929,708 | ) |  |  | 5,779,663 |  |  | $ | (9,245,295 | )
Accrued dividends on Series F Preferred Stock |  |  | (52,038 | ) |  |  | (49,748 | ) |  |  | (119,688 | ) |  |  | (110,983 | )
Deemed dividends |  |  | (3,677,811 | ) |  |  | (7,751 | ) |  |  | (4,734,143 | ) |  |  | (5,257,455 | )
Numerator for basic EPS - net income (loss) available to common stockholders |  |  | (5,010,225 | ) |  |  | (2,987,207 | ) |  |  | 925,832 |  |  |  | (14,613,733 | )
Effect of convertible securities and liability classified equity instrument: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued dividends on Series F Preferred Stock |  |  | — |  |  |  | — |  |  |  | 119,688 |  |  |  | — |
Interest expense on convertible note payable |  |  | — |  |  |  | — |  |  |  | 45,150 |  |  |  | — |
Gain on change in fair value of warrant liabilities |  |  | — |  |  |  | — |  |  |  | (8,506,000 | ) |  |  | — |
Numerator for diluted EPS - net loss available to common stockholders |  | $ | (5,010,225 | ) |  | $ | (2,987,207 | ) |  | $ | (7,415,330 | ) |  | $ | (14,613,733 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic EPS - weighted average shares |  |  | 15,524,049 |  |  |  | 247,728 |  |  |  | 13,835,214 |  |  |  | 205,788 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental shares for outstanding warrants |  |  | — |  |  |  | — |  |  |  | 4,837,593 |  |  |  | — |
Convertible Series F Preferred Stock |  |  | — |  |  |  | — |  |  |  | 2,485,654 |  |  |  | — |
Unvested restricted stock units |  |  | — |  |  |  | — |  |  |  | 68,797 |  |  |  | — |
Denominator for diluted EPS - weighted average shares |  |  | 15,524,049 |  |  |  | 247,728 |  |  |  | 21,227,258 |  |  |  | 205,788 |
Net income (loss) per common share - basic |  | $ | (0.32 | ) |  | $ | (12.06 | ) |  | $ | 0.07 |  |  | $ | (71.01 | )
Net loss per common share - diluted |  | $ | (0.32 | ) |  | $ | (12.06 | ) |  | $ | (0.35 | ) |  | $ | (71.01 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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