Annual report [Section 13 and 15(d), not S-K Item 405]

Note 2 - Summary of Significant Accounting Policies - Reconciliation of Net Loss (Details)

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Note 2 - Summary of Significant Accounting Policies - Reconciliation of Net Loss (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Net loss $ (16,635,000) $ (30,330,000)
Deemed dividend on Series AA Preferred Stock – down round feature 0 (7,567,000)
Preferred Dividends paid in shares of common stock (4,386,000) (374,000)
Net loss attributable to common stockholders $ (21,021,000) $ (38,271,000)