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Note 12 - Commitments and Contingencies (Details Textual) - USD ($)
Feb. 29, 2024
Oct. 23, 2023
Dec. 31, 2025
Dec. 31, 2024
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) [1]     $ 2.54 $ 2.8
HC Wainwright Warrants [Member]        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)   $ 2    
Litigation Case, HC Wainwright [Member]        
Loss Contingency, Damages Sought, Value $ 2,156,000 $ 825,000    
Loss Contingency, Damages Sought, Warrants, Number of Securities Called (in shares) 805,000 481,100    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 3.125      
[1] On January 18, 2023, in connection with the 2023 Promissory Notes, the Company issued the investors warrants to purchase 6,250,000 shares of its common stock, exercisable over a period of five years, at an exercise price of $2.00 per share. These warrants were exercisable commencing January 18, 2023 and expire on January 18, 2028.