XML 38 R28.htm IDEA: XBRL DOCUMENT v3.25.3
Note 7 - Warrants (Details Textual) - USD ($)
9 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Nov. 30, 2019
Maximum Beneficial Ownership Percentage of Warrants 4.99%    
Maximum Beneficial Ownership Percentage of Warrants Upon Investor's Election 9.99%    
Warrant [Member]      
Class of Warrant or Right, Outstanding (in shares) 0 342,240  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)   $ 8.9  
Prefunded Warrants [Member]      
Class of Warrant or Right, Outstanding (in shares) 653,827 763,827  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 0.001 $ 0.001 $ 0.001
Class of Warrant or Right Exercised in Period 110,000    
Proceeds from Warrant Exercises $ 110