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Note 10 - Equity (Details Textual) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 03, 2026
Jan. 28, 2026
Jan. 05, 2026
Feb. 03, 2025
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Nov. 21, 2025
Aug. 13, 2025
Aug. 12, 2025
Proceeds from Issuance of Common Stock         $ 60,979,181 $ 0        
Stock Issued During Period, Shares, New Issues (in shares)           1,839,390        
Proceeds From Issuance of Common Stock, Net of Issuance Costs $ 6,937,498                  
Stock Issued During Period, Value, New Issues         $ 60,979,181          
Share Price (in dollars per share)         $ 3.05 $ 2.44 $ 3.76   $ 3.17 $ 3.17
Class of Warrant or Right, Exercises (in shares)         0 0        
Class of Warrant or Right, Expired (in shares)         0 0        
Conversion of Kips Bay Note 2025 to Common Stock [Member] | Registered Stock [Member]                    
Debt Conversion, Converted Instrument, Shares Issued (in shares)       66,035            
Stock Issued, Percentage of Principal of Debt       3.00%            
Nonemployee Directors [Member]                    
Stock Issued During Period, Shares, Issued for Services (in shares)     463,721              
Stock Issued During Period, Value, New Issues     $ 1,864,159              
Share Price (in dollars per share)     $ 4.02              
Confidentially Marketed Public Offering [Member]                    
Proceeds from Issuance of Common Stock $ 7,499,998 $ 50,000,002                
Stock Issued During Period, Shares, New Issues (in shares) 2,727,272 18,181,819                
Shares Issued, Price Per Share (in dollars per share) $ 2.75 $ 2.75                
Proceeds From Issuance of Common Stock, Net of Issuance Costs   $ 46,140,002                
Titan At The Market Offering Agreement 2025 [Member]                    
Stock Issued During Period, Shares, New Issues (in shares)         872,838   589,243      
Shares Issued, Price Per Share (in dollars per share)         $ 3.99   $ 3.77      
Stock Issued During Period, Value, New Issues         $ 3,479,179   $ 2,221,513      
Equity Offering, Maximum Amount               $ 100,000,000    
Equity Offering, Remaining Capacity Amount         $ 96,400,000