v3.26.1
Note 15 - Subsequent Events - 10-Q (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
May 18, 2026
May 14, 2026
May 12, 2026
May 06, 2026
May 02, 2026
Apr. 30, 2026
Apr. 30, 2025
Mar. 31, 2025
Dec. 31, 2022
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
May 05, 2026
Proceeds from Issuance of Debt                       $ 9,700,000    
Payments of Debt Issuance Costs                       1,488,000 $ (0)  
Repayments of Convertible Debt                   $ 7,379,000 $ (0) 25,000 $ (0)  
Stock Issued During Period, Shares, New Issues (in shares)             695,277 352,852            
Proceeds from Issuance or Sale of Equity                 $ 2,700,000 $ 2,100,000   $ 17,400,000    
Subsequent Event [Member]                            
Stock Issued During Period, Shares, New Issues (in shares)       16,666,667                    
Subsequent Event [Member] | May 2026 Public Offering [Member]                            
Extinguishment of Debt, Amount       $ 1,000,000                    
Units Issued, Price Per Share (in dollars per share)       $ 0.3                    
Proceeds from Issuance or Sale of Equity       $ 5                    
Proceeds from Issuance or Sale of Equity, Net       3,060,000.00                    
Payments of Stock Issuance Costs       $ 940,000                    
Subsequent Event [Member] | Existing Warrants [Member]                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                           7,009,346
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                           $ 2.675
Subsequent Event [Member] | New Warrants [Member]                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                           10,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                           $ 0.35
Warrants and Rights Outstanding, Term (Year)                           5 years
Subsequent Event [Member] | Series A Common Warrants [Member]                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       16,666,667                    
Subsequent Event [Member] | Series B Common Warrants [Member]                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       16,666,667                    
Subsequent Event [Member] | Pre-funded Warrant [Member]                            
Class of Warrant or Right, Exercised in Period (in shares)     1,000,000                      
Subsequent Event [Member] | Conversion of Senior Secured Notes into Common Stock [Member]                            
Debt Conversion, Converted Instrument, Shares Issued (in shares) 5,810,093       1,038,281 1,264,543                
Debt Conversion, Converted Instrument, Shares Issued, Price Per Share (in dollars per share) $ 0.1506       $ 0.1907 $ 0.3954                
Debt Conversion, Original Debt, Amount $ 875,000       $ 200,000 $ 500,000                
Convertible Note Payable 2026 [Member] | Subsequent Event [Member]                            
Debt Instrument, Face Amount           600,000                
Debt Instrument, Periodic Payment           100,000                
Debt Instrument, Convertible, One Time Interest Charge           70,000.00                
Proceeds from Issuance of Debt           500,000                
Payments of Debt Issuance Costs           70,000.00                
Debt Instrument, Convertible, Add on Value, Each Conversion           $ 1,750,000                
Convertible Debt Instrument, Conversion Price Equal to Lowest Price per Share           75.00%                
Debt Conversion, Converted Instrument, Shares Issued (in shares)           80,128                
Repayments of Convertible Debt   $ 600,000                        
Senior Secured Note [Member] | Subsequent Event [Member]                            
Repayments of Convertible Debt   1,700,000                        
Extinguishment of Debt, Amount   $ 1,000,000