v3.25.2
Note 1 - Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual)
 1 Months Ended 3 Months Ended 12 Months Ended
Nov. 25, 2024
USD ($)
$ / shares
shares
Nov. 22, 2024
shares
Oct. 24, 2024
USD ($)
$ / shares
shares
Oct. 17, 2024
Jan. 26, 2024
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2024
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2024
USD ($)
$ / shares
shares
Feb. 28, 2025
USD ($)
$ / shares
Dec. 31, 2024
$ / shares
Dec. 31, 2023
$ / shares
Nov. 29, 2023
$ / shares
shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.001     $ 0.001 $ 0.001 $ 0.001 $ 0.001 $ 0.001 $ 0.001     $ 0.001
Common Stock, Shares Authorized (in shares) | shares     500,000,000     500,000,000 500,000,000 500,000,000 500,000,000 500,000,000       500,000,000
Adjustments to Additional Paid in Capital, Stock Split     $ 18,000,000                      
Net Income (Loss) Attributable to Parent             $ (11,410,000) $ (15,426,000) $ (11,410,000) $ (15,426,000)        
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation             (8,258,000) (6,648,000) (8,300,000) (6,600,000)        
Revenues                 0 0        
Retained Earnings (Accumulated Deficit)           $ (50,379,000) (50,379,000) (38,969,000) (50,379,000) (38,969,000)        
Working Capital (Deficit)           $ 7,900,000 7,900,000   7,900,000          
Stock Issued During Period, Value, New Issues                 103,000 2,840,000        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                         $ 0.02  
Payments for Initial Public Offering Issuance Costs             (0) 1,296,000   1,300,000        
Payments of Financing Costs             1,052,000 (0) 1,100,000          
Payments of Stock Issuance Costs             $ 176,000 (0) $ 200,000          
Property, Plant and Equipment, Useful Life (Year)           3 years 3 years   3 years          
Liability for Uncertainty in Income Taxes, Current           $ 0 $ 0 0 $ 0 0        
Advertising Expense                 $ 100,000 $ 1,800,000        
Number of Reportable Segments                 1          
Number of Operating Segments                 1          
Series A Warrants [Member]                            
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares 1                          
Number of Warrants Per Pre-funded Unit (in shares) | shares 1                          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 6.54                          
Warrants and Rights Outstanding, Term (Year) 5 years                          
Class of Warrants or Rights, Maximum Beneficial Ownership 4.99%                          
Series A Warrants [Member] | Underwriters [Member]                            
Equity Offering, Option, Maximum Warrants (in shares) | shares   206,422                        
Class of Warrant or Right, Issued During Period (in shares) | shares   156,809                        
Pre-funded Warrants [Member]                            
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares 1                          
Number of Warrants Per Pre-funded Unit (in shares) | shares 1                          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 0.001                          
Class of Warrants or Rights, Maximum Beneficial Ownership 4.99%                          
Pre-funded and Series A Warrants [Member]                            
Class of Warrants or Rights, Maximum Beneficial Ownership 4.99%                          
Equity-based Warrants [Member]                            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares         $ 125             $ 0.01    
Warrants and Rights Outstanding, Term (Year)         5 years                  
IPO [Member]                            
Stock Issued During Period, Shares, New Issues (in shares) | shares         111,962                  
Shares Issued, Price Per Share (in dollars per share) | $ / shares         $ 100                  
Stock Issued During Period, Value, New Issues         $ 11,200,000                  
Proceeds from Issuance of Common Stock         $ 9,800,000                  
Underwritten Public Offering [Member]                            
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.001                          
Number of Common Units Issued (in shares) | shares 458,691                          
Number of Shares Per Common Unit (in shares) | shares 1                          
Number of Warrants Per Common Unit (in shares) | shares 1                          
Number of Pre-funded Units Issued (in shares) | shares 917,596                          
Common Units Issued, Purchase Price (in dollars per share) | $ / shares $ 6.54                          
Pre-funded Units Issued, Purchase Price (in dollars per share) | $ / shares $ 6.539                          
Proceeds from Issuance or Sale of Equity $ 10,000,000                          
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs 1,500,000                          
Proceeds from Issuance or Sale of Equity, Net $ 9,000,000                          
Commission Percentage 8.00%                          
Payments of Stock Issuance Costs $ 1,000,000                          
Underwritten Public Offering [Member] | Non-cash Expenses [Member]                            
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs $ 500,000                          
Over-Allotment Option [Member] | Underwriters [Member]                            
Stock Issued During Period, Shares, New Issues (in shares) | shares   156,809                        
Equity Offering, Option Period (Day)   45 days                        
Equity Offering, Option, Maximum Shares (in shares) | shares   206,422                        
ATM Agreement [Member]                            
Stock Issued During Period, Shares, New Issues (in shares) | shares           800                
Proceeds from Issuance of Common Stock           $ 1,746 $ 2,000 $ 0            
Proceeds from Issuance or Sale of Equity           $ 1,746                
Equity Offering, Maximum Offering Amount                     $ 2,100,000      
ATM Agreement [Member] | Selling Agent [Member]                            
Commission Percentage                     3.00%      
Reverse Stock Split [Member]                            
Stockholders' Equity Note, Stock Split, Conversion Ratio     20                      
Reverse Stock Split [Member] | Minimum [Member]                            
Stockholders' Equity Note, Stock Split, Conversion Ratio       2                    
Reverse Stock Split [Member] | Maximum [Member]                            
Stockholders' Equity Note, Stock Split, Conversion Ratio       50