v3.26.1
Note 5 - Capital Stock (Details Textual)
 7 Months Ended 8 Months Ended 12 Months Ended 24 Months Ended 36 Months Ended
Jun. 06, 2025
USD ($)
$ / shares
shares
Jun. 04, 2025
USD ($)
$ / shares
shares
Aug. 23, 2024
USD ($)
$ / shares
shares
Mar. 30, 2023
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
$ / shares
shares
Dec. 31, 2024
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
Jun. 30, 2025
Jun. 05, 2025
$ / shares
shares
Apr. 17, 2025
USD ($)
Mar. 31, 2025
$ / shares
Oct. 06, 2023
$ / shares
Mar. 31, 2023
$ / shares
shares
Common Stock, Shares Authorized (in shares)         150,000,000 150,000,000 150,000,000 150,000,000   150,000,000 150,000,000            
Common Stock, Shares, Issued (in shares)         3,327,399 3,327,399 3,327,399 1,144,926   1,144,926 3,327,399            
Common Stock, Shares, Outstanding (in shares)         3,327,210 3,327,210 3,327,210 1,144,737   1,144,737 3,327,210            
Dividends, Preferred Stock | $             $ 32,000 $ 89,000                  
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares         $ 0.0001 $ 0.0001 $ 0.0001 $ 0.0001   $ 0.0001 $ 0.0001            
Warrant Adjustment, Deemed Dividend | $     $ 8,974,000       $ 0 $ 8,974,000                  
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.0001       $ 0.0001 $ 0.0001 $ 0.0001 $ 0.0001   $ 0.0001 $ 0.0001            
Treasury Stock, Common, Shares (in shares)         189 189 189 189   189 189            
Reverse Stock Split [Member]                                  
Stockholders' Equity Note, Stock Split, Conversion Ratio     40                            
Warrants Post Reverse Split [Member]                                  
Class of Warrant or Right, Outstanding (in shares) [1]         127,531 127,531 127,531       127,531            
Series F Preferred Stock [Member]                                  
Conversion of Stock, Shares Converted (in shares)             970 3,033                  
Dividends, Preferred Stock | $             $ 32,000 $ 89,000                  
Stock Issued During Period, Shares, New Issues (in shares)             575 1,648                  
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares       $ 68.4 $ 3.77 $ 3.77 $ 3.77 $ 11.17   $ 11.17 $ 3.77         $ 3.77  
Preferred Stock, Convertible, Floor Price (in dollars per share) | $ / shares                               $ 11.17  
Private Placement [Member] | Series F Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares)       6,550                          
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares       $ 0.0001                          
The 2025 Private Placement [Member]                                  
Legal Fees | $   $ 50,000                              
Conversion of Series F Preferred Stock to Common Stock [Member]                                  
Conversion of Stock, Shares Issued (in shares)             257,617 288,968 352,624 641,592 899,209            
Conversion of Stock, Shares Converted (in shares)             970 3,033                  
Dividends, Preferred Stock | $             $ 39,000 $ 191,000                  
Common Stock Warrants [Member]                                  
Stock Issued During Period, Shares, Warrants Exercised (in shares)             521,725 282,314                  
Class of Warrant or Right, Exercised (in shares)             521,725 282,314                  
Proceeds From Warrant Exercises, Net | $             $ 1,639,000 $ 903,000                  
Prefunded Warrants [Member]                                  
Stock Issued During Period, Shares, Warrants Exercised (in shares)             1,403,131                    
Class of Warrant or Right, Exercised (in shares)             1,403,131                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) 1,989,392                                
Class of Warrant or Right, Cash Fee, Percentage of Proceeds   5.00%                              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 3.77       $ 3.77 [2] $ 3.77 [2] $ 3.77 [2]       $ 3.77 [2]            
Warrants and Rights Outstanding, Term (Month)                       12 months          
Class of Warrant or Right, Outstanding (in shares)         586,261 586,261 586,261       586,261            
Proceeds From Warrant Exercises, Net | $ $ 6,888,000                                
Class of Warrant or Right, Cash Fee | $ 375,000                                
Proceeds from Issuance of Warrants | $ 7,500,000                                
Other Expenses | $ $ 237,000                                
Dividends per Warrant or Right (in dollars per share) | $ / shares $ 3.7699                                
Class of Warrant or Right, Maximum Beneficial Ownership 4.99%                                
Class of Warrant or Right, Maximum Beneficial Ownership, Election of Holder 9.99%                                
Percent of Stock Ownership, Warrant Transaction Threshold for Shares 50.00%                                
Preferred Warrants [Member]                                  
Class of Warrant or Right, Exercised (in shares)             575 1,648                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       32,750                          
Class of Warrant or Right, Cash Fee, Percentage of Proceeds             8.00%                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares         $ 975 $ 975 $ 975 $ 975   $ 975 $ 975       $ 975    
Warrants and Rights Outstanding, Term (Month)                             3 years    
Class of Warrant or Right, Outstanding (in shares)         30,527 30,527 30,527       30,527            
Proceeds from Warrant Exercises | $             $ 561,000 $ 1,607,000                  
Proceeds From Warrant Exercises, Net | $             516,000 1,478,000                  
Class of Warrant or Right, Cash Fee | $             45,000 $ 129,000                  
Investor Warrants [Member]                                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       95,764                          
Placement Agent Warrants [Member]                                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       7,663                         103,427
Class of Warrant or Right, Cash Fee, Percentage of Proceeds       8.00%                          
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares                                 $ 68.4
Class of Warrant or Right, Beneficial Ownership Percentage                                 4.99%
Class of Warrant or Right, Outstanding (in shares)     153,470                            
Warrant Adjustment, Deemed Dividend | $             $ 539,000                    
Placement Agent Warrants [Member] | Warrants Post Reverse Split [Member]                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares [1]         $ 68.4 $ 68.4 $ 68.4       $ 68.4            
Class of Warrant or Right, Outstanding (in shares) [1]         7,663 7,663 7,663       7,663            
Common Warrants Issued from Preferred Warrants [Member]                                  
Class of Warrant or Right, Exercised (in shares)             521,725 282,314                  
Class of Warrant or Right, Cash Fee, Percentage of Proceeds             8.00%                    
Class of Warrant or Right, Issued (in shares)             152,519 24,104                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares         $ 3.41 $ 3.41 $ 3.41       $ 3.41            
Warrants and Rights Outstanding, Term (Month)         5 years 5 years 5 years 5 years   5 years 5 years            
Class of Warrant or Right, Exercise Price of Warrants or Rights Exercised (in dollars per share) | $ / shares             $ 3.41 $ 3.41                  
Class of Warrant or Right, Outstanding (in shares)         1,749,527 1,749,527 1,749,527       1,749,527            
Proceeds from Warrant Exercises | $             $ 1,781,000 $ 964,000                  
Proceeds From Warrant Exercises, Net | $             1,639,000 887,000                  
Class of Warrant or Right, Cash Fee | $             $ 142,000 $ 77,000                  
Common Warrants Issued from Preferred Warrants [Member] | Warrants Post Reverse Split [Member]                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares               $ 68.4   $ 68.4              
Common Warrants [Member]                                  
Class of Warrant or Right, Exercised (in shares)             1,924,856 282,314                  
Class of Warrant or Right, Issued (in shares)             2,341,381 24,104                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares         $ 3.57 $ 3.57 $ 3.57 $ 3.41 $ 69.03 $ 3.41 $ 3.57            
Class of Warrant or Right, Exercise Price of Warrants or Rights Exercised (in dollars per share) | $ / shares     $ 3.41       $ 3.67 $ 3.41                  
Class of Warrant or Right, Outstanding (in shares)     2,401,047   2,688,728 2,688,728 2,688,728 2,272,203 103,453 2,272,203 2,688,728            
The 2025 Placement Agent Warrants [Member]                                  
Class of Warrant or Right, Exercised (in shares)         0                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)   99,470                              
Class of Warrant or Right, Cash Fee, Percentage of Proceeds             5.00%                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares   $ 4.71     $ 4.71 $ 4.71 $ 4.71       $ 4.71            
Class of Warrant or Right, Outstanding (in shares)         99,470 99,470 99,470       99,470            
Class of Warrant or Right, Cash Fee | $             $ 375,000                    
Legal Fees | $             $ 50,000                    
Advisor Warrants [Member]                                  
Class of Warrant or Right, Exercised (in shares)           0                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                         100,000        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares         $ 3.77 $ 3.77 $ 3.77       $ 3.77   $ 3.77        
Class of Warrant or Right, Outstanding (in shares)         100,000 100,000 100,000       100,000            
Class of Warrant or Right, Vesting Percent                         8.33%        
Class of Warrant or Right, Vesting During Period (in shares)           50,000                      
Class of Warrant or Right, Exercise Price of Warrants or Rights, Paid on Issuance (in dollars per share) | $ / shares         $ 3.7699 $ 3.7699 $ 3.7699       $ 3.7699            
Class of Warrant or Right, Exercise Price of Warrants or Rights, Paid on Exercise (in dollars per share) | $ / shares         $ 0.0001 $ 0.0001 $ 0.0001       $ 0.0001            
Stock Repurchase Program [Member]                                  
Share Repurchase Program, Authorized, Amount | $                           $ 500,000      
Share Repurchase Program, Remaining Authorized, Amount | $                           $ 500,000      
[1] Adjusted by the Reverse Split.
[2] The aggregate exercise price for the Pre-Funded Warrants is $3.77, of which $3.7699 was paid upon issuance of the warrants and $0.0001 payable upon exercise of the warrant. The exercise of these warrants will not result in material proceeds for the Company.