v3.26.1
Note 7 - Stockholders' Equity (Details Textual) - USD ($)
 3 Months Ended 6 Months Ended 8 Months Ended 18 Months Ended
Jun. 01, 2026
May 28, 2026
May 28, 2026
May 27, 2026
May 14, 2026
Mar. 05, 2026
Mar. 05, 2026
Mar. 04, 2026
Jan. 09, 2026
Jan. 02, 2026
Nov. 05, 2025
Jun. 17, 2025
Jun. 09, 2025
Jun. 06, 2025
May 05, 2025
Apr. 25, 2025
Apr. 02, 2025
Mar. 17, 2025
Feb. 07, 2025
Jun. 26, 2022
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2026
Jan. 31, 2026
Dec. 31, 2025
Dec. 22, 2025
Nov. 24, 2025
Preferred Stock, Shares Authorized (in shares)                                         25,000,000     25,000,000   25,000,000 25,000,000   25,000,000    
Common Stock, Shares Authorized, Increase (in shares)                               6,500,000                              
Proceeds from Issuance of Convertible Preferred Stock                                               $ 7,250,000 $ 0            
Payments of Dividends                                               $ 904,634 (0)            
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                                         $ 0.001     $ 0.001   $ 0.001 $ 0.001   $ 0.001    
Accrued Expenses Settled With Warrants                                               $ 0 350,000            
Gain (Loss) on Debt Modification                                             $ 125,242   125,242            
Restricted Stock Units (RSUs) [Member]                                                              
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grant Date Fair Value                                         $ 827,642   219,105 827,642 219,105 $ 827,642 $ 827,642        
Share-Based Payment Arrangement, Expense                                         138,184   111,832 212,791 161,710            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount                                         $ 541,000   $ 93,000 $ 541,000 $ 93,000 $ 541,000 $ 541,000        
Conversion of Series F Preferred Stock into Common Stock [Member]                                                              
Preferred Stock, Convertible, Conversion Price (in dollars per share)                                         $ 0.8526   $ 1.1 $ 0.8526 $ 1.1 $ 0.8526 $ 0.8526        
Conversion of Stock, Shares Converted (in shares)                                               478 5,350            
Conversion of Stock, Shares Issued (in shares)                                               559,465 6,081,754            
Conversions of Series G Preferred Stock Into Common Stock [Member]                                                              
Preferred Stock, Convertible, Conversion Price (in dollars per share)                                         0.8526   1 $ 0.8526 $ 1 0.8526 0.8526        
Conversion of Stock, Shares Converted (in shares)                                               11,440 0            
Conversion of Stock, Shares Issued (in shares)                                               12,562,267 0            
Conversion of Convertible Note Into Common Stock [Member]                                                              
Debt Conversion, Converted Instrument, Shares Issued (in shares)                                               0 700,000            
Debt Conversion, Original Debt, Amount                                               $ 0 $ 770,000            
Debt Instrument, Convertible, Average Conversion Rate (in dollars per share)                                               $ 0 $ 1.1            
Series F Warrants [Member]                                                              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                                         $ 0.8526     $ 0.8526   0.8526 0.8526        
Stock Issued During Period, Shares, Warrant Exercises (in shares)                                         608,839     1,128,050              
Class of Warrant or Right, Exchanged (in shares)                                         1,942,118     2,613,914              
Class of Warrant or Right, Cashless Exercise Price (in dollars per share)                                         $ 0.8296     $ 0.8296   0.8296 0.8296        
Proceeds from Warrant Exercises, Net                                               $ 961,776              
Stock Issued During the Period, Shares, Warrant Exchanges (in shares)                                         608,839     967,645              
Stock Issued During Period, Shares, Warrant Exchange (in shares)                                 88,908                            
Gain (Loss) on Debt Modification                                 $ 125,362                            
Class of Warrant or Right, Exchanged, Weighted Average Exercise Price (in dollars per share)                                 $ 1.1                            
Cashless Series F Warrants [Member]                                                              
Class of Warrant or Right, Exchanged (in shares)                                               2,613,915              
Class of Warrant or Right, Cashless Exercise Price (in dollars per share)                                         $ 0.8526     $ 0.8526   $ 0.8526 $ 0.8526        
Stock Issued During the Period, Shares, Warrant Exchanges (in shares)                                               967,645              
Series B Warrants [Member]                                                              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                                             0.9639   0.9639            
Class of Warrant or Right, Cashless Exercise Price (in dollars per share)                                             $ 0.8294   $ 0.8294            
Proceeds from Warrant Exercises, Net                                             $ 1,619,683   $ 2,140,516            
Stock Issued During the Period, Shares, Warrant Exchanges (in shares)                                             1,952,839   2,220,688            
Accrued Expenses Settled With Warrants                                                 $ 350,000            
Proceeds From Warrant Settlement                                                 1,790,516            
Stock Issued During Period, Shares Value, Warrant Exchange                                 $ 108,468                            
Securities Purchase Agreement [Member] | Series F Convertible Preferred Stock [Member]                                                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                   586,441                                          
Alpha [Member] | Series F Warrants [Member]                                                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       513,031           586,441   797,067 838,364 418,831 602,846     415,420 450,390                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 0.9746           $ 0.8526   $ 1.2546 $ 1.1928 $ 1.1938 $ 0.8294     $ 1.2036 $ 2.2203                        
Warrants and Rights Outstanding, Term (Year)                   3 years     3 years         3 years 3 years                        
Series F Convertible Preferred Stock [Member]                                                              
Preferred Stock, Shares Authorized (in shares)                                       35,000 35,000     35,000   35,000 35,000   35,000    
Preferred Stock, Stated Value Per Share (in dollars per share)                                       $ 1,000 $ 1,000 $ 1,000   $ 1,000   $ 1,000 $ 1,000        
Dividends, Preferred Stock                                         $ 26,296   $ 52,038 $ 57,292 $ 119,688            
Dividends Payable                                         $ 101,190     $ 101,190   $ 101,190 $ 101,190   $ 948,532    
Preferred Stock, Dividend Rate, Percentage                                           5.00%                  
Payments of Dividends $ 50,955               $ 853,679                                            
Preferred Stock, Shares Outstanding (in shares)                                         1,885     1,885   1,885 1,885   4,122    
Preferred Stock, Capital Shares Reserved for Future Issuance (in shares)                                         0     0   0 0        
Series F Convertible Preferred Stock [Member] | Securities Purchase Agreement [Member]                                                              
Stock Issued During Period, Shares, New Issues (in shares)       500           500                                          
Proceeds from Issuance or Sale of Equity       $ 500,000           $ 500,000                                          
Preferred Stock, Convertible, Shares Issuable (in shares)       513,031           586,441                                          
Preferred Stock, Convertible, Conversion Price (in dollars per share)       $ 0.9746           $ 0.8526                                          
Series F Convertible Preferred Stock [Member] | Alpha [Member]                                                              
Stock Issued During Period, Shares, New Issues (in shares)                       1,000 1,000 500 500     500 1,000 10,000                      
Proceeds from Issuance or Sale of Equity                       $ 1,000,000 $ 1,000,000 $ 500,000 $ 500,000                                
Preferred Stock, Convertible, Conversion Price (in dollars per share)                       $ 1.2546 $ 1.1928 $ 1.1938 $ 0.8294     $ 1.2036 $ 2.2203                        
Proceeds from Issuance of Convertible Preferred Stock                                   $ 500,000 $ 1,000,000                        
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)                       797,067 838,364 418,831 602,846     415,420 450,390                        
Series F Convertible Preferred Stock [Member] | Alpha [Member] | Maximum [Member]                                                              
Equity Issuance, Maximum Additional Stated Value Issuable                                       $ 25,000,000                      
Series F Warrants [Member] | Securities Purchase Agreement [Member]                                                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       513,031                                                      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 0.9746           $ 0.8526                                          
Series G Convertible Preferred Stock [Member]                                                              
Preferred Stock, Shares Authorized (in shares)                                         100,000     100,000   100,000 100,000   100,000    
Preferred Stock, Stated Value Per Share (in dollars per share)                                         $ 1,000     $ 1,000   $ 1,000 $ 1,000        
Stock Issued During Period, Shares, New Issues (in shares)   3,000     2,000   2,000 250                               7,250   19,250 19,250        
Proceeds from Issuance or Sale of Equity     $ 5,000,000     $ 2,250,000                                                  
Preferred Stock, Convertible, Shares Issuable (in shares)                                         2,000,000     2,000,000   2,000,000 2,000,000        
Preferred Stock, Convertible, Conversion Price (in dollars per share)   $ 1 $ 1 $ 0.9746 $ 1 $ 1 $ 1                           $ 0     $ 0   $ 0 $ 0   $ 0    
Proceeds from Issuance of Convertible Preferred Stock                                                     $ 19,250,000        
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                                         $ 0.001     $ 0.001   $ 0.001 $ 0.001   $ 0.001    
Preferred Stock, Shares Outstanding (in shares)                                         2,000     2,000   2,000 2,000   6,190    
Preferred Stock, Capital Shares Reserved for Future Issuance (in shares)                                         80,750     80,750   80,750 80,750        
Conversion of Stock, Shares Converted (in shares)                                               11,440              
Series G Convertible Preferred Stock [Member] | Series G Certificate of Designation [Member]                                                              
Preferred Stock, Shares Authorized (in shares)                     100,000                                        
Preferred Stock, Stated Value Per Share (in dollars per share)                     $ 1,000                                        
Stock Issued During Period, Shares, New Issues (in shares)                     12,000                                        
Proceeds from Issuance or Sale of Equity                     $ 11,507,338                                        
Preferred Stock, Convertible, Conversion Price (in dollars per share)                     $ 1.23                                 $ 0.8526   $ 0.9615 $ 1.1347
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                     $ 0.001                                        
Preferred Stock, Shares Outstanding (in shares)                                                       6,190      
Series G Convertible Preferred Stock [Member] | Series G Certificate of Designation [Member] | Series G Warrants [Member]                                                              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                                                           $ 0.9615