Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stockholders' Equity and Equity-linked Instruments - Schedule of Preferred Stock (Details)

v3.23.2
Note 6 - Stockholders' Equity and Equity-linked Instruments - Schedule of Preferred Stock (Details) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended
May 26, 2023
May 05, 2023
Apr. 28, 2023
Apr. 20, 2023
Apr. 19, 2023
Jan. 31, 2023
Dec. 22, 2022
Nov. 30, 2022
Nov. 28, 2022
Nov. 22, 2022
Jun. 30, 2023
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 29, 2023
Jun. 26, 2023
Jun. 21, 2023
Jun. 14, 2023
Jun. 13, 2023
Mar. 31, 2023
Net Proceeds                       $ 12,070,000 $ 0              
Placement Agent Warrants With Series A Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares)                   1,253,000                    
Placement Agent Warrants With Series AA Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares)         2,285,000                              
Placement Agent Warrants With Series A-2 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares) [1]                 283,000                      
Placement Agent Warrants With Series A-3 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares)               375,000                        
Placement Agent Warrants With Series AA-2 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares)       278,000                                
Placement Agent Warrants With Series A-4 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares)             738,000                          
Placement Agent Warrants With Series A5 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares)           601,000                            
Placement Agent Warrants With Series AA-3 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares) [2]     313,000                                  
Placement Agent Warrants With Series AA-4 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares)   320,000                                    
Placement Agent Warrants With Series A A5 Preferred Stock [Member]                                        
Placement Agent Warrants (1) (in shares) 150,000                                      
Series AA Convertible Preferred Stock [Member]                                        
Conversion Price (in dollars per share)         $ 0.4715                              
Stock Issued During Period, Shares, New Issues (in shares)         7,680                              
Gross Proceeds         $ 7,680,000                              
Fees         966,000                              
Net Proceeds         $ 6,714,000                              
Conversion Shares (in shares)         16,288,000                              
Series A Preferred Stock [Member]                                        
Conversion Price (in dollars per share)                                     $ 0.6200  
Conversion Price (in dollars per share)                   $ 0.6200                    
Stock Issued During Period, Shares, New Issues (in shares)                   5,359                    
Gross Proceeds                   $ 5,359,000                    
Fees                   752,000                    
Net Proceeds                   $ 4,607,000                    
Conversion Shares (in shares)                   8,644,000                   3,500,000
Series A-2 Preferred Stock [Member]                                        
Conversion Price (in dollars per share)                                   $ 0.6646    
Conversion Price (in dollars per share) [1]                 $ 0.6646                      
Stock Issued During Period, Shares, New Issues (in shares) [1]                 1,297                      
Gross Proceeds [1]                 $ 1,297,000                      
Fees [1]                 169,000                      
Net Proceeds [1]                 $ 1,128,000                      
Conversion Shares (in shares) [1]                 1,952,000                      
Series AA-2 Convertible Preferred Stock [Member]                                        
Conversion Price (in dollars per share)   $ 0.4642   $ 0.5215                                
Stock Issued During Period, Shares, New Issues (in shares)   1,026   1,500                                
Gross Proceeds   $ 1,026,000   $ 1,500,000                                
Fees   133,000   130,000                                
Net Proceeds   $ 893,000   $ 1,370,000                                
Conversion Shares (in shares)   2,210,000   2,876,000                                
Series A-3 Preferred Stock [Member]                                        
Conversion Price (in dollars per share)                                 $ 0.6704      
Conversion Price (in dollars per share)               $ 0.6704                        
Stock Issued During Period, Shares, New Issues (in shares)               1,733                        
Gross Proceeds               $ 1,733,000                        
Fees               225,000                        
Net Proceeds               $ 1,508,000                        
Conversion Shares (in shares)               2,585,000                        
Series A-4 Preferred Stock [Member]                                        
Conversion Price (in dollars per share)                               $ 0.3801        
Conversion Price (in dollars per share)             $ 0.3801                          
Stock Issued During Period, Shares, New Issues (in shares)             1,934                          
Gross Proceeds             $ 1,934,000                          
Fees             251,000                          
Net Proceeds             $ 1,683,000                          
Conversion Shares (in shares)             5,088,000                          
Series AA-3 Convertible Preferred Stock [Member]                                        
Conversion Price (in dollars per share) [2]     $ 0.4750                                  
Stock Issued During Period, Shares, New Issues (in shares) [2]     1,025                                  
Gross Proceeds [2]     $ 1,025,000                                  
Fees [2]     133,000                                  
Net Proceeds [2]     $ 892,000                                  
Conversion Shares (in shares) [2]     2,158,000                                  
Series A-5 Preferred Stock [Member]                                        
Conversion Price (in dollars per share)                             $ 0.5546          
Conversion Price (in dollars per share)           $ 0.5546                            
Stock Issued During Period, Shares, New Issues (in shares)           2,299                            
Gross Proceeds           $ 2,299,000                            
Fees           299,000                            
Net Proceeds           $ 2,000,000                            
Conversion Shares (in shares)           4,145,000                            
Series A Preferred Offerings [Member]                                        
Stock Issued During Period, Shares, New Issues (in shares)                           12,622            
Gross Proceeds                           $ 12,622,000            
Fees                           1,696,000            
Net Proceeds                           $ 10,926,000            
Conversion Shares (in shares)                     22,414,000 22,414,000   22,414,000            
Placement Agent Warrants (1) (in shares)                           3,250,000            
Series AA-5 Convertible Preferred Stock [Member]                                        
Conversion Price (in dollars per share) $ 0.5300                                      
Stock Issued During Period, Shares, New Issues (in shares) 550                                      
Gross Proceeds $ 550,000                                      
Fees 72,000                                      
Net Proceeds $ 479,000                                      
Conversion Shares (in shares) 1,038,000                                      
Series AA, AA-2, AA-3, and AA-4 Convertible Preferred Stock [Member]                                        
Stock Issued During Period, Shares, New Issues (in shares)                     11,781                  
Gross Proceeds                     $ 11,781,000                  
Fees                     1,434,000                  
Net Proceeds                     $ 10,348,000                  
Conversion Shares (in shares)                     24,570,000 24,570,000   24,570,000            
Placement Agent Warrants (1) (in shares)                     3,346,000                  
[1] Issued on May 26, 2023, effective as of the applicable closing date, upon final closing of the Series A Preferred Stock offering
[2] Issued on May 26, 2023, effective as of the applicable closing date, upon final closing of the Series AA Preferred Stock offering.