Quarterly report pursuant to Section 13 or 15(d)

Equity Awards and Warrants - Private Placement of Shares of Common Stock and Warrants (Details)

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Equity Awards and Warrants - Private Placement of Shares of Common Stock and Warrants (Details) - USD ($)
 1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Aug. 31, 2023
Jul. 31, 2023
Apr. 30, 2024
Feb. 29, 2024
Nov. 30, 2023
Sep. 30, 2023
Aug. 31, 2022
Feb. 29, 2024
Feb. 28, 2023
Oct. 23, 2023
Jun. 30, 2023
Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share       $ 0.306       $ 0.50         $ 0.306 $ 0.50
Exercise of warrants for cash, shares                   3,000,000.0        
Exercise of warrants for cash                   $ 300,000        
Common stock warrants to purchase shares               21,500,000            
Purchase price per unit                       $ 0.16    
Cash and non-cash issuance costs capitalized       $ 900,000                    
Loss on extinguishment of convertible notes       2.4   $ (1,550,000)       (6,040,000)        
Term of warrants               5 years            
Warrant covering common stock shares purchased, percentage   13.00%                        
Placement agent fees and expenses   $ 400,000           $ 400,000            
Percentage of gross proceeds               12.00%            
Stock issued for private offerings             $ 6,328,000              
Issuance of common stock for principal of convertible notes                   4,750,000 $ 2,000,000      
Proceeds from Warrant Exercises                   $ 300,000 $ 264,000      
Employees                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Shares issued during the period new issues shares                   153,027 522,382      
Share-Based Payment Arrangement, Grantee Status [Extensible Enumeration]                   us-gaap:ShareBasedPaymentArrangementNonemployeeMember us-gaap:ShareBasedPaymentArrangementNonemployeeMember      
Consultants                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stocks issued for severance payment                   1,499,951 1,136,805      
Share-Based Payment Arrangement, Grantee Status [Extensible Enumeration]                   us-gaap:ShareBasedPaymentArrangementNonemployeeMember us-gaap:ShareBasedPaymentArrangementNonemployeeMember      
Placement agent notes                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Loss on extinguishment of convertible notes   $ 1,600,000   (2,100,000)                    
Term of warrants   10 years         10 years              
Third Private Placement [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share   $ 0.21                        
Common stock warrants to purchase shares   18,200,000                        
Term of warrants   5 years                        
Non cash discount on convertible notes due to exercise price modification           $ 100,000                
Third Private Placement [Member] | Placement agent notes                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Purchase price as of lower intraday volume weighted average price   $ 0.19                        
Number of common shares in a fixed combination issue of shares   1                        
Number of warrants in a fixed combination issue of securities   1                        
Number of shares   1                        
Closing share price (as percentage)   90.00%                        
Private Equity Offering                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued for private offerings                 $ 17,544,000          
Accredited Investors                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share   $ 0.17                        
Common stock warrants to purchase shares   18,200,000           21,500,000            
Stock issued for private offerings   $ 2,700,000           $ 3,000,000.0            
Accredited Investors | Placement agent notes                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Issuance of common stock for principal of convertible notes   $ 1,000,000.0   $ 2,300,000                    
Warrants issued in debt conversion   7,200,000   14,300,000                    
Allotment to placement agent                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share   $ 0.17           $ 0.16            
Common stock warrants to purchase shares   2,500,000           3,200,000            
Term of warrants   10 years           10 years            
Warrant covering common stock shares purchased, percentage   15.00%                        
Placement agent fees and expenses   $ 5,000 $ 5,000,000 $ 5,000,000                    
Percentage of gross proceeds               15.00%            
July Private Placement | Placement agent notes                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Purchase price per unit       $ 0.16                    
Number of common shares in a fixed combination issue of shares       1                    
Number of warrants in a fixed combination issue of securities       1                    
Number of shares       1                    
Closing share price (as percentage)       90.00%                    
Maximum | Third Private Placement [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share             $ 0.35              
Minimum                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share           $ 0.10       $ 0.10        
Minimum | Third Private Placement [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share           $ 0.21       $ 0.21        
Subsequent Event | Third Private Placement [Member] | Placement agent notes                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Exercise price of share $ 0.21                          
Exercise price of stock warrant combo, per share $ 0.17                          
Shares issued during the period new issues shares 16,900,000                          
Consideration received from sale of stock $ 2,500,000       $ 2,500,000                  
Common stock warrants to purchase shares 16,900,000                          
Term of warrants 5 years                          
Number of common shares in a fixed combination issue of shares 1                          
Number of warrants in a fixed combination issue of securities 1                          
Number of shares 1                          
Proceeds, net of issuance costs $ 2,800,000                          
Closing share price (as percentage) 90.00%