Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Additional information (Details)

v3.21.2
Stockholders' Equity - Additional information (Details)
4 Months Ended 12 Months Ended
Sep. 03, 2021
USD ($)
Aug. 13, 2021
$ / shares
May 17, 2021
USD ($)
$ / shares
shares
Oct. 14, 2020
USD ($)
Oct. 08, 2020
USD ($)
$ / shares
shares
Jul. 07, 2020
USD ($)
$ / shares
shares
Jul. 01, 2020
shares
Jun. 11, 2020
USD ($)
$ / shares
shares
Jun. 04, 2020
$ / shares
shares
May 26, 2020
USD ($)
$ / shares
shares
May 25, 2020
May 20, 2020
$ / shares
shares
Mar. 25, 2020
USD ($)
shares
Jan. 04, 2020
$ / shares
shares
Nov. 30, 2020
shares
Aug. 31, 2021
USD ($)
$ / shares
shares
Aug. 31, 2020
USD ($)
$ / shares
shares
Aug. 22, 2021
$ / shares
Jun. 04, 2021
shares
Jan. 31, 2020
$ / shares
Shares conversion ratio                         1              
Preferred stock, per share | $ / shares                               $ 0.0001 $ 0.0001     $ 0.0001
Compensation expense | $                         $ 62,100,000     $ 1,594,000 $ 1,526,000      
Expected maturity period             10 years                 3 years 9 months 7 days        
Risk-free interest rate                               0.47%        
Volatility                               134.00%        
Fair value exercise price per share | $ / shares                               $ 0.0001        
Price per share | $ / shares                               $ 3.62   $ 0.75    
Number of options available for grant to founder shareholders                                     3,000,000  
Exercise price of warrants | $ / shares     $ 2.425                                  
Gross proceeds from issuance of shares | $     $ 12,000,000                                  
Placement agent fees and costs | $ $ 900,000                             $ 789,000        
Percentage on aggregate number of shares of common stock     7.00%                                  
Percentage of warrants exercisable price on offering price     5.00%                                  
Common stock shares issued                               25,863,099 16,902,146      
Share options, cancelled during the year                               148,959        
Granted             1,235,159                 840,000 1,506,096      
Amended March 2019 Notes Warrants [Member]                                        
Warrants Outstanding                               66,288        
May 2020 Common Warrant [Member]                                        
Price per share | $ / shares                   $ 5.94                    
Warrants Outstanding                   111,108                    
Percentage on aggregate number of shares of common stock                   5.00%                    
Percentage of warrants exercisable price on offering price                   110.00%                    
May 2020 Common Warrant [Member] | Minimum [Member]                                        
Warrants term                   6 months                    
May 2020 Common Warrant [Member] | Maximum                                        
Warrants term                   5 years                    
June 2018 Notes Warrants [Member]                                        
Warrants Outstanding                               6,276        
October 2020 Common Warrants                                        
Price per share | $ / shares         $ 3.300                              
Warrants Outstanding         200,000                     2,300,000        
Percentage on aggregate number of shares of common stock         5.00%                              
Percentage of warrants exercisable price on offering price         110.00%                              
October 2020 Common Warrants | Minimum [Member]                                        
Warrants term         5 years                              
May 2021 Underwriter Warrants                                        
Warrants Outstanding                               247,423        
May 2021 Common Warrants                                        
Price per share | $ / shares     $ 2.425                                  
Placement agent fees and costs | $ $ 940,000                                      
Warrants Outstanding                               4,948,453        
Shares issued upon exercise of warrants     2,320,000                                  
Common stock shares issued                               4,948,453        
May 2021 Common Warrants | securities purchase agreement                                        
Price per share | $ / shares                               $ 2.425        
Shares of common stock issued                               2,320,000        
May 2021 Prefunded Warrants                                        
Exercise price of warrants | $ / shares     $ 0.0001                                  
May 2021 Prefunded Warrants | securities purchase agreement                                        
Price per share | $ / shares                               $ 2.4249        
Shares of common stock issued                               2,628,453        
Amanda Murphy                                        
Common stock issued for services rendered, shares                                 856      
Common stock issued for services | $                                 $ 75,000      
September 2016 grant | Maximum                                        
Share options, cancelled during the year                           11,790,000            
Convertible Notes Payable [Member]                                        
Stock Issued During Period, Shares, Conversion of Convertible Securities                                 628,353      
Preferred Stock                                        
Shares conversion ratio                     1                  
Preferred options Exercised                                 12,794,220      
Preferred Stock | May 2020 Common Warrant [Member]                                        
Price per share | $ / shares                               $ 2.52        
Preferred Stock | Scott W Absher                                        
Shares conversion ratio                           1            
Preferred stock, per share | $ / shares   $ 0.0001             $ 0.0001                      
Preferred options Exercised                 12,500,000           294,490          
Number of options available for grant to founder shareholders                 12,500,000                      
Share options additional grants during the period                           12,500,000            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term   24 months                                    
Percentage of sale or distribution of company assets or earning power.   50                                    
Preferred Stock | Scott W Absher | Maximum                                        
Granted                           25,000,000            
Preferred Stock | September 2016 grant | Vensure asset sale                                        
Preferred stock options, unexercised                           11,827,570            
Stock Option | Preferred Stock                                        
Convertible preferred stock                         24,634,560              
Common Share Units [Member] | May 2020 Common Warrant [Member]                                        
Units issued                       166,500                
Number of Shares of Common Stock to be Purchased Accompanied by Common Warrant                       0.5                
Common Share Units [Member] | October 2020 Common Warrants                                        
Price per share | $ / shares                               $ 3.00        
Shares of common stock issued                               4,000,000        
Common Share Units [Member] | Scott W Absher                                        
Price per share | $ / shares                           $ 1,250            
Shares issued upon conversion                 12,500,000           294,490          
Common shares lock up period                 24 months           6 months          
Shares that are freely tradeable                           294,490            
Warrants [Member]                                        
Warrants to acquire shares of common stock                   323,310                    
Warrants Outstanding                               9,592,085        
Warrants [Member] | May 2021 Common Warrants                                        
Price per share | $ / shares     $ 2.4249                                  
Shares issued upon exercise of warrants     2,628,453                                  
Warrants [Member] | May 2021 Prefunded Warrants                                        
Price per share | $ / shares     $ 2.425                                  
Exercise price of warrants | $ / shares     $ 2.6675                                  
Shares issued upon exercise of warrants     2,628,453                                  
Common Stock | May 2021 Common Warrants                                        
Price per share | $ / shares     $ 0.0001                                  
Shares of common stock issued     2,320,000                                  
Common Stock | May 2021 Prefunded Warrants                                        
Price per share | $ / shares     $ 2.4249                                  
Underwritten Public Offering [Member] | May 2020 Common Warrant [Member]                                        
Shares of common stock issued                                 2,472,500      
Warrants to acquire shares of common stock                       1,277,580                
Placement agent fees and costs | $                   $ 1,700,000                    
Underwritten Public Offering [Member] | October 2020 Common Warrants                                        
Price per share | $ / shares         $ 3.00                              
Exercise price of warrants | $ / shares         $ 3.30                              
Gross proceeds from issuance of shares | $         $ 12,000,000                              
Placement agent fees and costs | $       $ 1,300,000                                
Underwritten Public Offering [Member] | Common Share Units [Member]                                        
Gross proceeds from issuance of shares | $                   $ 12,000,000                    
Underwritten Public Offering [Member] | Common Share Units [Member] | May 2020 Common Warrant [Member]                                        
Price per share | $ / shares                       $ 5.40                
Shares of common stock issued                       1,898,850                
Exercise price of warrants | $ / shares                               $ 5.40 $ 5.40      
Underwritten Public Offering [Member] | Warrants [Member] | May 2020 Common Warrant [Member]                                        
Price per share | $ / shares                       $ 5.399                
Shares of common stock issued                       323,310                
Underwritten Public Offering [Member] | Warrants [Member] | October 2020 Common Warrants                                        
Shares of common stock issued         2,300,000                     2,300,000        
Underwritten Public Offering [Member] | Common Stock | October 2020 Common Warrants                                        
Shares of common stock issued         4,000,000                              
Number of Shares of Common Stock to be Purchased Accompanied by Common Warrant         0.5                              
Overallotment | May 2020 Common Warrant [Member]                                        
Price per share | $ / shares               $ 5.40                        
Shares of common stock issued               166,500                        
Units issued           83,840                            
Gross proceeds from issuance of shares | $           $ 450,000                            
Proceeds from issuance of units | $               $ 900,000                        
Overallotment | October 2020 Common Warrants                                        
Shares of common stock issued         300,000                              
Overallotment | Common Share Units [Member] | May 2020 Common Warrant [Member]                                        
Price per share | $ / shares           $ 5.40