Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Additional information (Details)

v3.20.2
Stockholders' Equity - Additional information (Details)
1 Months Ended 2 Months Ended 12 Months Ended
Aug. 31, 2020
USD ($)
$ / shares
shares
Jul. 07, 2020
USD ($)
$ / shares
shares
Jul. 04, 2020
shares
Jul. 01, 2020
Jun. 11, 2020
USD ($)
$ / shares
shares
Jun. 04, 2020
May 26, 2020
USD ($)
$ / shares
shares
May 25, 2020
May 20, 2020
$ / shares
shares
Mar. 25, 2020
USD ($)
shares
Mar. 22, 2020
USD ($)
Dec. 17, 2019
Dec. 31, 2019
$ / shares
shares
Aug. 31, 2020
USD ($)
$ / shares
shares
Aug. 31, 2020
USD ($)
$ / shares
shares
Aug. 31, 2019
USD ($)
$ / shares
shares
Jul. 31, 2020
shares
Jan. 31, 2020
$ / shares
Aug. 31, 2018
shares
Preferred stock, per share | $ / shares $ 0.0001                         $ 0.0001 $ 0.0001 $ 0.0001   $ 0.0001  
Compensation expense | $                   $ 62,100,000         $ 1,526,000 $ 632,000      
Preferred options Exercised                                  
Fair value exercise price per share | $ / shares $ 0.0001                         $ 0.0001 $ 0.0001        
Proceeds from exercise of warrants                             (45,698)        
Proceeds from exercise of warrants | $                             $ 33,000 $ 660,000      
Exercise price (in dollars per share) | $ / shares                             $ 5.30 $ 43.60      
Number of shares outstanding, Beginning balance                                     33,719
Expected maturity period       10 years                     3 years 9 months 7 days        
Risk-free interest rate                             0.47%        
Volatility                             134.00%        
Shares conversion ratio               1   1   0.025     0.025        
Reverse split description                         On December 17, 2019, the Company effected a 1 for 40 reverse stock split. All common stock and common stock equivalents are presented retroactively to reflect the reverse split.            
Reverse stock split               1   1   0.025     0.025        
Debt amount qualified for conversion | $                     $ 1,047,000                
Common stock shares issued 16,902,146                         16,902,146 16,902,146 909,222      
Issued                             1,840,773        
Price per share | $ / shares $ 3.62                         $ 3.62 $ 3.62        
Amended March 2019 Notes Warrants [Member]                                      
Exercise price (in dollars per share) | $ / shares                             $ 40.00        
Issued                             53,273        
Warrants outstanding                         13,015   66,288        
Amended March 2019 Notes Warrants [Member] | Minimum                                      
Preferred stock, per share | $ / shares                         $ 40.00            
Amended March 2019 Notes Warrants [Member] | Maximum                                      
Preferred stock, per share | $ / shares                         $ 70            
May 2020 Common Warrant [Member]                                      
Warrants outstanding             111,108                        
Percentage on aggregate number of shares of common stock             5.00%                        
Price per share | $ / shares             $ 5.94                        
Percentage of warrants exercisable price on offering price             110.00%                        
May 2020 Common Warrant [Member] | Minimum                                      
Warrants term             6 months                        
May 2020 Common Warrant [Member] | Maximum                                      
Warrants term             5 years                        
June 2018 Notes Warrants [Member]                                      
Exercise price (in dollars per share) | $ / shares                             $ 40.00        
Warrants outstanding                             6,276        
Director [Member]                                      
Shares issued for services rendered                             856        
Shares issued for services | $                             $ 75,000        
Convertible Notes Payable [Member]                                      
Stock Issued During Period, Shares, Conversion of Convertible Securities                             628,353        
Shares issued in exchange of debt                             628,353        
Debt amount qualified for conversion | $                             $ 6,060,000        
Debt default interest | $ $ 178,000                         $ 178,000 $ 178,000        
Senior Convertible Notes Holder                                      
Shares issued for services rendered                             82,653        
Shares issued for services | $                             $ 552,000        
March 2019 Convertible Notes [Member]                                      
Amount of debt exchanged | $ $ 2,700,000                         $ 2,700,000 $ 2,700,000        
December 2019 [Member]                                      
Common stock shares issued 21,750                         21,750 21,750        
Value of shares issued | $ $ 200,000                         $ 200,000 $ 200,000        
Amount of debt exchanged | $ $ 2,900,000                         $ 2,900,000 $ 2,900,000        
Preferred Stock                                      
Preferred options Exercised                           294,490 12,794,220        
Preferred Stock Shares Options Outstanding and Exercisable 11,840,070                                    
Number option additionally available for grant to founder shareholders                             12,500,000        
Shares conversion ratio               1                      
Reverse stock split               1                      
Preferred Stock | May 2020 Common Warrant [Member]                                      
Price per share | $ / shares $ 2.52                         $ 2.52 $ 2.52        
Preferred Stock | Scott W Absher [Member]                                      
Preferred options Exercised     12,500,000                                
Number of options available for grant to founder shareholders     12,500,000                                
Stock Option | Scott W Absher [Member]                                      
Number of options available for grant to founder shareholders                                 50,000,000    
Stock Option | Preferred Stock                                      
Convertible preferred stock                   24,634,560                  
Common Share Units [Member] | May 2020 Common Warrant [Member]                                      
Number of Shares of Common Stock to be Purchased Accompanied by Common Warrant                 0.5                    
Units issued                 166,500                    
Common Share Units [Member] | Scott W Absher [Member]                                      
Shares issued upon conversion     12,500,000                                
Common shares lock up period           2 years                          
Warrant [Member]                                      
Exercise price (in dollars per share) | $ / shares                             $ 7.91        
Shares issued for services rendered                             6,275        
Shares issued for services | $                             $ 33,000        
Exercise price of warrants | $ / shares             $ 0.001                        
Warrants outstanding                             1,896,209        
Price per share | $ / shares             $ 5.399                        
Warrants to acquire shares of common stock             323,310                        
Underwritten Public Offering [Member]                                      
Shares of common stock issued                             2,222,160        
Gross proceeds from issuance of shares | $             $ 12,000,000                        
Underwritten Public Offering [Member] | May 2020 Common Warrant [Member]                                      
Shares of common stock issued                             2,472,500        
Offering costs | $             1,700,000                        
Warrants to acquire shares of common stock                 1,277,580                    
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]                                      
Shares of common stock issued                 1,898,850                    
Price per share | $ / shares                 $ 5.40                    
Exercise price of warrants | $ / shares $ 5.40                         $ 5.40 $ 5.40        
Underwritten Public Offering [Member] | Warrant [Member] | May 2020 Common Warrant [Member]                                      
Shares of common stock issued                 323,310                    
Price per share | $ / shares                 $ 5.399                    
Overallotment                                      
Gross proceeds from issuance of shares | $   $ 1,350,000                                  
Overallotment | May 2020 Common Warrant [Member]                                      
Shares of common stock issued         166,500                            
Gross proceeds from issuance of shares | $   $ 450,000                                  
Proceeds from issuance of units | $         $ 900,000                            
Units issued   83,840                                  
Price per share | $ / shares         $ 5.40                            
Overallotment | Common Share Units [Member] | May 2020 Common Warrant [Member]                                      
Price per share | $ / shares   $ 5.40