Annual report pursuant to Section 13 and 15(d)

Senior Convertible Notes Payable - Additional information (Details)

v3.21.2
Senior Convertible Notes Payable - Additional information (Details) - USD ($)
1 Months Ended 12 Months Ended
May 31, 2020
May 18, 2020
Mar. 24, 2020
Mar. 23, 2020
Mar. 22, 2020
Dec. 11, 2019
Dec. 06, 2019
Jan. 31, 2020
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
May 17, 2021
Gross principal                     $ 6,808,000  
Conversion price         $ 9.20     $ 12.20        
Value for debt conversion                   $ 200,000    
Amount of legal judgement on debt instrument               $ 500,000        
Amount of legal judgement on default interest               52,000        
Repayment of legal judgement on debt instrument               310,000        
Additional note discount               567,000        
Recovery from debt litigation settlement                   760,000    
Debt instrument, conversion original amount         $ 1,047,000              
Accrued default interest         $ 25,000              
Debt instrument converted amount shares issued         135,508              
Loss on pro rata portion of the unamortized note discount and deferred financing fees         $ 413,000              
Warrants exercise price                       $ 2.425
Expense related to extinguishment of convertible notes     $ 1,592,000             (1,592,000)    
Discount on the exchange dates     2,825,000                  
Amortization debt discount, debt issuance cost $ 2,419,000                 6,749,000    
Additional Loss On Conversion Of Debt                   57,000    
Amortization debt discount, debt issuance cost $ 2,419,000                 $ 6,749,000    
June 2018 Notes Due September 6, 2019 [Member]                        
Gross principal                 $ 1,466,000      
December 2018 Notes Due December 31, 2019 [Member]                        
Gross principal                 867,000      
March 2019 Notes Due September 12, 2020 [Member]                        
Gross principal                 $ 4,475,000      
March 2019 [Member]                        
Debt amount converted               $ 130,000        
December 2019 [Member]                        
Conversion price             $ 12.20          
Interest rate             18.00%          
Coupon rate             0.00%          
Percentage of principal increased             10.00%          
Debt Instrument, Convertible, Floor Price             $ 40          
Amortization of principal in cash premium             12.50%          
Description for event of default             Alternate conversion percentage is 75% if the alternate conversion is an alternate conversion event of default as a result of bankruptcy or default related to missed amortization payment, subject to a floor conversion price of $1.84 per share, 80% for all alternate event of default conversion, or 85% if such alternate conversion is an alternate optional conversion;Redemption at the option of the Company at 15% premium at any time.          
Exchange Agreement [Member]                        
Common stock issued for note exchange, shares               24,049        
Exchange Agreement [Member] | March 2019 [Member]                        
Principal outstanding             $ 2,445,000          
Conversion price               $ 12.20        
Principal Outstanding Combined Revised Balance             2,934,000          
Common stock issued for note exchange, shares               12,915        
Debt amount converted               $ 28,000        
Principal outstanding, Revised             $ 2,690,000          
Exchange Agreement [Member] | March 2019 Convertible Notes [Member]                        
Conversion price             $ 40.00          
Percentage of principal balance payable in cash             12.50%          
Additional consideration             $ 200,000          
Exchange Agreement [Member] | December 2019 [Member]                        
Conversion price           $ 12.20   $ 12.20        
Additional consideration               $ 200,000        
Principal Outstanding Combined Revised Balance           $ 2,934,000            
Common stock issued for note exchange, shares           21,750   24,049        
Value for debt conversion           $ 200,000            
Combined additional shares issued               $ 467,000        
Additional notes issued in exchange               267,000        
Debt Instrument, Amount Converted to Shares               293,000        
Debt amount converted to shares               293,000        
Exchange Agreement [Member] | June 2018 December 2018 And March 2019 Notes                        
Payment in cash for settlement with investors               $ 2,047,000        
Shares issued for settlement with investors               103,593        
Elimination of combined default penalties and default interest               $ 2,194,000        
Exchange Agreement [Member] | June 2018 And December 2018 Notes                        
Conversion price               $ 12.20        
Common stock issued for note exchange, shares               41,004        
Debt Instrument, Amount Converted to Shares               $ 500,000        
Additional shares issued for settlement of default               4,207        
Debt default interest               $ 51,000        
Debt amount converted to shares               $ 500,000        
Exchange Agreement [Member] | December 2018 Notes [Member]                        
Principal outstanding             $ 222,000          
Interest rate             10.00%          
Principal outstanding, Revised             $ 244,000          
Amendment and Exchange Agreements [Member]                        
Conversion price       $ 9.20                
Debt instrument, conversion original amount       $ 167,000                
Debt instrument converted amount shares issued       82,654                
Capitalization of accrued default interest       $ 59,000                
Warrants issued due to conversion of debt       162,950                
Warrants exercise price       $ 10.17                
Alpha Amendment and Exchange Agreement [Member]                        
Debt instrument, conversion original amount   $ 868,000   $ 723,000                
Debt instrument converted amount shares issued   94,298   66,123                
Capitalization of accrued default interest       $ 51,000                
Warrants issued due to conversion of debt       130,360                
Agreed additional notes       $ 145,000                
Osher Amendment and Exchange Agreement [Member]                        
Debt instrument, conversion original amount   $ 130,000   $ 108,000                
Debt instrument converted amount shares issued   14,023   16,531                
Capitalization of accrued default interest       $ 8,000                
Warrants issued due to conversion of debt       32,590                
Agreed additional notes       $ 22,000                
Exchange Agreement with CVI [Member]                        
Debt instrument, conversion original amount   $ 1,829,000 $ 1,829,000                  
Debt instrument converted amount shares issued   198,756 260,719