Quarterly report pursuant to Section 13 or 15(d)

Senior Convertible Notes Payable - Additional information (Details)

v3.20.2
Senior Convertible Notes Payable - Additional information (Details) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 24, 2020
Mar. 23, 2020
Dec. 11, 2019
Dec. 06, 2019
Aug. 31, 2019
Mar. 22, 2020
Jan. 31, 2020
May 31, 2020
May 18, 2020
May 31, 2020
Feb. 29, 2020
May 31, 2019
May 31, 2020
May 31, 2019
Aug. 31, 2019
Amortized Interest expense                   $ 555,000   $ 722,000 $ 2,210,000 $ 1,433,000  
Gross principal         $ 6,808,000                   $ 6,808,000
Conversion price           $ 9.20 $ 12.20                
Value for debt conversion                         200,000    
Maturity date       Apr. 01, 2022                      
Additional note discount             $ 567,000                
Expense related to extinguishment of convertible notes $ 1,592,000 $ 1,592,000               (1,592,000)   $ 0 (1,592,000) 0  
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 Loss On Conversion Of Debt                   $ (57,000)          
Recovery from debt litigation settlement                     $ 760,000   760,000    
Accrued interest payable         $ 1,800,000                   $ 1,800,000
Debt instrument, conversion original amount           $ 1,047,000                  
Debt instrument converted amount shares issued           135,508                  
Accrued default interest           $ 25,000                  
Loss on pro rata portion of the unamortized note discount and deferred financing fees           $ 413,000                  
Discount on the exchange dates $ 2,825,000 $ 2,825,000                     (2,825,000)    
Amortization debt discount, debt issuance cost               $ 2,419,000         6,749,000 $ 3,599,000  
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    
December 2019 [Member]                              
Conversion price       $ 12.20                      
Percentage of principal increased       10.00%                      
Coupon rate       0.00%                      
Interest rate       18.00%                      
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]                              
Shares issued for debt conversion             24,049                
Exchange Agreement [Member] | March 2019 [Member]                              
Principal outstanding       $ 2,445,000                      
Conversion price             $ 12.20                
Principal outstanding, Revised       2,690,000                      
Principal Outstanding Combined Revised Balance       2,934,000                      
Shares issued for debt conversion             12,915                
Debt default interest             $ 28,000                
Debt amount converted             $ 130,000                
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                        
Shares issued for debt conversion     21,750       24,049                
Value for debt conversion     $ 200,000                        
Maximum percentage for revised combined principal could be converted     $ 10                        
Amount converted to shares             $ 293,000                
Combined additional shares issued             467,000                
Additional notes issued in exchange             267,000                
Debt amount converted to shares             293,000                
Debt amount converted             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                
Shares issued for debt conversion             41,004                
Amount converted to shares             $ 500,000                
Debt amount converted to shares             $ 500,000                
Additional shares issued for settlement of default             4,207                
Debt default interest             $ 51,000                
Exchange Agreement [Member] | December 2018 Notes [Member]                              
Principal outstanding       $ 222,000                      
Percentage of principal increased       10.00%                      
Principal outstanding, Revised       $ 244,000                      
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   $ 723,000             $ 868,000            
Debt instrument converted amount shares issued   66,123             94,298            
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   $ 108,000             $ 130,000            
Debt instrument converted amount shares issued   16,531             14,023            
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]                              
Conversion price $ 9.20                            
Debt instrument, conversion original amount $ 1,829,000               $ 1,829,000            
Debt instrument converted amount shares issued 260,719               198,756