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Stock Issuance (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 08, 2020
USD ($)
shares
Feb. 28, 2020
USD ($)
$ / shares
shares
Feb. 10, 2020
USD ($)
shares
Oct. 31, 2020
USD ($)
shares
Mar. 31, 2020
USD ($)
$ / shares
shares
Jan. 31, 2020
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
$ / shares
shares
Jul. 31, 2020
USD ($)
shares
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
$ / shares
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
$ / shares
item
shares
Sep. 30, 2019
USD ($)
Mar. 16, 2020
USD ($)
$ / shares
shares
Stock Authorization And Issuance [Line Items]                              
Outstanding warrants | shares             13,900,000           13,900,000    
Sale of common stock             $ 230   $ 768 $ 2,850 $ 180 $ 60      
Estimated fair market value             2,000           $ 2,000    
Proceeds from warrants exercised                         1,200    
Change in fair value of contingent payment obligations             $ (105)       (68)   $ (3,487) $ 755  
Aspire Capital Fund, LLC [Member]                              
Stock Authorization And Issuance [Line Items]                              
warrants exercised | shares             1,070,000                
Proceeds from warrants exercised             $ 380                
Unsecured Debt [Member]                              
Stock Authorization And Issuance [Line Items]                              
Proceeds from sale of contingent payment rights             1,000                
Unsecured contingent payment obligation                 900            
Change in fair value of contingent payment obligations         $ 400                    
Aspire Capital [Member]                              
Stock Authorization And Issuance [Line Items]                              
Warrants to purchase common stock | shares   5,000,000                          
Exercise price per warrant | $ / shares   $ 0.74                          
Aspire Capital [Member] | Beneficial Owner [Member] | Aspire Capital Fund, LLC [Member]                              
Stock Authorization And Issuance [Line Items]                              
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners   9.99%                          
Aspire Capital, Amendment [Member]                              
Stock Authorization And Issuance [Line Items]                              
Warrants to purchase common stock | shares   5,000,000                          
Exercise price per warrant | $ / shares   $ 0.35                          
Consideration | $ / shares   $ 0.001                          
warrants exercised | shares   1,430,000                          
Proceeds from warrants exercised   $ 500                          
Issuance of stock to consultants, shares | shares   1,780,000                          
Common Stock [Member]                              
Stock Authorization And Issuance [Line Items]                              
Sale of common stock             $ 15   $ 43 $ 39 $ 6      
Issuance of stock to consultants, shares | shares 30,000             50,000              
Issuance of stocks to consultants $ 10             $ 30              
Issuance of stocks to consultants, future shares | shares               50,000              
Maximum [Member]                              
Stock Authorization And Issuance [Line Items]                              
Number of successive three-month periods per agreement | item                         3    
Maximum [Member] | Aspire Capital, Amendment [Member] | Beneficial Owner [Member] | Aspire Capital Fund, LLC [Member]                              
Stock Authorization And Issuance [Line Items]                              
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners   19.99%                          
Weighted Average [Member]                              
Stock Authorization And Issuance [Line Items]                              
Warrant term             3 years 3 months 18 days           3 years 3 months 18 days    
Exercise price per warrant | $ / shares             $ 0.44           $ 0.44    
Subsequent Event [Member] | Common Stock [Member]                              
Stock Authorization And Issuance [Line Items]                              
Issuance of stock to consultants, shares | shares       50,000                      
Issuance of stocks to consultants       $ 20                      
Private Placements With Accredited Investors [Member]                              
Stock Authorization And Issuance [Line Items]                              
Sale of common stock, number of shares | shares         2,571,432                    
Sale of common stock         $ 900 $ 200                  
Sale of stock price per share | $ / shares         $ 0.35         $ 0.35          
Private Placements With Accredited Investors B [Member]                              
Stock Authorization And Issuance [Line Items]                              
Sale of common stock, number of shares | shares           1,169,232                  
Sale of stock price per share | $ / shares           $ 0.13                  
Private Placements With Accredited Investors C [Member]                              
Stock Authorization And Issuance [Line Items]                              
Sale of common stock, number of shares | shares           166,667                  
Sale of stock price per share | $ / shares           $ 0.15                  
Chelsea Investor Relations [Member]                              
Stock Authorization And Issuance [Line Items]                              
Issuance of stock to consultants, shares | shares     500,000                        
Issuance of stocks to consultants     $ 150                        
Agreement term                         24 months    
Tailwinds Research Group LLC [Member]                              
Stock Authorization And Issuance [Line Items]                              
Warrants to purchase common stock | shares                             200,000
Exercise price per warrant | $ / shares                             $ 1.00
Estimated fair market value                             $ 60
Agreement term                         12 months    
Securities Purchase Agreements [Member]                              
Stock Authorization And Issuance [Line Items]                              
Sale of common stock, number of shares | shares             5,871,584                
Sale of common stock             $ 2,100                
Sale of stock price per share | $ / shares             $ 0.35           $ 0.35