v3.20.4
Capital Stock - Additional Information (Detail)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 14, 2020
shares
Sep. 30, 2019
USD ($)
shares
Jan. 09, 2019
USD ($)
$ / shares
shares
Jan. 31, 2018
$ / shares
shares
Aug. 31, 2020
USD ($)
shares
Jun. 30, 2020
USD ($)
Director
FormerExecutive
shares
Mar. 31, 2020
USD ($)
ConvertibleNote
$ / shares
shares
Oct. 31, 2019
USD ($)
$ / shares
shares
Mar. 31, 2019
USD ($)
$ / shares
shares
Sep. 30, 2019
USD ($)
shares
Oct. 31, 2020
USD ($)
shares
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
shares
Feb. 01, 2020
USD ($)
Subsidiary Sale Of Stock [Line Items]                            
Warrants exercisable into shares of common stock | shares       57,029                    
Exercise price of warrants, per share | $ / shares       $ 91.50                    
Fair value assumption,expected term                     5 years      
(Loss) gain on debt conversion                     $ 13,642,000 $ (9,000)    
Aggregate proceeds from exercise of warrants                       1,154,000    
Promissory note principal amount   $ 24,200,000         $ 1,800,000     $ 24,200,000 $ 4,848,000 $ 24,200,000 $ 16,359,000 $ 16,359,000
Debt exchange conversion units | shares       57,029                    
Fair value assumption, risk-free interest rates, minimum                     0.20%      
Fair value assumption, risk-free interest rates, maximum                     0.30%      
Debt conversion, description             Company entered into an additional debt restructuring that resulted in the conversion of debt with an aggregate principal amount of $7,492,000 and accrued interest of $691,000 into common stock of the Company. The carrying value of the debt and related derivative liability at the time of extinguishment amounted to $8,341,000. The aggregate total of $8,183,000 was converted into 4,814,000 shares of common stock at $1.70 per share.              
Debt conversion, aggregate principal amount             $ 7,492,000 $ 7,800,000            
Debt conversion, accrued interest             691,000              
Debt aggregate conversion amount             8,183,000              
Number of outside directors | Director           2                
Number of former executives | FormerExecutive           3                
Reverse stock split one-for-ten                          
Stock split, conversion ratio 0.1                          
Board of Directors [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Common stock issued | shares                     295,000      
Common stock issued, value                     $ 390,000      
Common Stock [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Fair value assumption, expected volatility                     95.00%      
(Loss) gain on debt conversion             $ 6,472,000              
Preferred stock convertible into common stock | shares                   30,000        
Debt exchange conversion units | shares             4,814,000              
Debt exchange conversion price per unit | $ / shares             $ 1.70              
Debt and related derivative liability at the time of extinguishment             $ 8,341,000              
Conversion of preferred stock to common stock             $ 1,869,000              
Common stock issued | shares             1,068,000              
Stock repurchased | shares         70,000                  
Stock retired | shares         70,000                  
Stock repurchased and retired value         $ 28,000                  
Reverse stock split 1-for-10                          
Stock split, conversion ratio 0.1                          
Stock issued during period, shares, reverse stock splits | shares 2,000                          
Common Stock [Member] | Board of Directors [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Common stock issued | shares           80,000,000                
Common stock issued, value           $ 106,000                
Common Stock [Member] | Former Executive                            
Subsidiary Sale Of Stock [Line Items]                            
Common stock issued | shares           28,000,000                
Common stock issued, value           $ 27,000                
Common Stock [Member] | Other Expenses [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Common stock issued | shares                         1,040,000  
Common stock issued, value                         $ 415,000  
Common Stock [Member] | Simply Mac, Inc. [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Common stock issued | shares             1,040,000              
Settlement Agreement with Vendor [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Amount owed by vendor     $ 164,000                      
Issuance of restricted common shares | shares     9,345                      
Warrants exercisable into shares of common stock | shares     9,345           38,217          
Exercise price of warrants, per share | $ / shares     $ 16.40                      
Warrants exercisable beginning date     Jul. 09, 2019                      
Warrants exercisable expiration date     Jan. 09, 2022                      
Fair value of warrants estimated on the date of issuance     $ 59,000                      
Combined value of the stock and warrants     173,000                      
(Loss) gain on debt conversion     (9,000)                      
Strike price per share | $ / shares                 $ 30.20          
Aggregate proceeds from exercise of warrants                 $ 1,154,000          
Settlement Agreement with Vendor [Member] | Restricted Stock Award [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Fair value of restricted stock estimated on the date of issuance     $ 114,000,000                      
Fair value assumption, discount rate     25.00%                      
Fair value assumption, risk-free interest rates     2.52%                      
Fair value assumption,expected term     6 months                      
Fair value assumption, expected volatility     90.00%                      
Settlement Agreement with Vendor [Member] | Warrants [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Fair value assumption, risk-free interest rates     2.54%                      
Fair value assumption,expected term     3 years                      
Fair value assumption, expected volatility     90.00%                      
Settlement Agreement with Vendor [Member] | Common Stock [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Preferred stock convertible into common stock | shares   29,700                        
Exchange [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
(Loss) gain on debt conversion             $ 204,000              
Promissory note principal amount             434,000 7,852,000            
Promissory notes accrued interest             8,000 668,000            
Carrying value of extinguishment of debt               7,461,000            
Debt exchange conversion aggregate amount             $ 35,000 $ 8,520,000            
Warrants exercisable expiration period               3 years            
Number of convertible notes exchanged into common stock | ConvertibleNote             2              
Exchange [Member] | Warrants [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Exercise price of warrants, per share | $ / shares               $ 5.10            
Fair value of warrants estimated on the date of issuance               $ 3,713,000            
Fair value assumption,expected term               3 years            
Fair value assumption, expected volatility               70.00%            
Combined value of the stock and warrants               $ 12,177,000            
(Loss) gain on debt conversion               (4,048,000)            
Debt exchange conversion aggregate amount               $ 8,464,000            
Each unit comprised of common stock and warrant to purchase number of common share | shares               1,540,000            
Fair value assumption, risk-free interest rates, minimum               1.50%            
Fair value assumption, risk-free interest rates, maximum               1.70%            
Exchange [Member] | Common Stock [Member]                            
Subsidiary Sale Of Stock [Line Items]                            
Debt exchange conversion units | shares             86,800 1,671,000            
Debt exchange conversion price per unit | $ / shares             $ 5.10 $ 5.10