Post-effective amendment to a registration statement that is not immediately effective upon filing

STOCK-BASED COMPENSATION - Additional Information (Details)

v3.21.4
STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
12 Months Ended
Sep. 27, 2021
Jul. 30, 2021
Jan. 27, 2021
Oct. 14, 2020
Jul. 19, 2018
Jun. 18, 2013
Sep. 30, 2021
Sep. 30, 2020
Oct. 01, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, minimum             79.44%    
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, maximum             119.44%    
Share-based compensation arrangement by share-based payment award, fair value assumptions, risk free interest rate, minimum             0.13%    
Share-based compensation arrangement by share-based payment award, fair value assumptions, risk free interest rate, maximum             2.85%    
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected dividend rate             0.00%    
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected term             5 years 7 months 6 days    
Common Stock, Shares Authorized             800,000,000 800,000,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             7,375,000    
Share vested             18,814,908    
Non-Employee Restricted Shares [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Allocated share-based compensation expense             $ 105,000 $ 220,000  
Research and Development Expense [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Allocated share-based compensation expense             124,000 288,000  
General and Administrative Expense [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Allocated share-based compensation expense             $ 267,000 390,000  
Employees And Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             24,479,212    
Consultants [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             9,792,500    
Employees, Directors And Consultants [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Allocated share-based compensation expense             $ 391,000 $ 678,000  
Employees [Member] | Restricted Stock [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted   150,000              
2013 Stock Incentive Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Increase In Aggregate Number Of Shares                 3,000,000
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition             2 years 5 months 19 days    
Common Stock, Shares Authorized             31,114,256   31,114,256
Share-based compensation arrangement by share-based payment award, number of additional shares authorized           3,000,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             0 0  
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period             0    
2013 Stock Incentive Plan | Restricted Stock [Member] | Share-based Compensation Award, Tranche One [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         100.00%        
Plan 2013 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation arrangement by share-based payment award, number of shares available for grant             99,340    
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, total             $ 153,000    
Unrecognized compensation expense             $ 43,000    
Plan 2013 [Member] | Restricted Stock [Member] | Share-based Compensation Award, Tranche One [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share vested   50,000              
Plan 2013 [Member] | Restricted Stock [Member] | Share-based Compensation Award, Tranche Two [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share vested   50,000              
Plan 2013 [Member] | Restricted Stock [Member] | Share-based Compensation Award, Tranche Three [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share vested   50,000              
Plan 2013 [Member] | Employees And Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             5,300,000    
Plan 2013 [Member] | Consultants [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             2,075,000    
Plan 2013 [Member] | Consultants [Member] | Restricted Stock [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation arrangement by share-based payment award, award vesting period       90 days          
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted 300,000   500,000 50,000          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 0.0833%                
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Other         220,000        
Plan 2013 [Member] | Board of Directors And Management [Member] | Restricted Stock [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted         745,000