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Stock-Based Compensation - Restricted stock (Details)
3 Months Ended 6 Months Ended
Mar. 19, 2020
item
shares
Jan. 27, 2020
item
$ / shares
shares
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of principals | item 4          
Number of share issued | shares 7,244,739         2,680,390
Stock-based compensation expense | $     $ 304,539 $ 267,742 $ 664,016 $ 1,140,031
MTTR, LLC (“MTTR”)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of principals | item   4        
Number of share issued | shares   7,244,739        
Restricted Stock | MTTR, LLC (“MTTR”)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of principals | item   4        
Number of share issued | shares   7,244,739        
Term following the FDA approval   6 months        
Share repurchase price | $ / shares   $ 0.01        
Grant date fair value of share | $ / shares   $ 0.54        
Explicit service period   4 years 9 months 18 days        
Stock-based compensation expense | $     78,984   78,984  
Unamortized expense to be recognized of stock awards other than options | $     $ 3,833,176   $ 3,833,176  
Restricted Stock | MTTR, LLC (“MTTR”) | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Repurchase right lapses on shares (as a percent)   50.00%        
Restricted Stock | MTTR, LLC (“MTTR”) | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Repurchase right lapses on shares (as a percent)   100.00%