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STOCK BASED COMPENSATION - Plans (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 9 Months Ended
Aug. 02, 2022
Aug. 01, 2022
May 31, 2019
Sep. 30, 2022
Sep. 30, 2021
Options          
Stock-based compensation          
Weighted Average Remaining Recognition Period (in years)       2 years 3 months 18 days 2 years 6 months
2019 Plan          
Stock-based compensation          
Shares reserved (in shares)     4,530,000    
New shares reserved (in shares)     1,618,841    
Reserved shares available from 2016 Plan (in shares)     2,911,159    
Increase in number of shares reserved and available for issuance (as a percent)     5.00%    
Option exercise price upon option repricing (in dollars per share) $ 1.05        
Options vested upon option repricing (in Shares) 1,797,517        
Options non-vested upon option repricing (in Shares) 1,380,917        
Incremental stock based compensation expense $ 1.4        
Weighted Average Remaining Recognition Period (in years) 2 years 4 months 24 days        
Number of shares available for future issuance       1,331,659  
2019 Plan | Maximum          
Stock-based compensation          
Option exercise price upon option repricing (in dollars per share)   $ 49.60      
2019 Plan | Minimum          
Stock-based compensation          
Option exercise price upon option repricing (in dollars per share)   $ 1.22      
2019 Plan | Options          
Stock-based compensation          
Maximum number of shares authorized for issuance     13,000,000    
Expiration period     10 years    
Vesting period     4 years    
2019 Plan | Vested stock option          
Stock-based compensation          
Incremental stock based compensation expense $ 0.9        
2019 Plan | Non-vested stock option          
Stock-based compensation          
Incremental stock based compensation expense $ 0.5