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DEBT - Additional Information (Details) - USD ($)
Jun. 30, 2022
Jun. 01, 2022
Sep. 30, 2022
Sep. 30, 2020
Debt Instrument [Line Items]        
Unamortized debt discount and issuance costs     $ 747,000  
Hercules and Silicon Valley Bank [Member]        
Debt Instrument [Line Items]        
Maximum borrowing capacity under term loan $ 125,000,000     $ 75,000,000
Principal amount outstanding under term loan     50,000,000  
Carrying value of term loan, net     50,758,000  
Unamortized debt discount and issuance costs     747,000  
Accrued end of term charge     $ 1,505,000  
Hercules and Silicon Valley Bank [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Available remaining loan principal under second amendment 75,000,000      
Debt discount under second amendment 100,000      
Debt issuance costs $ 75,000      
Prepayment charge (as a percentage) 1.50%      
Charge for prepayment occurring 36 months after effective date $ 0      
Description of term loan payment terms Under the second amendment, if we choose to prepay the principal with respect to any future draw down after the Effective Date, any such prepayment within the first 36 months after the Effective Date will be subject to a prepayment charge equal to 1.5% of the principal amount prepaid. No prepayment charge will be assessed for any prepayment occurring more than 36 months after the Effective Date.      
Minimum cash balance as a percentage of loan amount outstanding   50.00%    
Debt covenant minimum cash balance   $ 30,000,000    
Hercules and Silicon Valley Bank [Member] | Tranche One [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Maximum borrowing capacity under term loan $ 20,000,000      
Expiration date to borrow under a tranche for a debt instrument Sep. 15, 2023      
Hercules and Silicon Valley Bank [Member] | Tranche Two [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Maximum borrowing capacity under term loan $ 10,000,000      
Start date to borrow under a tranche for a debt instrument Jan. 01, 2023      
Expiration date to borrow under a tranche for a debt instrument Dec. 15, 2023      
Hercules and Silicon Valley Bank [Member] | Tranche Three [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Maximum borrowing capacity under term loan $ 20,000,000      
Start date to borrow under a tranche for a debt instrument Sep. 15, 2023      
Expiration date to borrow under a tranche for a debt instrument Sep. 15, 2024      
Hercules and Silicon Valley Bank [Member] | Tranche Four [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Maximum borrowing capacity under term loan $ 25,000,000      
Expiration date to borrow under a tranche for a debt instrument Dec. 31, 2024      
Hercules and Silicon Valley Bank [Member] | Option One Minimum Cash Debt Covenant [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Minimum cash balance as a percentage of loan amount outstanding 40.00%      
Hercules and Silicon Valley Bank [Member] | Option Two Minimum Cash Debt Covenant [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Minimum cash balance as a percentage of loan amount outstanding 25.00%      
Minimum market capitalization requirement for option $ 750,000,000      
Hercules and Silicon Valley Bank [Member] | Option Three Minimum Cash Debt Covenant [Member] | Second Amendment [Member]        
Debt Instrument [Line Items]        
Minimum cash balance requirement to be met as a percentage of six-month product revenue against forecast 70.00%      
Minimum percentage of net product revenues maintenance period 6 months