XML 33 R23.htm IDEA: XBRL DOCUMENT v3.21.2
Debt (Narrative) (Details)
3 Months Ended 9 Months Ended 20 Months Ended
Nov. 30, 2020
USD ($)
Oct. 08, 2020
USD ($)
Sep. 30, 2020
USD ($)
Aug. 25, 2020
USD ($)
Jun. 22, 2016
USD ($)
Jun. 17, 2016
payment
Sep. 30, 2021
USD ($)
prepayment
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
prepayment
Sep. 30, 2020
USD ($)
May 31, 2019
amendment
May 01, 2020
USD ($)
Apr. 23, 2020
USD ($)
Debt Instrument [Line Items]                          
Number of times agreement was amended | amendment                     8    
Total revenues             $ 0 $ 5,000,000 $ 0 $ 5,006,000      
Revenue under collaborations                          
Debt Instrument [Line Items]                          
Total revenues             0 $ 5,000,000 0 $ 5,000,000      
Revenue under collaborations | Sanofi                          
Debt Instrument [Line Items]                          
Total revenues $ 5,000,000 $ 4,000,000 $ 1,000,000                    
Debt Financing Agreement                          
Debt Instrument [Line Items]                          
Proceeds from borrowing under term loan         $ 20,000,000                
Stated interest rate, percentage           8.51%              
Number of monthly payments | payment           24              
Long-term debt             4,700,000   4,700,000        
Debt fee             1,300,000   1,300,000        
Debt issuance costs             $ 100,000   $ 100,000        
Debt instrument effective rate             8.98%   8.98%        
Debt Financing Agreement | London Interbank Offered Rate (LIBOR)                          
Debt Instrument [Line Items]                          
Basis spread on variable rate, percentage           0.44%              
PPP Loan                          
Debt Instrument [Line Items]                          
PPP loan                       $ 700,000  
Forgiveness threshold amount                       $ 500,000  
PPP Loan | Other Current Liabilities                          
Debt Instrument [Line Items]                          
Long-term debt                         $ 700,000
Tenth Amendment                          
Debt Instrument [Line Items]                          
Interest-only payment extension       7 months                  
Prepayment requirement       $ 10,000,000                  
Term Loan                          
Debt Instrument [Line Items]                          
Repayments of debt $ 5,000,000 $ 4,000,000 $ 1,000,000           $ 10,000,000        
Payment fee             5.50%   5.50%        
Number of prepayments to lender | prepayment             3   3        
Additional extension for interest only payments                 7 months