Quarterly report pursuant to Section 13 or 15(d)

Notes Payable - Narrative (Details)

v3.21.2
Notes Payable - Narrative (Details)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 04, 2021
USD ($)
business_day
$ / shares
shares
Jan. 31, 2021
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
$ / shares
Line of Credit Facility [Line Items]          
Sale of stock (in shares) | shares   13,971,889      
Exercise price per share (in dollars per share) | $ / shares   $ 0.001      
Proceeds from issuance of warrants   $ 4.4      
Forecast          
Line of Credit Facility [Line Items]          
Portion fundable upon achieving predetermined milestones     $ 5.0    
Warrant          
Line of Credit Facility [Line Items]          
Sale of stock (in shares) | shares   1,676,923      
Horizon & Powerscourt Notes | Notes Payable          
Line of Credit Facility [Line Items]          
Principal amount $ 35.0     $ 35.0 $ 35.0
Portion funded on the closing date 20.0     20.0 20.0
Portion fundable upon achieving predetermined milestones $ 15.0     15.0 15.0
Debt instrument, term 42 months        
Interest rate 6.25%        
Interest-only payment period 18 months        
Interest-only payment extension period 24 months        
Number of business days required for prepayment | business_day 10        
Prepayment charges percentage 3.00%        
Additional final payment percentage 3.00%        
Proceeds from issuance of warrants $ 0.9        
Debt issuance costs incurred       2.1 $ 2.1
Proceeds from debt       $ 19.6  
Horizon & Powerscourt Notes | Notes Payable | Horizon          
Line of Credit Facility [Line Items]          
Effective rate 16.30%        
Horizon & Powerscourt Notes | Notes Payable | Forecast          
Line of Credit Facility [Line Items]          
Payments of debt issuance costs     1.7    
Proceeds from debt     $ 10.0    
Horizon & Powerscourt Notes | Notes Payable | Warrant          
Line of Credit Facility [Line Items]          
Sale of stock (in shares) | shares 403,844     403,844  
Exercise price per share (in dollars per share) | $ / shares $ 2.60     $ 2.60 $ 2.60
Warrants or rights exercisable term 10 years     10 years  
Horizon & Powerscourt Notes | Prime Rate | Notes Payable          
Line of Credit Facility [Line Items]          
Floor interest rate 3.25%