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Debt - Additional Information (Details)
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2019
USD ($)
tranche
$ / shares
shares
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Oct. 31, 2019
$ / shares
shares
Jun. 30, 2019
May 31, 2019
$ / shares
shares
SVB and WestRiver                
Debt Instrument [Line Items]                
Expiration term 10 years              
Long-term debt   $ 9,545,000   $ 9,545,000        
SVB and WestRiver | Tranche 1                
Debt Instrument [Line Items]                
Number of warrants issued (in shares) | shares 37,606              
Exercise price of warrant (in usd per share) | $ / shares $ 4.73              
Proceeds from lines of credit $ 7,500,000              
SVB and WestRiver | Tranche 2                
Debt Instrument [Line Items]                
Number of warrants issued (in shares) | shares               12,130
Exercise price of warrant (in usd per share) | $ / shares               $ 10.86
SVB and WestRiver | Tranche 3                
Debt Instrument [Line Items]                
Number of warrants issued (in shares) | shares           24,262    
Exercise price of warrant (in usd per share) | $ / shares           $ 3.88    
Silicon Valley Bank                
Debt Instrument [Line Items]                
Percentage of final payment on principal amount of refinanced advances             6.00%  
Long-term debt   700,000   700,000        
Silicon Valley Bank | Tranche 1, 2, and 3                
Debt Instrument [Line Items]                
Interest rate 6.50%              
Amortization period of payments of principal plus interest amounts 33 months              
Silicon Valley Bank | Tranche 1, 2, and 3 | Prime Rate                
Debt Instrument [Line Items]                
Interest rate, percentage point added to reference rate 1.00%              
Term Loan | SVB and WestRiver                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity $ 15,000,000.0              
Number of tranches | tranche 3              
Term Loan | SVB and WestRiver | Tranche 1                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity $ 7,500,000              
Term Loan | Silicon Valley Bank                
Debt Instrument [Line Items]                
Interest expense   300,000 $ 400,000 500,000 $ 800,000      
Term Loan | Silicon Valley Bank | Tranche 1, 2, and 3                
Debt Instrument [Line Items]                
Debt discount   $ 400,000   $ 400,000        
Term Loan | Silicon Valley Bank | Tranche 2                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity 2,500,000              
Term Loan | Silicon Valley Bank | Tranche 3                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity $ 5,000,000.0