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Long-term debt and other borrowings (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
shares
$ / shares
Feb. 28, 2021
USD ($)
May 31, 2020
USD ($)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
$ / shares
Dec. 31, 2018
USD ($)
May 11, 2022
Jul. 31, 2021
$ / shares
Dec. 31, 2019
USD ($)
tranche
Jun. 30, 2019
Mar. 31, 2019
USD ($)
Jun. 30, 2018
Debt Instrument                        
Gain on extinguishment of loan payable       $ 0 $ 636,000              
IPO                        
Debt Instrument                        
Issuance price (usd per share) | $ / shares $ 16.00       $ 16.00     $ 16.00        
CARES Act | Loans Payable                        
Debt Instrument                        
Interest rate (percent)     1.00%                  
Proceeds from notes payable     $ 600,000                  
Debt instrument term (years)     2 years                  
Gain on extinguishment of loan payable   $ 600,000                    
2021 Notes | Convertible promissory notes                        
Debt Instrument                        
Interest rate (percent) 6.00%       6.00%              
Principal amount $ 125,000,000       $ 125,000,000              
Discount on offering price (percent) 18.00%       18.00%              
Shares issued upon conversion of convertible debt (shares) | shares 9,732,593                      
Line of Credit | LSA                        
Debt Instrument                        
Number of tranches | tranche                 3      
Maximum borrowing capacity                 $ 3,000,000      
Proceeds from issuance of long-term debt           $ 300,000            
Interest rate (percent)                       6.00%
Prepayment premium (percent)   1.00%                    
Final payment percentage as a portion of principal amount funded (percent)                   3.00%    
Liquidity event fee (percent)                       3.50%
Debt covenant, required percentage of cash on had based on projected revenue       80.00%                
Outstanding principal balance       $ 2,800,000                
Line of Credit | LSA | Forecast                        
Debt Instrument                        
Prepayment premium (percent)             0.00%          
Line of Credit | LSA, First Amendment                        
Debt Instrument                        
Maximum borrowing capacity                     $ 3,000,000  
Line of Credit | LSA, Second Amendment                        
Debt Instrument                        
Maximum borrowing capacity     $ 5,000,000