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Long-term Debt (Details) - Term Loan - Loan and Security Agreement with Hercules Capital, Inc. - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 27, 2019
Feb. 02, 2017
Apr. 30, 2020
Mar. 31, 2022
Debt Instrument [Line Items]        
Amount borrowed $ 55.0      
Debt instrument, redemption price, percentage of principal amount redeemed 50.00%      
Prepayment of outstanding principal due $ 15.7   $ 15.7  
Accrued interest, fees and other amounts     $ 0.3  
Extinguishment of debt, amount       $ 0.5
Minimum        
Debt Instrument [Line Items]        
Fixed interest rate 11.55% 10.55%    
Prime Rate        
Debt Instrument [Line Items]        
Variable interest rate 6.80% 6.80%