Quarterly report pursuant to Section 13 or 15(d)

Borrowings - 2019 Term Loan (Details)

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Borrowings - 2019 Term Loan (Details) - USD ($)
Mar. 23, 2020
May 23, 2019
2019 Term Loan | Term loan    
Debt Instrument [Line Items]    
Principal amount   $ 60,000,000.0
Deferred financing costs   2,200,000
Additional borrowing amount   $ 15,000,000.0
Debt interest rate (as a percentage)   12.00%
Paid-in-kind interest rate may add at the end of each reporting period (as a percentage)   4.00%
Final payment fee (as a percentage)   20.00%
Debt required collateral amount   $ 30,000,000.0
Term loan | Amended 2019 Term Loan    
Debt Instrument [Line Items]    
Principal amount $ 75,000,000.0  
Debt interest rate (as a percentage) 16.00%  
Paid-in-kind interest rate may add at the end of each reporting period (as a percentage) 8.00%  
Required principal payment $ 3,000,000.0  
Debt required collateral amount 12,000,000.0  
Repayments of debt principal $ 2,000,000.0  
Number of common stock issued for relief of debt final payment fee 11,019,298  
Increase in debt issuance discount $ 900,000  
Increase of warrant fair value $ 300,000