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Borrowings - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Oct. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]      
Debt covenant minimum cash balance   $ 5.0  
Term Loan | Pharmakon Term Loan      
Debt Instrument [Line Items]      
Term loan proceeds $ 40.0    
Debt issuance costs $ 1.3    
Debt period payment, interest only period 35 months    
Fixed interest rate (percent) 11.50%    
Debt closing fee percentage (percent) 1.50%    
Debt instrument fee amount $ 0.6    
Effective interest rate during the period (percent)   12.30% 12.30%
Term Loan | Pharmakon Term Loan | Prepayment Penalty, 31-48 Months      
Debt Instrument [Line Items]      
Debt prepayment penalty percentage (percent) 2.00%    
Term Loan | Pharmakon Term Loan | Prepayment Penalty, 49-60 Months      
Debt Instrument [Line Items]      
Debt prepayment penalty percentage (percent) 1.00%