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Long-Term Debt - Summary of Term Loan Credit Facility (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Term Loan Facility    
Debt Instrument [Line Items]    
Term Loan Credit Facility outstanding $ 97,500  
Less: Current portion of Term Loan Credit Facility (7,500)  
Long-term portion of Credit Facility 90,000  
Less: Original Issue Discount (7,702)  
Term Loan Embedded Derivative Liability 407  
Total Term Loan - Non-current 89,242  
Initial Warrant    
Debt Instrument [Line Items]    
Initial Warrant Liability 6,537 $ 0
Initial Warrant | Term Loan Facility    
Debt Instrument [Line Items]    
Initial Warrant Liability $ 6,537