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Debt - Schedule of Interest Expense Recognized in Relation to Debt (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]  
Amortization of debt issuance costs $ 11
Total interest expense 431
Morgan Stanley Senior Funding, Inc | Credit Agreement | Term Loan A Facility  
Debt Instrument [Line Items]  
Contractual interest expenses related to Term Loan A Facility $ 420