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Long Term Debt - Term Loan Interest Expense (Details) - Term loan - BT Term Loan - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Debt Instrument [Line Items]        
Interest on principal balance $ 1,891 $ 393 $ 3,731 $ 393
Accretion of original issue discount 183 31 350 31
Interest expense - accretion of amendment fee 51 0 51 0
Amortization of deferred financing costs 542 85 1,040 85
Total term loan interest expense $ 2,667 $ 509 $ 5,172 $ 509