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Debt - Schedule of Future Minimum Payments on the Term Loans (Details) - 2017 Term Loans
$ in Thousands
Dec. 31, 2019
USD ($)
Year ended December 31,  
2020 $ 9,084
2021 8,716
2022 2,461
Total minimum debt payments 20,261
Less: Amount representing interest (1,011)
Less: Debt discount and deferred charges (345)
Less: Current portion of loan payable (18,905)
Loan payable, net of current portion $ 0