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Debt - Carrying Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Debt    
Net carrying value of debt, Current Portion $ 3,761 $ 3,370
Net carrying value of debt, Long-term debt   1,529
2019 Credit Facility    
Debt    
Debt, Current Portion 3,820 3,400
Less: Debt issuance costs, Current Portion (59) (30)
Net carrying value of debt, Current Portion 3,761 3,370
Debt, including end of term fee, Long-term debt   1,620
Less: Unamortized debt discounts, Long-term debt   (91)
Net carrying value of debt, Long-term debt   1,529
Total principal repayments 3,820 5,020
Less: Discount attributable to warrants, end of term fee and debt issuance costs, Total (59) (121)
Net carrying value of debt, Total $ 3,761 $ 4,899