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Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Debt    
Total principal $ 20,000 $ 20,000
Less: Current portion of long-term debt (5,000) (1,667)
Longterm debt, net of current portion 15,000 18,333
Final debt payment liability 700 700
Debt discount, net of accretion (482) (622)
Longterm debt, net of discount and current portion $ 15,218 $ 18,411