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Debt - Summary of Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Debt Instrument [Line Items] |  |
Interest expense | $ 381 | $ 2,219
Accretion of debt discount - issuance costs | 155 | 620
Accretion of debt discount - warrants | 0 | 1,029
2021 Promissory Note |  |
Debt Instrument [Line Items] |  |
Interest expense | 178 | 0
Convertible notes |  |
Debt Instrument [Line Items] |  |
Interest expense | 0 | 452
Other Debt |  |
Debt Instrument [Line Items] |  |
Interest expense | $ 48 | $ 118

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