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DEBT - Schedule of Future Minimum Payments Under Term Loan Facility (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Debt Disclosure [Abstract] |  |
2022 | $ 4,510 |
2023 | 25,352 |
2024 | 33,140 |
Total | 63,002 |
Less: amount representing interest | (9,727) |
Less: unamortized debt discount and issuance costs | (863) |
Less: unamortized end of term charge | (2,582) |
Noncurrent portion of debt | $ 49,830 | $ 24,042

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