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RELATED PARTY TRANSACTIONS - Additional Information (Details) - TDI - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 03, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Related Party Transaction [Line Items] |  |  |
Additional ordinary shares acquired from former shareholders | 9,200,000 |  |
Sales transactions |  | $ 13,000 | $ 49,000

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