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RELATED PARTIES (Details) - Executive Officer - USD ($) $ / shares in Units, $ in Millions |  | 12 Months Ended
--- | --- | ---
Jun. 29, 2021 | Dec. 31, 2018
Related Party Transaction [Line Items] |  |
Unvested common stock purchased (in shares) |  | 1,479,459
Share price (in dollars per share) |  | $ 1.01
Consideration for purchase of unvested common stock |  | $ 1.5
Interest rate (in percent) |  | 2.31%
Amount repaid under promissory note | $ 1.6 |

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