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COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - ft² | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Nov. 30, 2019
Lessee, Lease, Description [Line Items] |  |
Operating lease, Weighted average remaining lease term | 2 years 3 months 18 days |
Operating lease, weighted average incremental borrowing rate | 7.60% |
Burlingame, California |  |
Lessee, Lease, Description [Line Items] |  |
Rentable square feet |  | 2,111
Lease term |  | 36 months
Waltham Massachusetts Member |  |
Lessee, Lease, Description [Line Items] |  |
Lease space | 20,062 |

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