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LEASES - Narrative (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 USD ($) ft² extension_option | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($)
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, remaining lease term | 1 year 5 months 12 days |  |
Operating lease, cost | $ | $ 1.2 |  |
Operating lease, payments | $ | $ 1.5 | $ 1.4 |
Minimum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, incremental borrowing rates based on remaining lease term | 6.65% |  |
Maximum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, incremental borrowing rates based on remaining lease term | 6.94% |  |
Cambridge |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Area of property leased (in square feet) | ft² | 65,167 |  |
Cambridge | Letter of Credit |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Total security deposit in connection with lease | $ | $ 1.7 |  | $ 1.7
Cambridge | Office And Storage Space |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Leased area subject to expiration | ft² | 59,216 |  |
Operating lease extensions (in extension options) | extension_option | 1 |  |
Lease extension period | 5 years |  |
Cambridge | Laboratory Space |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Leased area subject to expiration | ft² | 5,951 |  |
Operating lease extensions (in extension options) | extension_option | 1 |  |
Lease extension period | 2 years |  |

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