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SIGNIFICANT AGREEMENTS AND CONTRACTS - Schedule of Revenues Disaggregated by Timing of Revenue Recognition (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Total Revenue from Janssen Collaboration Agreement | $ 0 | $ 302 | $ 0 | $ 1,275
Related Party | Collaborative Arrangement | Janssen Pharmaceuticals, Inc. |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Total Revenue from Janssen Collaboration Agreement |  | 302 |  | 1,275
Related Party | Over Time: | Collaborative Arrangement | Research and Development Services | Janssen Pharmaceuticals, Inc. |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Total Revenue from Janssen Collaboration Agreement |  | 302 |  | 1,273
Related Party | Over Time: | Collaborative Arrangement | Clinical Supply Services | Janssen Pharmaceuticals, Inc. |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Total Revenue from Janssen Collaboration Agreement |  | $ 0 |  | $ 2

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