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SEGMENT INFORMATION - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 18,306 | $ 356 | $ 24,743 | $ 837
Less: |  |  |  |
Research and development | 27,084 | 24,223 | 53,090 | 60,114
General and administrative | 9,077 | 12,045 | 19,136 | 23,812
Impairment of long-lived assets | 0 | 1,172 | 0 | 5,521
Stock-based compensation |  |  | 4,822 | 5,784
Net loss | (19,986) | (36,128) | (50,583) | (85,217)
Reportable Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 18,306 | 356 | 24,743 | 837
Less: |  |  |  |
Research and development | 14,643 | 14,916 | 29,754 | 36,082
General and administrative | 7,514 | 8,183 | 16,782 | 18,360
Clinical manufacturing operations | 11,420 | 8,301 | 21,076 | 20,856
Impairment of long-lived assets | 0 | 1,172 | 0 | 5,521
Stock-based compensation | 2,226 | 3,065 | 4,822 | 5,784
Other segment items | 2,489 | 847 | 2,892 | (549)
Net loss | $ (19,986) | $ (36,128) | $ (50,583) | $ (85,217)

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