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LICENSE, COLLABORATION AND OTHER REVENUE - U.S. Collaboration and License Agreement with Otsuka Pharmaceutical Co. Ltd. - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenues	$ 236,196	$ 160,180	$ 194,623
License, collaboration and other revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenues	8,864	8,000	24,322
Otsuka | License, collaboration and other revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenues	$ 0	$ 0	$ 2,225

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