LICENSE, COLLABORATION AND OTHER REVENUE - Revenues Recognized From License, Collaboration and Other Significant Agreements (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Dec. 11, 2015	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
License Collaboration And Other Revenue [Abstract]
Total revenues		$ 37,428	$ 42,046	$ 113,683	$ 138,427
MTPC
License Collaboration And Other Revenue [Abstract]
Total revenues	$ 6,400
License, collaboration and other revenue
License Collaboration And Other Revenue [Abstract]
Total revenues		1,836	1,928	5,873	21,359
License, collaboration and other revenue | Medice
License Collaboration And Other Revenue [Abstract]
Total revenues		29	0	29	10,000
License, collaboration and other revenue | MTPC
License Collaboration And Other Revenue [Abstract]
Total revenues		525	487	2,106	5,165
License, collaboration and other revenue | JT and Torii
License Collaboration And Other Revenue [Abstract]
Total revenues		1,282	1,441	3,738	3,969
License, collaboration and other revenue | Otsuka
License Collaboration And Other Revenue [Abstract]
Total revenues		0	0	0	2,225
License, collaboration and other revenue | Total license and other revenue
License Collaboration And Other Revenue [Abstract]
Total revenues		$ 1,836	$ 1,928	$ 5,873	$ 21,359