COLLABORATION AND LICENSING AGREEMENTS - Deferred Revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Current
Beginning balance	$ 10,686
Ending balance	6,280
Non-Current
Beginning balance	7,232
Ending balance	12,295
2017 KKC Agreement
Current
Beginning balance	10,686	$ 7,182
Prepaid product supply	227	731
Product supply delivered	(4,633)	(1,328)
Reclassify amounts to be recognized in the next twelve months	0	4,244
Ending balance	6,280	10,829
Non-Current
Beginning balance	7,232	8,644
Prepaid product supply	5,063	5,213
Product supply delivered	0	0
Reclassify amounts to be recognized in the next twelve months	0	(4,244)
Ending balance	$ 12,295	$ 9,613