COLLABORATION AND LICENSING AGREEMENTS - Deferred Revenue (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Current
Beginning balance	$ 7,182
Ending balance	7,272
Non-Current
Beginning balance	8,644
Ending balance	12,770
2017 KKC Agreement
Current
Beginning balance	7,182	$ 4,211
Amounts invoiced as prepayments for product supply	2,654	1,182
Decrease for revenue recognized for product supply	(6,650)	(4,586)
Reclassify amounts to be recognized in the next twelve months	4,086	3,265
Ending balance	7,272	4,072
Non-Current
Beginning balance	8,644	9,025
Amounts invoiced as prepayments for product supply	8,212	4,530
Decrease for revenue recognized for product supply	0	0
Reclassify amounts to be recognized in the next twelve months	(4,086)	(3,265)
Ending balance	$ 12,770	$ 10,290