REVENUE - Schedule of Net Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 31,126	$ 40,991	$ 63,574	$ 83,457
Total product sales, net
Disaggregation of Revenue [Line Items]
Total revenues	30,695	40,083	62,557	81,852
ROLVEDON
Disaggregation of Revenue [Line Items]
Total revenues	15,144	0	29,622	0
INDOCIN products
Disaggregation of Revenue [Line Items]
Total revenues	6,913	28,075	15,596	58,421
Sympazan
Disaggregation of Revenue [Line Items]
Total revenues	2,668	2,627	5,285	5,129
Otrexup
Disaggregation of Revenue [Line Items]
Total revenues	2,014	3,594	4,896	6,416
SPRIX
Disaggregation of Revenue [Line Items]
Total revenues	2,147	2,373	3,584	4,262
CAMBIA
Disaggregation of Revenue [Line Items]
Total revenues	1,403	1,805	2,660	4,069
Other products
Disaggregation of Revenue [Line Items]
Total revenues	406	1,609	914	3,555
Royalties and milestone revenue
Disaggregation of Revenue [Line Items]
Total revenues	431	723	1,017	1,420
Other revenue
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 185	$ 0	$ 185