REVENUE - Schedule of Disaggregated Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 32,448	$ 42,466
Total product sales, net
Disaggregation of Revenue [Line Items]
Total revenues	31,862	41,769
ROLVEDON
Disaggregation of Revenue [Line Items]
Total revenues	14,478	0
INDOCIN products
Disaggregation of Revenue [Line Items]
Total revenues	8,682	30,346
Sympazan
Disaggregation of Revenue [Line Items]
Total revenues	2,617	2,502
Otrexup
Disaggregation of Revenue [Line Items]
Total revenues	2,882	2,822
SPRIX
Disaggregation of Revenue [Line Items]
Total revenues	1,437	1,889
CAMBIA
Disaggregation of Revenue [Line Items]
Total revenues	1,256	2,264
Other products
Disaggregation of Revenue [Line Items]
Total revenues	510	1,946
Royalties and milestone revenue
Disaggregation of Revenue [Line Items]
Total revenues	$ 586	$ 697