INTANGIBLE ASSETS - Summary of Gross Carrying Amounts and Net Book Values of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Intangible assets
Gross Carrying Amount	$ 251,736	$ 251,736
Accumulated Amortization	(66,308)	(53,740)
Total	$ 185,428	197,996
INDOCIN | Product Rights
Intangible assets
Remaining Useful Life (In years)	8 years 10 months 24 days
Gross Carrying Amount	$ 154,100	154,100
Accumulated Amortization	(39,916)	(33,495)
Total	$ 114,184	120,605
Otrexup | Product Rights
Intangible assets
Remaining Useful Life (In years)	6 years 6 months
Gross Carrying Amount	$ 44,086	44,086
Accumulated Amortization	(8,266)	(5,511)
Total	$ 35,820	38,575
Sympazan | Product Rights
Intangible assets
Remaining Useful Life (In years)	11 years 3 months 18 days
Gross Carrying Amount	$ 14,550	14,550
Accumulated Amortization	(808)	(202)
Total	$ 13,742	14,348
SPRIX | Product Rights
Intangible assets
Remaining Useful Life (In years)	3 years 10 months 24 days
Gross Carrying Amount	$ 39,000	39,000
Accumulated Amortization	(17,318)	(14,532)
Total	$ 21,682	$ 24,468