INTANGIBLE ASSETS - Summary of Gross Carrying Amounts and Net Book Values of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Intangible assets
Gross Carrying Amount	$ 315,796	$ 315,796
Accumulated Amortization	(124,179)	(99,742)
Total	$ 191,617	216,054
INDOCIN | Product Rights
Intangible assets
Remaining useful life	9 years 7 months 6 days
Gross Carrying Amount	$ 154,100	154,100
Accumulated Amortization	(30,285)	(20,654)
Total	$ 123,815	133,446
CAMBIA | Product Rights
Intangible assets
Remaining useful life	3 months 18 days
Gross Carrying Amount	$ 51,360	51,360
Accumulated Amortization	(49,372)	(43,410)
Total	$ 1,988	7,950
Otrexup | Product Rights
Intangible assets
Remaining useful life	7 years 2 months 12 days
Gross Carrying Amount	$ 44,086	44,086
Accumulated Amortization	(4,133)	0
Total	$ 39,953	44,086
SPRIX | Product Rights
Intangible assets
Remaining useful life	4 years 7 months 6 days
Gross Carrying Amount	$ 39,000	39,000
Accumulated Amortization	(13,139)	(8,960)
Total	$ 25,861	30,040
Zipsor | Product Rights
Intangible assets
Remaining useful life	0 years
Gross Carrying Amount	$ 27,250	27,250
Accumulated Amortization	(27,250)	(26,718)
Total	$ 0	$ 532