GOODWILL AND INTANGIBLE ASSETS - Components (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 497,332	$ 480,915
Accumulated Amortization	(308,123)	(255,855)
Net Carrying Amount	$ 189,209	225,060
Weighted Average Amortization Period	4 years 6 months
Indefinite-Lived Intangible Assets:
Gross Carrying Amount	$ 517,132	507,490
Net Carrying Amount	209,009	251,635
In process research and development
Indefinite-Lived Intangible Assets:
Gross Carrying Amount	19,800	26,575
Acquired ANDA intangible assets
Definite-Lived Intangible Assets:
Gross Carrying Amount	209,780	195,862
Accumulated Amortization	(100,660)	(75,606)
Net Carrying Amount	$ 109,120	120,256
Weighted Average Amortization Period	5 years 2 months 12 days
NDAs and product rights
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 244,871	242,372
Accumulated Amortization	(184,861)	(162,188)
Net Carrying Amount	$ 60,010	80,184
Weighted Average Amortization Period	3 years 1 month 6 days
Marketing and distribution rights
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 17,157	17,157
Accumulated Amortization	(14,271)	(13,309)
Net Carrying Amount	$ 2,886	3,848
Weighted Average Amortization Period	3 years
Non-compete agreement
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 624	624
Accumulated Amortization	(624)	(602)
Net Carrying Amount	0	22
Customer relationships
Definite-Lived Intangible Assets:
Gross Carrying Amount	24,900	24,900
Accumulated Amortization	(7,707)	(4,150)
Net Carrying Amount	$ 17,193	$ 20,750
Weighted Average Amortization Period	4 years 9 months 18 days