GOODWILL AND INTANGIBLE ASSETS - Components (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 929,785	$ 893,825
Accumulated Amortization	(429,968)	(367,791)
Total	$ 499,817	526,034
Remaining Weighted Average Amortization Period	9 years 4 months 24 days
Indefinite-Lived Intangible Assets:
Total Intangible Assets, Gross	$ 929,785	909,625
Total Intangible Assets, Net	499,817	541,834
In process research and development
Indefinite-Lived Intangible Assets:
Gross Carrying Amount	0	15,800
Acquired ANDAs intangible assets
Definite-Lived Intangible Assets:
Gross Carrying Amount	214,174	210,497
Accumulated Amortization	(142,198)	(124,874)
Total	$ 71,976	85,623
Remaining Weighted Average Amortization Period	3 years 10 months 24 days
NDAs and product rights
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 673,554	641,271
Accumulated Amortization	(257,883)	(216,420)
Total	$ 415,671	424,851
Remaining Weighted Average Amortization Period	10 years 6 months
Marketing and distribution rights
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 17,157	17,157
Accumulated Amortization	(15,955)	(15,233)
Total	$ 1,202	1,924
Remaining Weighted Average Amortization Period	1 year 2 months 12 days
Customer relationships
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 24,900	24,900
Accumulated Amortization	(13,932)	(11,264)
Total	$ 10,968	$ 13,636
Remaining Weighted Average Amortization Period	3 years 1 month 6 days