GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	May 31, 2018	Dec. 31, 2017
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 288,215	$ 1,000	$ 284,716
Accumulated Amortization	(70,731)		(54,926)
Acquired ANDA intangible assets
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	46,194		42,076
Accumulated Amortization	$ (14,787)		(12,592)
Weighted Average Amortization Period	10 years
NDAs and product rights
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 230,974		230,974
Accumulated Amortization	$ (49,656)		(37,091)
Weighted Average Amortization Period	10 years
Marketing and distribution rights
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 10,423		11,042
Accumulated Amortization	$ (6,087)		(5,087)
Weighted Average Amortization Period	4 years 7 months 6 days
Non-compete agreement
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 624		624
Accumulated Amortization	$ (201)		$ (156)
Weighted Average Amortization Period	7 years