GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 238,048	$ 203,992
Accumulated Amortization	(41,424)	(28,200)
Acquired ANDA intangible assets
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	42,076	42,076
Accumulated Amortization	$ (10,491)	(8,390)
Weighted Average Amortization Period	10 years
NDAs and product rights
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 184,306	150,250
Accumulated Amortization	$ (26,859)	(17,081)
Weighted Average Amortization Period	10 years
Marketing and distribution rights
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 11,042	11,042
Accumulated Amortization	$ (3,963)	(2,662)
Weighted Average Amortization Period	4 years 8 months 12 days
Non-compete agreement
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 624	624
Accumulated Amortization	$ (111)	$ (67)
Weighted Average Amortization Period	7 years