GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	Aug. 31, 2015	Jul. 31, 2015	Mar. 31, 2016	Mar. 31, 2014	Dec. 31, 2015
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount			$ 161,879		$ 76,498
Accumulated Amortization			(14,493)		(10,101)
Acquired ANDA intangible assets
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount			42,076		42,076
Accumulated Amortization			$ (5,238)		(4,287)
Weighted Average Amortization Period		10 years	10 years	10 years
NDAs and product rights
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount			$ 108,761		33,422
Accumulated Amortization			$ (8,545)		(5,754)
Weighted Average Amortization Period			10 years 1 month 6 days
Marketing and distribution rights
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount	$ 1,000		$ 11,042		1,000
Accumulated Amortization			$ (710)		$ (60)
Weighted Average Amortization Period	7 years		4 years 8 months 12 days