GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Aug. 31, 2015	Jul. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2016	Dec. 31, 2015
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount					$ 214,892	$ 76,498
Accumulated Amortization					(25,943)	(10,101)
Acquired ANDA intangible assets
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount					42,076	42,076
Accumulated Amortization					$ (7,340)	(4,287)
Weighted Average Amortization Period		10 years	10 years	10 years	10 years
NDAs and product rights
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount					$ 161,150	33,422
Accumulated Amortization					$ (16,548)	(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					$ (2,011)	(60)
Weighted Average Amortization Period	7 years				4 years 8 months 12 days
Non-compete agreement
GOODWILL AND INTANGIBLE ASSETS
Gross Carrying Amount					$ 624	0
Accumulated Amortization					$ (44)	$ 0
Weighted Average Amortization Period					7 years