GOODWILL AND INTANGIBLE ASSETS (Details Textual) - USD ($) $ in Thousands	1 Months Ended							3 Months Ended				9 Months Ended
	Apr. 30, 2016	Jan. 31, 2016	Aug. 31, 2015	Jul. 31, 2015	May 31, 2015	Aug. 31, 2014	Jul. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
GOODWILL AND INTANGIBLE ASSETS
Amortization of Intangible Assets								$ 5,700	$ 1,900			$ 15,800	$ 4,300
Payments to Acquire Intangible Assets												144,494	30,500
Goodwill								1,838				1,838		$ 1,838
Finite-Lived Intangible Assets, Gross								214,892				214,892		76,498
Accrued Royalties Related To Asset Purchase								3,882	$ 0			$ 3,882	$ 0
Cranford Pharmaceuticals [Member] | Non Compete Agreement [Member]
GOODWILL AND INTANGIBLE ASSETS
Finite-Lived Intangible Asset, Useful Life	7 years
Finite-Lived Intangible Assets, Gross	$ 600
Acquired ANDA Intangible Assets [Member]
GOODWILL AND INTANGIBLE ASSETS
Payments to Acquire Intangible Assets				$ 25,000						$ 4,500	$ 12,500
Finite-Lived Intangible Asset, Useful Life				10 years						10 years	10 years	10 years
Finite-Lived Intangible Assets, Gross								42,076				$ 42,076		42,076
Marketing and Distribution Rights [Member]
GOODWILL AND INTANGIBLE ASSETS
Finite-Lived Intangible Asset, Useful Life			7 years									4 years 8 months 12 days
Finite-Lived Intangible Assets, Gross			$ 1,000					$ 11,042				$ 11,042		$ 1,000
Marketing and Distribution Rights [Member] | H2 - Pharma, LLC [Member]
GOODWILL AND INTANGIBLE ASSETS
Payments to Acquire Intangible Assets		$ 8,800
Finite-Lived Intangible Asset, Useful Life		4 years
Finite-Lived Intangible Assets, Gross		$ 10,000
Acquisition Costs Capitalized		42
Accrued Royalties Assumed in Asset Purchase		1,200
Lithobid Purchase Agreement [Member]
GOODWILL AND INTANGIBLE ASSETS
Payments to Acquire Intangible Assets							$ 11,000
Finite-Lived Intangible Asset, Useful Life							10 years
Finite-Lived Intangible Assets, Gross							$ 12,000
Payment To Acquire Intangible Assets If Contingency Occurs							$ 1,000
Vancocin Purchase Agreement [Member]
GOODWILL AND INTANGIBLE ASSETS
Payments to Acquire Intangible Assets						$ 11,000
Finite-Lived Intangible Asset, Useful Life						10 years
Finite-Lived Intangible Assets, Gross						$ 10,500
New Drug Applications [Member] | Merck Sharp Dohme B.V [Member]
GOODWILL AND INTANGIBLE ASSETS
Payments to Acquire Intangible Assets		$ 75,000
Finite-Lived Intangible Asset, Useful Life		10 years
Finite-Lived Intangible Assets, Gross		$ 75,300
Acquisition Costs Capitalized		$ 300
New Drug Applications [Member] | Cranford Pharmaceuticals [Member]
GOODWILL AND INTANGIBLE ASSETS
Payments to Acquire Intangible Assets	$ 60,000
Finite-Lived Intangible Asset, Useful Life	10 years
Finite-Lived Intangible Assets, Gross	$ 52,400
Acquisition Costs Capitalized	300
Accrued Royalties Related To Asset Purchase	3,900
Asset Acquisition Purchase Price	$ 64,200
New Drug Applications [Member] | Testosterone Gel NDA [Member]
GOODWILL AND INTANGIBLE ASSETS
Finite-Lived Intangible Asset, Useful Life					11 years
Maximum Royalties Potentially Payable					$ 5,000
Royalty Rate					5.00%
Finite-Lived Intangible Assets, Gross					$ 10,900