INTANGIBLE ASSETS (Details Textual) - USD ($) $ in Thousands			1 Months Ended								3 Months Ended		12 Months Ended
	Mar. 06, 2014	Jan. 02, 2014	Apr. 30, 2016	Jan. 31, 2016	Aug. 31, 2015	Jul. 31, 2015	May 31, 2015	Mar. 31, 2015	Aug. 31, 2014	Jul. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
GOODWILL AND INTANGIBLE ASSETS
Amortization of Intangible Assets													$ 21,400	$ 6,200	$ 3,300
Payments to Acquire Intangible Assets													144,494	30,500	34,634
Goodwill													1,838	1,838
Finite-Lived Intangible Assets, Gross													203,992	76,498
Accrued Royalties Related To Asset Purchase													3,882	0	0
Impairment of Intangible Assets, Finite-lived													$ 6,685	$ 0	$ 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			$ 4,500	$ 12,500
Finite-Lived Intangible Asset, Useful Life						10 years		10 years			10 years	10 years	10 years	10 years	10 years
Finite-Lived Intangible Assets, Gross						$ 25,000		$ 4,500			$ 4,500		$ 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	$ 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
Testosterone Gel NDA [Member] | Prepaid Expenses and Other Current Assets [Member]
GOODWILL AND INTANGIBLE ASSETS
Assets Held-for-sale, Not Part of Disposal Group, Current													900
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
Acquisition Costs Capitalized										$ 45
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
Acquisition Costs Capitalized									$ 100
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
Maximum Royalties Potentially Payable							$ 5,000
Royalty Rate							5.00%
Finite-Lived Intangible Assets, Gross													10,900
Impairment of Intangible Assets, Finite-lived													$ 6,700
Teva Pharmaceuticals [Member]
GOODWILL AND INTANGIBLE ASSETS
Intangible Asset Purchase Agreement Payment	$ 4,000	$ 8,500