FAIR VALUE DISCLOSURES (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				3 Months Ended	12 Months Ended
	Jul. 31, 2015	Mar. 31, 2015	Aug. 31, 2014	Jul. 31, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information
Fair Value Inputs, Discount Rate						15.00%
Payments to Acquire Intangible Assets						$ 30,500	$ 34,634	$ 0
Long-term Debt, Gross						143,750	143,750
Long-term Debt, Total						113,427	106,540
Finite-Lived Intangible Assets, Gross						76,498	45,999
Property, Plant and Equipment, Net, Total						7,131	5,223
Inventory, Net, Total						13,387	$ 7,518
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information
Theoretical Interest Rate For Debt Without Embedded Conversion Option							9.00%
Fair Value, Inputs, Level 1 [Member]
Fair Value Inputs, Assets, Quantitative Information
Notes Payable, Fair Value Disclosure						$ 144,500
Convertible Senior Notes [Member]
Fair Value Inputs, Assets, Quantitative Information
Long-term Debt, Gross							$ 143,800
Exercise Price Of Bond Hedge							$ 69.48
Underlying Shares Of Common Stock Bond Hedge						2,068,792	2,068,792
Class of Warrant or Right, Exercise Price of Warrants or Rights						$ 96.21	$ 96.21
Net Adjustments To Additional Paid In Capital Bond Hedge Acquired Warrant Issued Net							$ 15,600
Lithobid Purchase Agreement [Member]
Fair Value Inputs, Assets, Quantitative Information
Fair Value Inputs, Discount Rate				10.00%
Payments to Acquire Intangible Assets				$ 11,000
Finite-Lived Intangible Assets, Gross				$ 12,000
Finite-Lived Intangible Asset, Useful Life				10 years		10 years
Acquisition Costs Capitalized				$ 45
Inventory, Net, Total				$ 86
Vancocin Purchase Agreement [Member]
Fair Value Inputs, Assets, Quantitative Information
Fair Value Inputs, Discount Rate			10.00%
Payments to Acquire Intangible Assets			$ 11,000
Finite-Lived Intangible Assets, Gross			$ 10,500
Finite-Lived Intangible Asset, Useful Life			10 years
Acquisition Costs Capitalized			$ 100
Property, Plant and Equipment, Net, Total			$ 200
Property, Plant and Equipment, Useful Life			10 years
Inventory, Net, Total			$ 400
Acquired ANDA Intangible Assets [Member]
Fair Value Inputs, Assets, Quantitative Information
Fair Value Inputs, Discount Rate	10.00%	10.00%			10.00%
Payments to Acquire Intangible Assets	$ 25,000	$ 4,500
Finite-Lived Intangible Assets, Gross	$ 25,000	$ 4,500			$ 12,500	$ 42,076	$ 12,577
Finite-Lived Intangible Asset, Useful Life	10 years	10 years			10 years	10 years