INTANGIBLE ASSETS AND GOODWILL, Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Amortized intangible assets:
Gross Carrying Value	$ 547,176	$ 460,875
Accumulated Amortization	(91,864)	(83,095)
Intangible Assets, Net	455,312	377,780
Non-amortized intangible assets:
Carrying value	141,440	224,240
Total intangible assets, gross	688,616	685,115
Total intangible assets, net	596,752	602,020
Acquired IPR&D product rights
Non-amortized intangible assets:
Carrying value	62,840	145,640
Acquired future royalty rights
Non-amortized intangible assets:
Carrying value	78,600	78,600
Marketed product rights
Amortized intangible assets:
Gross Carrying Value	544,976	458,675
Accumulated Amortization	(91,618)	(82,906)
Intangible Assets, Net	453,358	375,769
Royalties
Amortized intangible assets:
Gross Carrying Value	2,200	2,200
Accumulated Amortization	(246)	(189)
Intangible Assets, Net	$ 1,954	$ 2,011