Goodwill and Other Intangible Assets, Net - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Finite-Lived Intangible Assets
Accumulated Amortization	$ (208,740)		$ (195,334)
Intangible Assets, Gross Amount	952,123		1,010,675
Gross Impairment	225		56,487
Intangible assets, net	743,158		758,854
Intangible assets amortization expense	15,471	$ 16,518
IPR&D
Indefinite-lived Intangible Assets
Gross Amount (1)	173,757		187,007
Reclassifications	0		(9,400)
Impairment	(225)		(3,850)
Net Balance	173,532		173,757
Product licensing rights
Finite-Lived Intangible Assets
Gross Amount (1)	746,906		790,143
Accumulated Amortization	(197,563)		(182,901)
Reclassifications	0		9,400
Gross Impairment	0		(52,637)
Net Balance	$ 549,343		$ 564,005
Wgtd Avg Remaining Amortization Period (years)	10 years 4 months 24 days		10 years 6 months
Trademarks
Finite-Lived Intangible Assets
Gross Amount (1)	$ 16,000		$ 16,000
Accumulated Amortization	(4,559)		(4,244)
Reclassifications	0		0
Gross Impairment	0		0
Net Balance	$ 11,441		$ 11,756
Wgtd Avg Remaining Amortization Period (years)	18 years		18 years
Customer relationships
Finite-Lived Intangible Assets
Gross Amount (1)	$ 4,225		$ 6,290
Accumulated Amortization	(1,863)		(3,863)
Reclassifications	0		0
Gross Impairment	0		0
Net Balance	$ 2,362		$ 2,427
Wgtd Avg Remaining Amortization Period (years)	9 years 1 month 6 days		9 years 3 months 18 days
Other intangibles
Finite-Lived Intangible Assets
Gross Amount (1)	$ 11,235		$ 11,235
Accumulated Amortization	(4,755)		(4,326)
Reclassifications	0		0
Gross Impairment	0		0
Net Balance	$ 6,480		$ 6,909
Wgtd Avg Remaining Amortization Period (years)	5 years 10 months 24 days		6 years