Goodwill and Other Intangible Assets, Net - Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets
Accumulated Amortization	$ (234,972)	$ (195,334)
Reclassifications	0	0
Gross Amount	950,029	1,010,675
Gross Impairment	(17,972)	(56,487)
Net Balance	697,085	758,854
IPR&D
Indefinite-lived Intangible Assets
Gross Amount	173,757	187,007
Reclassifications	0	(9,400)
Gross Impairment	(3,415)	(3,850)
Net Balance	170,342	173,757
Product licensing rights
Finite-Lived Intangible Assets
Gross Amount	744,812	790,143
Accumulated Amortization	(222,221)	(182,901)
Reclassifications	0	9,400
Gross Impairment	(14,557)	(52,637)
Net Balance	$ 508,034	$ 564,005
Wtd Avg Remaining Amortization Period (years)	9 years 9 months 18 days	10 years 6 months
Trademarks
Finite-Lived Intangible Assets
Gross Amount	$ 16,000	$ 16,000
Accumulated Amortization	(5,144)	(4,244)
Reclassifications	0	0
Gross Impairment	0	0
Net Balance	$ 10,856	$ 11,756
Wtd Avg Remaining Amortization Period (years)	18 years	18 years
Customer relationships
Finite-Lived Intangible Assets
Gross Amount	$ 4,225	$ 6,290
Accumulated Amortization	(1,993)	(3,863)
Reclassifications	0	0
Gross Impairment	0	0
Net Balance	$ 2,232	$ 2,427
Wtd Avg Remaining Amortization Period (years)	8 years 7 months 6 days	9 years 3 months 18 days
Other intangibles
Finite-Lived Intangible Assets
Gross Amount	$ 11,235	$ 11,235
Accumulated Amortization	(5,614)	(4,326)
Reclassifications	0	0
Gross Impairment	0	0
Net Balance	$ 5,621	$ 6,909
Wtd Avg Remaining Amortization Period (years)	5 years 8 months 12 days	6 years