Goodwill and Other Intangible Assets - Changes In Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-lived Intangible Assets [Roll Forward]
Amortization	$ (53,472)	$ (61,443)	$ (65,713)
Impairments	(231,086)	(128,127)	(44,369)
Balance at end of period	280,576
IPR&D
Indefinite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	149,161	173,757
Acquisitions	0	0
Impairments	(139,461)	(24,596)
Reclassifications	(5,300)
Balance at end of period	4,400	149,161	173,757
Product licensing rights
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	402,340	564,005
Acquisitions	50	200
Amortization	(50,567)	(58,335)
Impairments	(88,492)	(103,530)
Reclassifications	5,300
Balance at end of period	268,631	402,340	564,005
Trademarks
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	10,624	11,756
Acquisitions	0	0
Amortization	(928)	(1,132)
Impairments	0	0
Reclassifications	0
Balance at end of period	9,696	10,624	11,756
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	2,167	2,427
Acquisitions	0	0
Amortization	(260)	(260)
Impairments	0	0
Reclassifications	0
Balance at end of period	1,907	2,167	2,427
Other intangibles
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	5,192	6,909
Acquisitions	0	0
Amortization	(1,717)	(1,717)
Impairments	(3,133)	0
Reclassifications	0
Balance at end of period	$ 342	$ 5,192	$ 6,909