Restructuring (Details) $ in Thousands		3 Months Ended			9 Months Ended
	Jun. 19, 2017 USD ($) position	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Restructuring, Settlement and Impairment Provisions [Abstract]
Impairment charge		$ 0		$ 0	$ 329,097	$ 0
Severance and other exits costs	$ 5,800
Other exit costs	$ 3,000
Restructuring Reserve [Roll Forward]
Balance					0
Expenses, Net					5,900
Cash					(5,100)
Noncash					(100)
Balance		$ 700			$ 700
Ionsys | Not discontinued operations, discontinuation and market withdrawal
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of positions eliminated | position	57
Percent of workforce eliminated	15.00%
Restructuring, Settlement and Impairment Provisions [Abstract]
Impairment, severance and other employee costs			$ 276,900
Impairment charge			268,100
Severance and other exits costs			$ 8,800