Divestiture (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 30, 2015	Mar. 31, 2016	Mar. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of business, net		$ 0	$ 28,370
Gain on disposition of business		$ 0	18,647
Vital Fluids
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of business, net	$ 30,100
Post closing adjustment to cash purchase price	$ 200
Gain on disposition of business			18,600
Gain on sale of business, net of tax			$ 11,800