Divestiture (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jan. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of business, net				$ 0	$ 28,550
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	$ 11,800