Segment Information - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Jan. 30, 2015	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of business, net			$ 28,550	$ 0
Vital Fluids [Member]
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 sale of business, net of tax		$ 11,800	$ 11,800