Acquisition and Divestiture - Divestitures (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of business, net	$ 28,370,000	$ 0
Gain (Loss) on Disposition of Business	18,647,000	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			30,100,000
Post closing adjustment to cash purchase price			200,000
Gain (Loss) on Disposition of Business	18,600,000
Gain on sale of business, net of tax	$ 11,800,000