Segment Information - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
	Jan. 30, 2015	Jun. 30, 2016	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
Intersegment Eliminations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intercompany revenue		$ 4,500	$ 2,000
Industrial Filtration
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intercompany revenue		$ 4,600	3,500		$ 9,100	$ 5,400
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
Gain on sale of business, net of tax			$ 11,800	$ 11,800