Discontinued Operations (Narrative) (Detail) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 19, 2012	Dec. 31, 2012	Sep. 30, 2012	Jun. 28, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal of discontinued operation, net of tax	$ 0	$ 0	$ 19,176,000
Azonix [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal of discontinued operation, before tax				44,800,000
Disposal of discontinued operation, net of tax				14,500,000	500,000	900,000
Fluid Handling [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal of discontinued operation, before tax							9,300,000
Disposal of discontinued operation, net of tax							$ 4,600,000