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Discontinued Operations (Narrative) (Detail) (USD $) | 12 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Jun. 19, 2012 Azonix [Member] | Dec. 31, 2012 Azonix [Member] | Sep. 30, 2012 Azonix [Member] | Jun. 28, 2012 Fluid Handling [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 |  |  | $ 9,300,000
Disposal of discontinued operation, net of tax | $ 19,176,000 | $ 0 | $ 0 | $ 14,500,000 | $ 500,000 | $ 900,000 | $ 4,600,000

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