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Discontinued Operations - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2012
Dec. 31, 2014
Mar. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Escrow identified for general representations and warranties period         18 months    
Remaining general escrow fund to be held         36 months    
Environmental remediation at the Pearland, Texas facility $ 0.9   $ 0.9     $ 1.3  
Estimated product liability obligations 3.0   3.0     $ 3.0  
Gain from discontinued operations and disposal, net of income tax expense of $1.6, $0.0, $1.6, and $0.0, respectively 2.4 $ 0.2 2.4 $ 0.1      
Escrow Balance, Subsequent Release             $ 7.0
Escrow Deposit $ 4.0   $ 4.0        
Escrow [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Gain (Loss) on Disposition of Business         $ 22.0