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Goodwill - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Octane Additives [Member]
Dec. 31, 2012
Octane Additives [Member]
Dec. 31, 2011
Octane Additives [Member]
Dec. 31, 2013
Fuel Specialties [Member]
Dec. 31, 2012
Fuel Specialties [Member]
Dec. 31, 2011
Fuel Specialties [Member]
Dec. 31, 2013
Performance Chemicals [Member]
Dec. 31, 2012
Performance Chemicals [Member]
Dec. 31, 2011
Performance Chemicals [Member]
Dec. 31, 2013
Chemsil & Chemtec [Member]
Aug. 30, 2013
Chemsil & Chemtec [Member]
Dec. 31, 2013
Strata [Member]
Dec. 31, 2013
Bachman Group Companies [Member]
Nov. 04, 2013
Bachman Group Companies [Member]
Goodwill [Line Items]                                  
Impairment of goodwill $ 1.3 $ 1.2 $ 2.0 $ 1.3 $ 1.2 $ 2.0 $ 0 $ 0   $ 0 $ 0            
Goodwill 187.9 149.0 141.5 0 1.3 2.6 141.1 117.6 108.8 46.8 30.1 30.1 16.7     22.9  
Voting equity interests acquired                           100.00%     100.00%
Purchase price of cash 51.2                             45.8  
Issuance of common stock                               319,953  
Purchase price of common stock 6.2                             15.0  
Date of acquisition                         Aug. 30, 2013     Nov. 04, 2013  
Reduction in other net assets                             $ 0.6