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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 |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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