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Segment Reporting - Operating Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 452,414 | $ 504,111 | $ 912,865 | $ 981,553
Surfactants [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 299,743 | 333,761 | 630,294 | 669,471
Polymers [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 133,613 | 148,270 | 242,977 | 267,377
Specialty Products [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 19,058 | $ 22,080 | $ 39,594 | $ 44,705

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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