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Revenue from Contracts with Customers - Summary of Geographic Disaggregation of Net Sales (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | $ 451,582 | $ 507,997 | $ 1,413,755 | $ 1,527,198
North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 277,231 | 309,629 | 873,097 | 941,991
Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 99,781 | 116,490 | 318,045 | 354,827
Latin America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 52,732 | 59,538 | 159,148 | 159,265
Asia [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 21,838 | 22,340 | 63,465 | 71,115
Surfactants [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 299,719 | 346,884 | 962,749 | 1,062,708
Surfactants [Member] | North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 178,799 | 205,032 | 584,816 | 643,466
Surfactants [Member] | Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 57,190 | 68,120 | 183,028 | 212,556
Surfactants [Member] | Latin America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 51,940 | 58,560 | 156,709 | 156,827
Surfactants [Member] | Asia [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 11,790 | 15,172 | 38,196 | 49,859
Polymers [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 135,089 | 141,646 | 395,904 | 404,446
Polymers [Member] | North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 84,397 | 87,720 | 242,154 | 248,160
Polymers [Member] | Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 39,852 | 45,780 | 126,042 | 132,592
Polymers [Member] | Latin America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 792 | 978 | 2,439 | 2,438
Polymers [Member] | Asia [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 10,048 | 7,168 | 25,269 | 21,256
Specialty Products [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 16,774 | 19,467 | 55,102 | 60,044
Specialty Products [Member] | North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 14,035 | 16,877 | 46,127 | 50,365
Specialty Products [Member] | Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 2,739 | 2,590 | 8,975 | 9,679
Specialty Products [Member] | Latin America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 0 | 0 | 0 | 0
Specialty Products [Member] | Asia [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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