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v3.20.4

Segment Reporting - Operating Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |
Net sales | [1] | $ 1,869,750 | $ 1,858,745 | $ 1,993,857
Operating income |  | 171,522 | 127,260 | 149,265
Assets |  | 1,752,336 | 1,579,367 | 1,514,614
Capital expenditures |  | 125,792 | 105,572 | 86,647
Depreciation and amortization expenses |  | 81,860 | 78,701 | 81,115
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 1,869,750 | 1,858,745 | 1,993,857
Operating income |  | 251,281 | 208,762 | 211,552
Assets |  | 1,472,738 | 1,331,929 | 1,285,200
Capital expenditures |  | 121,163 | 103,354 | 84,398
Depreciation and amortization expenses |  | 77,988 | 76,056 | 78,917
Surfactants [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 1,351,686 | 1,272,723 | 1,385,932
Surfactants [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 1,351,686 | 1,272,723 | 1,385,932
Operating income |  | 169,101 | 122,780 | 133,518
Assets |  | 1,018,555 | 907,032 | 850,553
Capital expenditures |  | 88,484 | 69,725 | 51,543
Depreciation and amortization expenses |  | 49,429 | 48,422 | 50,514
Polymers [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 452,277 | 512,347 | 527,420
Polymers [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 452,277 | 512,347 | 527,420
Operating income |  | 68,214 | 69,567 | 66,373
Assets |  | 361,219 | 338,179 | 351,690
Capital expenditures |  | 26,719 | 29,188 | 26,663
Depreciation and amortization expenses |  | 22,873 | 22,151 | 23,253
Specialty Products [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 65,787 | 73,675 | 80,505
Specialty Products [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 65,787 | 73,675 | 80,505
Operating income |  | 13,966 | 16,415 | 11,661
Assets |  | 92,964 | 86,718 | 82,957
Capital expenditures |  | 5,960 | 4,441 | 6,192
Depreciation and amortization expenses |  | $ 5,686 | $ 5,483 | $ 5,150
[1] | Net sales are attributed to countries based on the location of the Company facility making the sales.

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