Segment Reporting - Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 675,276	$ 537,740
Surfactants [Member]
Segment Reporting Information [Line Items]
Net sales	468,266	370,936
Polymers [Member]
Segment Reporting Information [Line Items]
Net sales	187,079	150,385
Specialty Products [Member]
Segment Reporting Information [Line Items]
Net sales	$ 19,931	$ 16,419

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.

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+ Details