Segment Reporting - Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Net sales	$ 556,405	$ 579,975	$ 1,107,823	$ 1,231,411
Surfactants [Member]
Segment Reporting Information [Line Items]
Net sales	379,795	391,686	770,615	859,514
Polymers [Member]
Segment Reporting Information [Line Items]
Net sales	159,757	164,515	305,265	325,642
Specialty Products [Member]
Segment Reporting Information [Line Items]
Net sales	$ 16,853	$ 23,774	$ 31,943	$ 46,255

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