Segment Reporting - Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Net sales	$ 719,185	$ 602,688	$ 2,146,094	$ 1,735,939
Surfactants [Member]
Segment Reporting Information [Line Items]
Net sales	474,861	387,734	1,428,211	1,142,672
Polymers [Member]
Segment Reporting Information [Line Items]
Net sales	214,807	198,841	640,771	539,764
Specialty Products [Member]
Segment Reporting Information [Line Items]
Net sales	$ 29,517	$ 16,113	$ 77,112	$ 53,503