Revenue from Contracts with Customers - Summary of Geographic Disaggregation of Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Net sales	$ 675,276	$ 537,740
Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	468,266	370,936
Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	187,079	150,385
Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	19,931	16,419
North America [Member]
Disaggregation Of Revenue [Line Items]
Net sales	384,760	305,750
North America [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	273,228	220,935
North America [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	94,856	70,878
North America [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	16,676	13,937
Europe [Member]
Disaggregation Of Revenue [Line Items]
Net sales	174,932	141,876
Europe [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	91,017	71,094
Europe [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	80,783	68,300
Europe [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	3,132	2,482
Latin America [Member]
Disaggregation Of Revenue [Line Items]
Net sales	86,777	61,159
Latin America [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	85,434	60,169
Latin America [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1,220	990
Latin America [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	123
Asia [Member]
Disaggregation Of Revenue [Line Items]
Net sales	28,807	28,955
Asia [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	18,587	18,738
Asia [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 10,220	$ 10,217