Revenue from Contracts with Customers - Summary of Geographic Disaggregation of Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation Of Revenue [Line Items]
Net sales	$ 579,975	$ 751,633	$ 1,231,411	$ 1,426,909
Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	391,686	485,084	859,514	953,350
Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	164,515	238,885	325,642	425,964
Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	23,774	27,664	46,255	47,595
North America [Member]
Disaggregation Of Revenue [Line Items]
Net sales	340,124	434,769	716,032	819,529
North America [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	231,477	278,310	508,617	551,538
North America [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	88,149	133,455	169,318	228,311
North America [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	20,498	23,004	38,097	39,680
Europe [Member]
Disaggregation Of Revenue [Line Items]
Net sales	137,812	191,136	302,860	366,068
Europe [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	68,742	92,591	159,861	183,608
Europe [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	65,896	94,424	134,953	175,207
Europe [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	3,174	4,121	8,046	7,253
Latin America [Member]
Disaggregation Of Revenue [Line Items]
Net sales	78,592	99,675	160,485	186,452
Latin America [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	78,217	97,987	159,315	183,421
Latin America [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	273	1,149	1,058	2,369
Latin America [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	102	539	112	662
Asia [Member]
Disaggregation Of Revenue [Line Items]
Net sales	23,447	26,053	52,034	54,860
Asia [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	13,250	16,196	31,721	34,783
Asia [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 10,197	$ 9,857	$ 20,313	$ 20,077