Revenue from Contracts with Customers - Summary of Geographic Disaggregation of Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Net sales	$ 556,405	$ 579,975	$ 1,107,823	$ 1,231,411
Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	379,795	391,686	770,615	859,514
Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	159,757	164,515	305,265	325,642
Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	16,853	23,774	31,943	46,255
North America [Member]
Disaggregation Of Revenue [Line Items]
Net sales	315,743	340,124	628,388	716,032
North America [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	220,520	231,477	450,110	508,617
North America [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	79,828	88,149	149,637	169,318
North America [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	15,395	20,498	28,641	38,097
Europe [Member]
Disaggregation Of Revenue [Line Items]
Net sales	132,183	137,812	268,673	302,860
Europe [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	63,460	68,742	134,238	159,861
Europe [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	67,401	65,896	131,278	134,953
Europe [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1,322	3,174	3,157	8,046
Latin America [Member]
Disaggregation Of Revenue [Line Items]
Net sales	84,031	78,592	162,325	160,485
Latin America [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	83,569	78,217	161,437	159,315
Latin America [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	326	273	743	1,058
Latin America [Member] | Specialty Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	136	102	145	112
Asia [Member]
Disaggregation Of Revenue [Line Items]
Net sales	24,448	23,447	48,437	52,034
Asia [Member] | Surfactants [Member]
Disaggregation Of Revenue [Line Items]
Net sales	12,246	13,250	24,830	31,721
Asia [Member] | Polymers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 12,202	$ 10,197	$ 23,607	$ 20,313