Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Line Items]
Goodwill	$ 92,570,000	$ 91,368,000	$ 97,442,000
Goodwill impairment	6,245,000
Goodwill and other intangibles impairment	6,245,000		2,038,000
Amortization of Intangible Assets, Total	6,555,000	6,914,000	7,368,000
Specialty Products [Member]
Goodwill [Line Items]
Goodwill		0	0
Goodwill impairment			483,000
Goodwill and other intangibles impairment			495,000
Surfactants Segment [Member]
Goodwill [Line Items]
Goodwill	16,482,000	$ 20,971,000	24,276,000
Goodwill impairment	6,245,000
Colombia Reporting Unit [Member] | Surfactants Segment [Member]
Goodwill [Line Items]
Goodwill impairment			$ 1,060,000
Mexico Reporting Unit [Member]
Goodwill [Line Items]
Goodwill impairment	6,245,000
European Polymers Reporting Unit [Member]
Goodwill [Line Items]
Goodwill	47,846,000
Goodwill impairment	$ 0