Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Value of Goodwill (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill, Beginning Balance		$ 31,439	$ 29,553
Accumulated impairment loss, Beginning Balance		(3,467)	(3,467)
Goodwill net, Beginning Balance		27,972	26,086
Goodwill acquired	[1]	72,467	4,225
Goodwill measurement period adjustment	[1]	940	(336)
Foreign currency translation		(4,192)	(2,003)
Goodwill, Ending Balance		100,654	31,439
Accumulated impairment loss, Ending Balance		(3,467)	(3,467)
Goodwill net, Ending Balance		97,187	27,972
Surfactants Segment [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance		25,537	23,664
Accumulated impairment loss, Beginning Balance		(3,467)	(3,467)
Goodwill net, Beginning Balance		22,070	20,197
Goodwill acquired	[1]		4,225
Goodwill measurement period adjustment	[1]	940	(336)
Foreign currency translation		(788)	(2,016)
Goodwill, Ending Balance		25,689	25,537
Accumulated impairment loss, Ending Balance		(3,467)	(3,467)
Goodwill net, Ending Balance		22,222	22,070
Polymer Segment [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance		5,419	5,406
Goodwill net, Beginning Balance		5,419	5,406
Goodwill acquired	[1]	72,467
Foreign currency translation		(3,404)	13
Goodwill, Ending Balance		74,482	5,419
Goodwill net, Ending Balance		74,482	5,419
Specialty Products Segment [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance		483	483
Goodwill net, Beginning Balance		483	483
Goodwill, Ending Balance		483	483
Goodwill net, Ending Balance		$ 483	$ 483

[1] See Note 20, Acquisitions, of the notes to the Company’s consolidated financial statements (included in Item 8 of this Form 10-K) for information regarding the goodwill acquired in a business combination.