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Acquisitions - Summary of Purchase Price Allocation for Acquisition (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 17, 2020
Assets:
Goodwill	$ 98,212	$ 27,972
2020 Acquisitions [Member] \| Clariant (Mexico) [Member] \| Surfactants [Member]
Assets:
Goodwill			$ 5,165
Property, plant and equipment			175
Total assets acquired			14,940
Liabilities:
Other non-current liabilities			940
Total liabilities assumed			940
Net assets acquired			14,000
2020 Acquisitions [Member] \| Clariant (Mexico) [Member] \| Surfactants [Member] \| Customer Lists [Member}
Assets:
Identifiable intangible assets			8,000
2020 Acquisitions [Member] \| Clariant (Mexico) [Member] \| Surfactants [Member] \| Trademarks and Know-how [Member]
Assets:
Identifiable intangible assets			1,300
2020 Acquisitions [Member] \| Clariant (Mexico) [Member] \| Surfactants [Member] \| Non-Compete Agreement [Member]
Assets:
Identifiable intangible assets			$ 300