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The cash outflow to acquire intangibles and property, plant and equipment.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Acquisitions - Additional Information (Detail) - USD ($)					9 Months Ended
	Sep. 30, 2020	Sep. 17, 2020	Mar. 13, 2020	Dec. 17, 2019	Sep. 30, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Paid from cash on hand					$ 13,519,000
Paid from cash on hand, assets acquired					2,040,000
Goodwill	$ 27,152,000				$ 27,152,000	$ 26,086,000
Clariant (Mexico) S.A. de C.V. [Member] \| Surfactants [Member] \| 2020 Acquisitions [Member]
Business Acquisition [Line Items]
Purchase price		$ 14,000,000
Paid from cash on hand	13,519,000
Payment of VAT	$ 308,000
Goodwill		4,595,000
Clariant (Mexico) S.A. de C.V. [Member] \| Surfactants [Member] \| 2020 Acquisitions [Member] \| Trademarks and Know-how [Member]
Business Acquisition [Line Items]
Intangible assets identified related to acquisition		$ 2,802,000
Logos Technologies Asset Acquisition [Member] \| Surfactants [Member] \| 2020 Acquisitions [Member]
Business Acquisition [Line Items]
Paid from cash on hand, assets acquired			$ 2,040,000
Logos Technologies Asset Acquisition [Member] \| Surfactants [Member] \| 2020 Acquisitions [Member] \| Trademarks and Know-how [Member]
Business Acquisition [Line Items]
Intangible assets acquired			1,392,000
Logos Technologies Asset Acquisition [Member] \| Surfactants [Member] \| 2020 Acquisitions [Member] \| Patents [Member]
Business Acquisition [Line Items]
Intangible assets acquired			464,000
Logos Technologies Asset Acquisition [Member] \| Surfactants [Member] \| 2020 Acquisitions [Member] \| Laboratory Equipment [Member]
Business Acquisition [Line Items]
Equipment acquired			$ 184,000
Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| 2019 Acquisition [Member]
Business Acquisition [Line Items]
Paid from cash on hand				$ 9,000,000
Goodwill				$ 3,161,000
Weighted average amortization periods of identifiable intangibles assets				20 years
Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| 2019 Acquisition [Member] \| Product Know-how [Member]
Business Acquisition [Line Items]
Intangible assets identified related to acquisition				$ 3,300,000
Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| 2019 Acquisition [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets identified related to acquisition				$ 1,900,000