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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 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 ($)	Mar. 13, 2020	Dec. 17, 2019	Jun. 30, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill			$ 22,712,000	$ 26,086,000
Logos Technologies LLC's Nat Sur Fact Business [Member] \| Surfactants [Member] \| 2020 Acquisition [Member]
Business Acquisition [Line Items]
Paid from cash on hand	$ 2,040,000
Logos Technologies LLC's Nat Sur Fact Business [Member] \| Surfactants [Member] \| 2020 Acquisition [Member] \| Trademarks and Know-how [Member]
Business Acquisition [Line Items]
Intangible assets acquired	1,392,000
Logos Technologies LLC's Nat Sur Fact Business [Member] \| Surfactants [Member] \| 2020 Acquisition [Member] \| Patents [Member]
Business Acquisition [Line Items]
Intangible assets acquired	464,000
Logos Technologies LLC's Nat Sur Fact Business [Member] \| Surfactants [Member] \| 2020 Acquisition [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