Business combination area of space expected to be acquired.

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- Definition

Business combination capacity of production facility expected to be acquired.

+ References

No definition available.

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- Definition

Business combination incremental inventory and related value added taxes.

+ References

No definition available.

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- Definition

Payment of incremental inventory and related value added taxes.

+ References

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Topic 350
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of assets acquired at the acquisition date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

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- Definition

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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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Acquisitions - Additional Information (Detail)			3 Months Ended	12 Months Ended
Acquisitions - Additional Information (Detail)	Dec. 17, 2019 USD ($)	Mar. 26, 2018 USD ($) ft² T	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Business Acquisition [Line Items]
Paid from cash on hand				$ 9,000,000	$ 22,852,000	$ 4,339,000
Goodwill			$ (22,954,000)	(26,086,000)	(22,954,000)	(25,118,000)
Surfactants [Member]
Business Acquisition [Line Items]
Goodwill			(17,054,000)	(20,197,000)	$ (17,054,000)	$ (19,160,000)
2019 Acquisition [Member] \| Oilfield Demulsifier Product Line [Member] \| Surfactants [Member]
Business Acquisition [Line Items]
Paid from cash on hand	$ 9,000,000
Goodwill	(3,497,000)
2019 Acquisition [Member] \| Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| Product Know-how [Member]
Business Acquisition [Line Items]
Intangible assets identified related to acquisition	(1,500,000)
2019 Acquisition [Member] \| Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets identified related to acquisition	$ (3,200,000)
2019 Acquisition [Member] \| Minimum [Member] \| Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| Product Know-how [Member]
Business Acquisition [Line Items]
Weighted average amortization periods of identifiable intangibles assets	13 years
2019 Acquisition [Member] \| Minimum [Member] \| Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| Customer List [Member]
Business Acquisition [Line Items]
Weighted average amortization periods of identifiable intangibles assets	22 years
2019 Acquisition [Member] \| Maximum [Member] \| Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| Product Know-how [Member]
Business Acquisition [Line Items]
Weighted average amortization periods of identifiable intangibles assets	14 years
2019 Acquisition [Member] \| Maximum [Member] \| Oilfield Demulsifier Product Line [Member] \| Surfactants [Member] \| Customer List [Member]
Business Acquisition [Line Items]
Weighted average amortization periods of identifiable intangibles assets	25 years
2018 Acquisition [Member] \| BASF Mexicana, S.A. DE C.V. [Member]
Business Acquisition [Line Items]
Total assets acquired		$ 22,852,000
2018 Acquisition [Member] \| BASF Mexicana, S.A. DE C.V. [Member] \| Surfactants [Member] \| Ecatepec, Mexico [Member]
Business Acquisition [Line Items]
Paid from cash on hand		21,475,000
Intangible assets identified related to acquisition		$ 0
Incremental inventory and related value-added taxes				1,377,000
Capacity of production facility expected to be acquired \| T		50,000
Warehouse space, laboratory and office space currently expected to be acquired \| ft²		124,000
Total assets acquired				$ 22,852,000
Payment of incremental inventory and related value-added taxes			$ 1,377,000