The number of positions eliminated during the period as a result of restructuring activities.

No definition available.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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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, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Business Restructuring - Additional Information (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) Employees	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring costs	$ 114,000	$ 225,000	$ 195,000	$ 582,000
2018 Restructuring [Member] \| Germany [Member] \| Surfactants [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring costs			2,392,000		$ 0
2018 Restructuring [Member] \| Germany [Member] \| Surfactants [Member] \| Decommissioning Costs [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring costs			79,000
2016 Restructuring [Member] \| Longford Mills [Member] \| Surfactants [Member]
Restructuring Cost And Reserve [Line Items]
Business restructuring			$ 8,812,000
Number positions eliminated \| Employees			30
2016 Restructuring [Member] \| Longford Mills [Member] \| Surfactants [Member] \| Decommissioning Costs [Member]
Restructuring Cost And Reserve [Line Items]
Business restructuring	$ 114,000	$ 225,000	$ 195,000	$ 503,000
2016 Restructuring [Member] \| Longford Mills [Member] \| Surfactants [Member] \| Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Business restructuring			1,644,000
2016 Restructuring [Member] \| Longford Mills [Member] \| Surfactants [Member] \| Other Expense [Member]
Restructuring Cost And Reserve [Line Items]
Business restructuring			$ 7,168,000