Life to date payments for environmental remediation response activities.

No definition available.

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- Definition

Site contingency maximum future response cost percentage.

+ References

No definition available.

+ Details

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- Definition

Amount of loss contingency liability.

+ References

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-SubTopic 20
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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
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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.

+ Details

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Contingencies - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Site Contingency [Line Items]
Environmental losses accrual	$ 22,892,000		$ 22,884,000
Cash expenditures related to legal matters and environmental matters	$ 2,530,000	$ 3,781,000
Contribution for future response costs	5.00%
Wilmington Site [Member]
Site Contingency [Line Items]
Payment of environmental response costs	$ 3,149,000
Minimum [Member]
Site Contingency [Line Items]
Environmental losses and legal losses	22,892,000
Maximum [Member]
Site Contingency [Line Items]
Environmental losses and legal losses	$ 41,264,000