Business Segments - Business Segment Net Sales and (Loss) Income from Continuing Operations Before Income Taxes (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 USD ($) Customer
Revenue from External Customer [Line Items]
Impairment charge	$ 10,082,000	$ 0
Investments in joint ventures	2,175,000	2,175,000
Noncurrent asbestos-related insurance receivables	$ 120,932,000	$ 135,508,000
Forged and Cast Engineered Products [Member]
Revenue from External Customer [Line Items]
Number of customers accounted for net sales \| Customer	1	0
Investments in joint ventures	$ 2,175	$ 2,175
Forged and Cast Engineered Products [Member] \| Akers National Roll Company [Member]
Revenue from External Customer [Line Items]
Impairment charge	$ 10,082
Forged and Cast Engineered Products [Member] \| Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Revenue from External Customer [Line Items]
Net sales	12.00%	10.00%
Air and Liquid Processing [Member]
Revenue from External Customer [Line Items]
Number of customers accounted for net sales \| Customer	1	1
Estimated costs of asbestos-related litigation, net of estimated insurance recoveries		$ 32,910
Air and Liquid Processing [Member] \| U.S. [Member]
Revenue from External Customer [Line Items]
Change in the identifiable assets of the Air and Liquid / Long-lived assets	$ 136,932	$ 152,508
Air and Liquid Processing [Member] \| Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Revenue from External Customer [Line Items]
Net sales	12.00%	13.00%

The number of customers who represented at least 10% of a segment's sales.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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-Name Accounting Standards Codification
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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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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.

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No definition available.

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- Definition

Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

+ References

No definition available.

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Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

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- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

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- Definition

Amount, after effects of reinsurance, of expense for claims incurred and costs incurred in the claim settlement process attributable to asbestos and environmental claims.

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