Business Segments - Business Segment Net Sales and (Loss) Income from Continuing Operations Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Revenue from External Customer [Line Items]
Net sales	$ 397,904	$ 419,432
(Loss) Income from Continuing Operations Before Income Taxes and Gain on Sale of Joint Venture	(8,367)	(43,807)
Capital Expenditures	10,964	9,719
Depreciation and amortization	18,967	21,379
Identifiable Assets	506,560	571,119
U.S. [Member]
Revenue from External Customer [Line Items]
Net sales	192,845	209,536
(Loss) Income from Continuing Operations Before Income Taxes and Gain on Sale of Joint Venture	(13,996)	(48,234)
Foreign [Member]
Revenue from External Customer [Line Items]
Net sales	205,059	209,896
(Loss) Income from Continuing Operations Before Income Taxes and Gain on Sale of Joint Venture	5,629	4,427
Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	506,560	550,881
Long-Lived Assets	310,151	340,065
Continuing Operations [Member] \| U.S. [Member]
Revenue from External Customer [Line Items]
Long-Lived Assets	235,778	268,731
Continuing Operations [Member] \| Foreign [Member]
Revenue from External Customer [Line Items]
Long-Lived Assets	74,373	71,334
Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	397,904	419,432
(Loss) Income from Continuing Operations Before Income Taxes and Gain on Sale of Joint Venture	3,872	(28,734)
Corporate Costs, Including Other Income (Expense) [Member]
Revenue from External Customer [Line Items]
Net sales	0	0
(Loss) Income from Continuing Operations Before Income Taxes and Gain on Sale of Joint Venture	(12,239)	(15,073)
Capital Expenditures	0	7
Depreciation and amortization	186	194
Corporate Costs, Including Other Income (Expense) [Member] \| Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	7,984	15,415
Forged and Cast Engineered Products [Member] \| Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	305,630	329,530
(Loss) Income from Continuing Operations Before Income Taxes and Gain on Sale of Joint Venture	(6,130)	(6,605)
Capital Expenditures	10,586	8,801
Depreciation and amortization	17,818	20,189
Forged and Cast Engineered Products [Member] \| Operating Segments [Member] \| Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	325,584	348,017
Air and Liquid Processing [Member] \| Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	92,274	89,902
(Loss) Income from Continuing Operations Before Income Taxes and Gain on Sale of Joint Venture	10,002	(22,129)
Capital Expenditures	378	911
Depreciation and amortization	963	996
Air and Liquid Processing [Member] \| Operating Segments [Member] \| Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	$ 172,992	$ 187,449

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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