Business Segments - Business Segment Net Sales and (Loss) Income from Operations Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenue from External Customer [Line Items]
Net sales	$ 390,189	$ 344,920	[1]
Income (Loss) Before Income Taxes	5,556	(995)	[1]
Capital Expenditures	16,688	15,236	[2]
Depreciation and amortization	17,408	17,877	[1],[2]
Identifiable Assets	502,774	505,960	[3]
U.S. [Member]
Revenue from External Customer [Line Items]
Net sales	204,952	178,090
Income (Loss) Before Income Taxes	1,424	(9,314)
Foreign [Member]
Revenue from External Customer [Line Items]
Net sales	185,237	166,830
Income (Loss) Before Income Taxes	4,132	8,319
Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets		505,960
Long-lived Assets	269,225	295,159
Continuing Operations [Member] | U.S. [Member]
Revenue from External Customer [Line Items]
Long-lived Assets	202,860	218,712
Continuing Operations [Member] | Foreign [Member]
Revenue from External Customer [Line Items]
Long-lived Assets	66,365	76,447
Forged and Cast Engineered Products [Member] | Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets		331,598
Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	390,189	344,920
Income (Loss) Before Income Taxes	14,130	7,674
Operating Segments [Member] | Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	502,774
Operating Segments [Member] | Forged and Cast Engineered Products [Member]
Revenue from External Customer [Line Items]
Net sales	299,484	260,204
Income (Loss) Before Income Taxes	444	5,073
Capital Expenditures	15,312	14,929
Depreciation and amortization	16,730	17,051
Operating Segments [Member] | Forged and Cast Engineered Products [Member] | Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	327,277
Operating Segments [Member] | Air and Liquid Processing [Member]
Revenue from External Customer [Line Items]
Net sales	90,705	84,716
Income (Loss) Before Income Taxes	13,686	2,601
Capital Expenditures	1,376	307
Depreciation and amortization	667	749
Operating Segments [Member] | Air and Liquid Processing [Member] | Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	168,583	162,010
Corporate Costs, Including Other Income (Expense) [Member]
Revenue from External Customer [Line Items]
Income (Loss) Before Income Taxes	(8,574)	(8,669)
Depreciation and amortization	11	77
Corporate Costs, Including Other Income (Expense) [Member] | Continuing Operations [Member]
Revenue from External Customer [Line Items]
Identifiable Assets	$ 6,914	$ 12,352

[1] Costs of products sold (excluding depreciation and amortization) and subsequent subtotals and totals along with net loss per share for 2021 were adjusted to include inventory costs using the FIFO basis of costing. See Note 2.

[2] Net loss and the change in inventories for 2021 were adjusted to include inventory costs using the FIFO basis of costing. See Note 2.   See Notes to Consolidated Financial Statements.

[3] The December 31, 2021 balance sheet was adjusted to present inventory using the FIFO basis of costing. See Note 2.