Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Property and equipment additions		$ 4,004	$ 1,591	$ 11,237	$ 5,511
Depreciation and amortization		3,563	3,119	10,536	8,769
Identifiable assets		621,512		621,512		$ 600,291
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		645	392	2,672	1,081
Depreciation and amortization		1,817	1,462	5,416	3,948
Identifiable assets		413,069		413,069		432,098
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		690	570	1,725	2,281
Depreciation and amortization		1,148	1,109	3,398	3,217
Identifiable assets		166,933		166,933		147,740
Corporate Segment and Other Operating Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		2,669	629	6,840	2,149
Depreciation and amortization		598	$ 548	1,722	$ 1,604
Identifiable assets	[1]	$ 41,509		$ 41,509		$ 20,453

[1] Corporate and Other assets consist primarily of cash and income tax related assets.