Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Property and equipment additions		$ 2,162	$ 767	$ 3,919	$ 1,432
Depreciation and amortization		2,765	2,379	5,650	4,668
Identifiable assets		582,618		582,618		$ 504,721
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		444	27	688	32
Depreciation and amortization		1,274	960	2,486	1,855
Identifiable assets		406,289		406,289		332,820
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		312	340	1,711	412
Depreciation and amortization		949	1,009	2,107	2,059
Identifiable assets		154,610		154,610		150,458
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		1,406	400	1,520	988
Depreciation and amortization		542	$ 410	1,057	$ 754
Identifiable assets	[1]	$ 21,719		$ 21,719		$ 21,443

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