Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Property and equipment additions		$ 2,513	$ 665
Depreciation and amortization		2,885	2,288
Identifiable assets		567,568		$ 504,721
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		244	5
Depreciation and amortization		1,212	895
Identifiable assets		394,204		332,820
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		1,399	73
Depreciation and amortization		1,158	1,050
Identifiable assets		153,647		150,458
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		870	587
Depreciation and amortization		515	$ 343
Identifiable assets	[1]	$ 19,717		$ 21,443

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