Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Net sales	$ 105,375	$ 78,680	$ 197,811	$ 150,572
Energy Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	142	(644)	(198)	(968)
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	67,333	43,360	124,308	85,417
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	38,042	35,320	73,503	65,155
Industrial Process Solutions Segment [Member] | Energy Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(142)	(644)	(198)	(968)
Intra-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(4,948)	(8,794)	(11,131)	(13,942)
Intra-Segment Sales [Member] | Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(3,231)	(3,513)	(7,789)	(5,887)
Intra-Segment Sales [Member] | Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(1,717)	(5,281)	(3,342)	(8,055)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	110,655	88,314	209,397	165,723
Operating Segments [Member] | Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	70,754	47,069	132,354	91,545
Operating Segments [Member] | Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	39,901	41,245	77,043	74,178
Inter-Segment Elimination [Member] | Industrial Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(190)	(196)	(257)	(241)
Inter-Segment Elimination [Member] | Engineered Systems Segment [Member] | Industrial Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	$ (190)	$ (196)	$ (257)	$ (241)