Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Net sales	$ 108,414	$ 79,979	$ 306,225	$ 230,551
Energy Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(169)	(17)	(367)	(985)
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	65,630	44,779	189,938	130,196
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	42,784	35,200	116,287	100,355
Industrial Process Solutions Segment [Member] | Energy Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(169)	(17)	(367)	(985)
Intra-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(4,030)	(780)	(15,161)	(14,722)
Intra-Segment Sales [Member] | Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(2,904)	(472)	(10,693)	(6,359)
Intra-Segment Sales [Member] | Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(1,126)	(308)	(4,468)	(8,363)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	112,817	81,084	322,214	246,807
Operating Segments [Member] | Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	68,738	45,559	201,092	137,104
Operating Segments [Member] | Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	44,079	35,525	121,122	109,703
Inter-Segment Elimination [Member] | Industrial Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(204)	(308)	(461)	(549)
Inter-Segment Elimination [Member] | Engineered Systems Segment [Member] | Industrial Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	$ (204)	$ (308)	$ (461)	$ (549)