Business Segment Information - Net Sales and Income from Operation by Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 80,486	$ 86,011
Income from operations	4,239	4,890
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income from operations	(7,414)	(7,361)
Energy Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	50,646	55,188
Income from operations	8,557	9,291
Industrial Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	20,356	18,853
Income from operations	1,473	602
Fluid Handling Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	9,484	11,970
Income from operations	$ 1,623	$ 2,358