Business Segment Information - Net Sales and Income from Operation by Business Segment (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales		$ 324,140	$ 316,011	$ 341,869
(Loss) income from operations		9,857	13,346	17,990
Corporate and Other [Member]
Segment Reporting Information [Line Items]
(Loss) income from operations	[1]	(30,967)	(28,044)	(27,133)
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales		186,926	205,494	210,319
(Loss) income from operations		25,770	34,170	33,886
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales		137,214	110,517	131,550
(Loss) income from operations		$ 15,054	$ 7,220	$ 11,237

[1] Includes corporate compensation, professional services, information technology, acquisition and integration expenses, and other general, administrative corporate expenses and loss on divestitures.