Goodwill and Intangible Assets - Goodwill / Tradename (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill, beginning balance	$ 161,820,000	$ 152,020,000
Goodwill, acquisitions		9,107,000
Goodwill, foreign currency translation	(637,000)	693,000
Goodwill, ending balance	161,183,000	161,820,000	$ 152,020,000
Tradename, beginning balance	12,937,000	14,291,000
Tradename, transfers to finite life classification	(3,150,000)	(700,000)
Tradename, impairment charges	0	(850,000)	0
Tradename, foreign currency adjustments	(158,000)	196,000
Tradename, ending balance	9,629,000	12,937,000	14,291,000
Engineered Systems segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	99,785,000	97,007,000
Goodwill, acquisitions		2,085,000
Goodwill, foreign currency translation	(482,000)	693,000
Goodwill, ending balance	99,303,000	99,785,000	97,007,000
Industrial Process Solutions segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	62,035,000	55,013,000
Goodwill, acquisitions		7,022,000
Goodwill, foreign currency translation	(155,000)	0
Goodwill, ending balance	$ 61,880,000	$ 62,035,000	$ 55,013,000