Goodwill and Intangible Assets - Goodwill / Tradename (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill, beginning balance	$ 152,020	$ 152,156
Goodwill, foreign currency translation	693	(136)
Goodwill, ending balance	161,820	152,020	$ 152,156
Goodwill, acquisitions	9,107
Tradename, beginning balance	14,291	18,258
Tradename, transfers to finite life classification	(700)	(3,904)
Tradename, impairment charges	(850)	0	0
Tradename, foreign currency adjustments	196	(63)
Tradename, ending balance	12,937	14,291	18,258
Energy Solutions Segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	97,007	97,143
Goodwill, foreign currency translation	693	(136)
Goodwill, ending balance	99,785	97,007	97,143
Goodwill, acquisitions	2,085
Industrial Solutions Segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	23,436	23,436
Goodwill, ending balance	30,458	23,436	23,436
Goodwill, acquisitions	7,022
Fluid Handling Solutions Segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	31,577	31,577
Goodwill, ending balance	$ 31,577	$ 31,577	$ 31,577