Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 92,436	$ 71,892
Cost of sales	66,008	47,485
Gross profit	26,428	24,407
Selling and administrative expenses	18,652	19,454
Amortization and earnout expenses	1,452	1,791
Restructuring expenses	73
Acquisition and integration expenses	1,049	108
(Loss) income from operations	5,202	3,054
Other income (expense), net	(458)	(480)
Interest expense	(822)	(725)
(Loss) income before income taxes	3,922	1,849
Income tax expense	1,112	551
Net (loss) income	2,810	1,298
Noncontrolling interest	(18)	(117)
Net (loss) income attributable to CECO Environmental Corp.	$ 2,792	$ 1,181
(Loss) earnings per share:
Basic	$ 0.08	$ 0.03
Diluted	$ 0.08	$ 0.03
Weighted average number of common shares outstanding:
Basic	35,051,034	35,396,705
Diluted	35,199,201	35,774,208