Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 422,627	$ 324,140	$ 316,011
Cost of sales	294,402	223,218	210,883
Gross profit	128,225	100,922	105,128
Selling and administrative expenses	93,473	81,797	76,926
Amortization and earnout expenses	6,809	7,789	8,799
Acquisition and integration expenses	4,546	818	1,354
Executive transition expenses	1,161	29	1,522
Restructuring expenses	75	632	2,331
Intangible asset impairment			850
Income from operations	22,161	9,857	13,346
Other income (expense), net	6,947	(2,231)	2,033
Interest expense	(5,419)	(2,952)	(3,535)
Income before income taxes	23,689	4,674	11,844
Income tax expense	5,426	2,691	3,672
Net income	18,263	1,983	8,172
Noncontrolling interest	(846)	(557)	39
Net income (loss) attributable to CECO Environmental Corp.	$ 17,417	$ 1,426	$ 8,211
Income per share:
Basic	$ 0.50	$ 0.04	$ 0.23
Diluted	$ 0.50	$ 0.04	$ 0.23
Weighted average number of common shares outstanding:
Basic	34,672,007	35,345,785	35,289,616
Diluted	35,005,159	35,594,779	35,520,670