Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net sales	$ 108,414	$ 79,979	$ 306,225	$ 230,551
Cost of sales	75,988	57,254	215,696	158,164
Gross profit	32,426	22,725	90,529	72,387
Selling and administrative expenses	25,166	20,929	66,806	60,894
Amortization and earnout expenses	2,039	1,776	4,939	5,849
Restructuring expenses	0	397	73	655
Acquisition and integration expenses	1,287	219	3,827	357
Executive transition expenses	1,161	0	1,161	29
Income (loss) from operations	2,773	(596)	13,723	4,603
Other income (expense), net	1,276	185	2,754	(1,155)
Interest expense	(1,569)	(722)	(3,489)	(2,152)
Income (loss) before income taxes	2,480	(1,133)	12,988	1,296
Income tax expense	314	63	3,287	813
Net income (loss)	2,166	(1,196)	9,701	483
Non-controlling interest	223	53	579	259
Net income (loss) attributable to CECO Environmental Corp.	$ 1,943	$ (1,249)	$ 9,122	$ 224
Earnings (loss) per share:
Basic	$ 0.06	$ (0.04)	$ 0.26	$ 0.01
Diluted	$ 0.06	$ (0.04)	$ 0.26	$ 0.01
Weighted average number of common shares outstanding:
Basic	34,455,657	35,472,298	34,791,129	35,463,279
Diluted	34,871,313	35,472,298	35,035,041	35,729,887