Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 129,181	$ 105,375	$ 241,744	$ 197,811
Cost of sales	89,364	73,700	167,034	139,708
Gross profit	39,817	31,675	74,710	58,103
Selling and administrative expenses	28,451	22,988	55,644	41,640
Amortization and earnout expenses	2,273	1,450	4,020	2,900
Acquisition and integration expenses	332	1,491	824	2,540
Executive Transition Expenses	158		158
Restructuring expenses				73
Income (loss) from operations	8,603	5,746	14,064	10,950
Other income (expense), net	121	1,936	(453)	1,478
Interest expense	(3,750)	(1,098)	(6,158)	(1,920)
Income (loss) before income taxes	4,974	6,584	7,453	10,508
Income tax expense	984	1,860	993	2,972
Net income (loss)	3,990	4,724	6,460	7,536
Non-controlling interest	266	339	759	356
Net income (loss) attributable to CECO Environmental Corp.	$ 3,724	$ 4,385	$ 5,701	$ 7,180
Earnings (loss) per share:
Basic	$ 0.11	$ 0.13	$ 0.17	$ 0.21
Diluted	$ 0.11	$ 0.13	$ 0.16	$ 0.20
Weighted average number of common shares outstanding:
Basic	34,619,216	34,873,238	34,531,050	34,961,645
Diluted	35,143,782	35,041,152	35,171,727	35,119,685