Nature of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash Reported within Consolidated Statements of Cash Flows

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Consolidated Statements of Cash Flows.

	December 31,
	2021		2020
Cash and cash equivalents	$	29,902	$	35,992
Restricted cash		2,093	$	1,819
Total cash, cash equivalents and restricted cash	$	31,995	$	37,811

Schedule of Numerators and Denominators Used to Calculate Basic and Diluted Earnings Per Share

Earnings per share—The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share for 2021, 2020 and 2019.

	For the Year Ended December 31
	2021		2020		2019
(table only in thousands)
Numerator (for basic and diluted earnings per share)
Net income attributable to CECO Environmental Corp.	$	1,426	$	8,211	$	17,707
Denominator
Basic weighted-average shares outstanding		35,346		35,290		34,988
Common stock equivalents arising from stock options and restricted stock awards		249		231		496
Diluted weighted-average shares outstanding		35,595		35,521		35,484