CECO Environmental (CECO) 10-Q 3 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 30, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Trading Symbol	CECE
Entity Registrant Name	CECO ENVIRONMENTAL CORP
Entity Central Index Key	0000003197
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity File Number	0-07099
Entity Tax Identification Number	13-2566064
Entity Address, Address Line One	14651 North Dallas Parkway
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75254
City Area Code	214
Local Phone Number	357-6181
Entity Common Stock, Shares Outstanding		35,771,283
Entity Interactive Data Current	Yes
Entity Small Business	true
Entity Emerging Growth Company	false
Document Transition Report	false
Document Quarterly Report	true
Entity Shell Company	false
Title of 12(b) Security	Common Stock, par value $0.01 per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 32,229	$ 35,992
Restricted cash	2,291	1,819
Accounts receivable, net	65,650	63,046
Costs and estimated earnings in excess of billings on uncompleted contracts	46,839	45,498
Inventories, net	17,271	17,343
Prepaid expenses and other current assets	12,729	11,530
Prepaid income taxes	3,216	7,790
Assets held for sale		467
Total current assets	180,225	183,485
Property, plant and equipment, net	15,895	16,228
Right-of-use assets from operating leases	10,420	11,376
Goodwill	161,782	161,820
Intangible assets – finite life, net	29,369	29,637
Intangible assets – indefinite life	9,738	12,937
Deferred charges and other assets	3,273	3,831
Total assets	410,702	419,314
Current liabilities:
Current portion of debt	3,750	3,125
Accounts payable and accrued expenses	81,938	84,997
Billings in excess of costs and estimated earnings on uncompleted contracts	19,232	20,691
Income taxes payable		543
Total current liabilities	104,920	109,356
Other liabilities	19,645	20,576
Debt, less current portion	63,720	69,491
Deferred income tax liability, net	7,100	6,970
Operating lease liabilities	8,484	9,310
Total liabilities	203,869	215,703
Commitments and contingencies
Shareholders’ equity:
Preferred stock, $.01 par value; 10,000 shares authorized, none issued
Common stock, $.01 par value; 100,000,000 shares authorized, 35,749,488 and 35,504,757 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively	357	355
Capital in excess of par value	256,598	255,296
Accumulated loss	(36,667)	(38,141)
Accumulated other comprehensive loss	(14,151)	(14,496)
Stockholders' equity before treasury stock	206,137	203,014
Less treasury stock, at cost, 137,920 shares at June 30, 2021 and December 31, 2020	(356)	(356)
Total CECO shareholders' equity	205,781	202,658
Noncontrolling interest	1,052	953
Total shareholders' equity	206,833	203,611
Total liabilities and shareholders' equity	$ 410,702	$ 419,314

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	35,749,488	35,504,757
Common Stock, shares outstanding	35,749,488	35,504,757
Treasury stock, shares	137,920	137,920

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 78,680	$ 75,170	$ 150,572	$ 155,656
Cost of sales	53,426	49,354	100,910	101,561
Gross profit	25,254	25,816	49,662	54,095
Selling and administrative expenses	20,510	18,407	39,965	40,383
Amortization and earnout expenses	2,282	1,785	4,072	3,498
Restructuring expenses	280	530	280	882
Acquisition and integration expenses	37	699	146	699
Income from operations	2,145	4,395	5,199	8,633
Other (expense) income, net	(860)	371	(1,339)	1,347
Interest expense	(704)	(944)	(1,430)	(1,967)
Income before income taxes	581	3,822	2,430	8,013
Income tax expense	199	564	750	1,343
Net income	382	3,258	1,680	6,670
Noncontrolling interest	89		206
Net income attributable to CECO Environmental Corp.	$ 293	$ 3,258	$ 1,474	$ 6,670
Earnings per share:
Basic	$ 0.01	$ 0.09	$ 0.04	$ 0.19
Diluted	$ 0.01	$ 0.09	$ 0.04	$ 0.19
Weighted average number of common shares outstanding:
Basic	35,491,725	35,275,729	35,444,477	35,215,553
Diluted	35,819,269	35,410,182	35,797,001	35,402,524

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 382	$ 3,258	$ 1,680	$ 6,670
Other comprehensive income (loss), net of tax:
Foreign currency translation gain (loss)	290	1,175	345	(1,093)
Comprehensive income	$ 672	$ 4,433	$ 2,025	$ 5,577

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Loss [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2019	$ 193,017	$ 353	$ 253,869	$ (46,344)	$ (14,505)	$ (356)
Beginning Balance, Shares at Dec. 31, 2019		35,275,000				(138,000)
Net income	3,412			3,412
Restricted stock units issued	(152)	$ 1	(153)
Restricted stock units issued, Shares		63,000
Share based compensation earned	597		597
Translation gain (loss)	(2,268)				(2,268)
Ending Balance at Mar. 31, 2020	194,606	$ 354	254,313	(42,932)	(16,773)	$ (356)
Ending Balance, Shares at Mar. 31, 2020		35,338,000				(138,000)
Beginning Balance at Dec. 31, 2019	193,017	$ 353	253,869	(46,344)	(14,505)	$ (356)
Beginning Balance, Shares at Dec. 31, 2019		35,275,000				(138,000)
Net income	$ 6,670
Exercise of stock options, Shares	0
Translation gain (loss)	$ (1,093)
Ending Balance at Jun. 30, 2020	199,042	$ 355	254,323	(39,682)	(15,598)	$ (356)
Ending Balance, Shares at Jun. 30, 2020		35,493,000				(138,000)
Beginning Balance at Mar. 31, 2020	194,606	$ 354	254,313	(42,932)	(16,773)	$ (356)
Beginning Balance, Shares at Mar. 31, 2020		35,338,000				(138,000)
Net income	3,258			3,258
Restricted stock units issued	(151)	$ 1	(144)	(8)
Restricted stock units issued, Shares		155,000
Share based compensation earned	154		154
Translation gain (loss)	1,175				1,175
Ending Balance at Jun. 30, 2020	199,042	$ 355	254,323	(39,682)	(15,598)	$ (356)
Ending Balance, Shares at Jun. 30, 2020		35,493,000				(138,000)
Beginning Balance at Dec. 31, 2020	203,611	$ 355	255,296	(38,141)	(14,496)	$ (356)	$ 953
Beginning Balance, Shares at Dec. 31, 2020		35,505,000				(138,000)
Net income	1,298			1,181			117
Exercise of stock options	13		13
Exercise of stock options, Shares		2,000
Restricted stock units issued	(133)	$ 1	(134)
Restricted stock units issued, Shares		40,000
Share based compensation earned	807		807
Share based compensation earned, Shares		21,000
Translation gain (loss)	55				55
Ending Balance at Mar. 31, 2021	205,651	$ 356	255,982	(36,960)	(14,441)	$ (356)	1,070
Ending Balance, Shares at Mar. 31, 2021		35,568,000				(138,000)
Beginning Balance at Dec. 31, 2020	203,611	$ 355	255,296	(38,141)	(14,496)	$ (356)	953
Beginning Balance, Shares at Dec. 31, 2020		35,505,000				(138,000)
Net income	$ 1,680
Exercise of stock options, Shares	2,000
Translation gain (loss)	$ 345
Ending Balance at Jun. 30, 2021	206,833	$ 357	256,598	(36,667)	(14,151)	$ (356)	1,052
Ending Balance, Shares at Jun. 30, 2021		35,749,000				(138,000)
Beginning Balance at Mar. 31, 2021	205,651	$ 356	255,982	(36,960)	(14,441)	$ (356)	1,070
Beginning Balance, Shares at Mar. 31, 2021		35,568,000				(138,000)
Net income	382			293			89
Restricted stock units issued	(270)	$ 1	(271)
Restricted stock units issued, Shares		181,000
Share based compensation earned	887		887
Translation gain (loss)	290				290
Noncontrolling interest distribution	(107)						(107)
Ending Balance at Jun. 30, 2021	$ 206,833	$ 357	$ 256,598	$ (36,667)	$ (14,151)	$ (356)	$ 1,052
Ending Balance, Shares at Jun. 30, 2021		35,749,000				(138,000)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 1,680	$ 6,670
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	4,906	4,648
Unrealized foreign currency loss (gain)	1,628	(52)
Fair value adjustment to earnout liabilities	500
Gain on sale of property and equipment	(67)
Debt discount amortization	203	208
Share-based compensation expense	1,581	751
Bad debt expense	110	457
Inventory reserve expense	209	269
Changes in operating assets and liabilities, net of divestitures:
Accounts receivable	(2,638)	8,623
Costs and estimated earnings in excess of billings on uncompleted contracts	(1,319)	(3,446)
Inventories	(409)	1,694
Prepaid expense and other current assets	3,642	(1,068)
Deferred charges and other assets	(496)	(1,553)
Accounts payable and accrued expenses	(2,784)	(5,229)
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,490)	(10,057)
Income taxes payable	(508)
Other liabilities	(639)	193
Net cash provided by operating activities	4,109	2,108
Cash flows from investing activities:
Acquisitions of property and equipment	(997)	(1,992)
Net proceeds from sale of assets	534
Net cash paid for acquisition		(6,124)
Net cash used in investing activities	(463)	(8,116)
Cash flows from financing activities:
Borrowings on revolving credit lines	18,200	72,500
Repayments on revolving credit lines	(22,300)	(59,000)
Repayments of long-term debt	(1,250)	(1,250)
Payments on finance leases and financing liability	(271)	(203)
Earnout payments	(823)
Proceeds from employee stock purchase plan and exercise of stock options	128
Noncontrolling interest distribution	(107)
Net cash (used in) provided by financing activities	(6,423)	12,047
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(514)	141
Net (decrease) increase in cash, cash equivalents and restricted cash	(3,291)	6,180
Cash, cash equivalents and restricted cash at beginning of period	37,811	36,958
Cash, cash equivalents and restricted cash at end of period	34,520	43,138
Cash paid (received) during the period for:
Interest	1,122	1,850
Income taxes	$ (3,006)	$ (658)

Basis of Reporting for Consolid

Basis of Reporting for Consolidated Financial Statements	6 Months Ended
	Jun. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Reporting for Consolidated Financial Statements	1. Basis of Reporting for Consolidated Financial Statements The accompanying unaudited condensed consolidated financial statements of CECO Environmental Corp. and its subsidiaries (the “Company”, “CECO”, “we”, “us”, or “our”) have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, the accompanying unaudited condensed consolidated financial statements of the Company contain all adjustments (consisting only of normal recurring adjustments) necessary to present fairly the financial position as of June 30, 2021 and the results of operations, cash flows and shareholders’ equity for the three-month and six-month periods ended June 30, 2021 and 2020. The results of operations for the three-month and six-month periods ended June 30, 2021 are not necessarily indicative of the results to be expected for the full year. The balance sheet as of December 31, 2020 has been derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 as filed with the SEC on March 3, 2021 (the “Form 10-K”). The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. These financial statements and accompanying notes should be read in conjunction with the audited financial statements and the notes thereto included in the Form 10-K. Unless otherwise indicated, all balances within tables are in thousands, except per share amounts. COVID-19 A novel strain of coronavirus (“COVID-19”) surfaced in late 2019 and has spread around the world, including to the United States. In March 2020, the World Health Organization characterized COVID-19 as a pandemic. As of July 31, 2021, the virus continues to spread and has had a significant impact on worldwide economic activity and on macroeconomic conditions and the end markets of our business. The outbreak and a continued spread of COVID-19 has resulted in a substantial curtailment of business activities worldwide and has caused weakened economic conditions, both in the United States and abroad. Although vaccines are available in various countries where we operate, it is possible the COVID-19 pandemic may continue to have a negative impact on the Company's ongoing operations and the end markets in which it serves. However, the full impact of the COVID-19 pandemic continues to evolve as of the date of this filing, and as such, it is uncertain as to the full magnitude that the pandemic will have on the Company’s financial condition, liquidity, and future results of operations. Management is actively monitoring the impact of the pandemic on its financial condition, liquidity, operations, suppliers, industry, and workforce.

New Financial Accounting Pronou

New Financial Accounting Pronouncements	6 Months Ended
	Jun. 30, 2021
Accounting Changes And Error Corrections [Abstract]
New Financial Accounting Pronouncements	2. New Financial Accounting Pronouncements Accounting Standards adopted in Fiscal 2021 In December 2019, the FASB issued ASU No. 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes” (“ASU 2019-12”), which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. ASU 2019-12 is effective for the Company beginning January 1, 2021 and did not have a material impact on our financial statements. Accounting Standards to be Adopted None.

Accounts Receivable

Accounts Receivable	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Accounts Receivable	3. Accounts Receivable (table only in thousands) June 30, 2021 December 31, 2020 Contract receivables $ 57,560 $ 57,435 Trade receivables 11,100 8,721 Allowance for doubtful accounts (3,010 ) (3,110 ) Total accounts receivable $ 65,650 $ 63,046 Balances billed but not paid by customers under retainage provisions in contracts within the Condensed Consolidated Balance Sheets amounted to approximately $1.9 million and $1.5 million at June 30, 2021 and December 31, 2020, respectively. Retainage receivables on contracts in progress are generally collected within a year after contract completion. Bad debt expense was approximately $0.1 million and $0.4 million for the three-month periods ended June 30, 2021 and 2020, respectively, and $0.1 million and $0.5 million for the six-month periods ended June 30, 2021 and 2020, respectively.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Inventories	4 . Inventories (table only in thousands) June 30, 2021 December 31, 2020 Raw materials $ 13,995 $ 14,262 Work in process 5,595 5,594 Finished goods 528 496 Obsolescence allowance (2,847 ) (3,009 ) Total inventories $ 17,271 $ 17,343 Amounts credited to the allowance for obsolete inventory and charged to cost of sales amounted to $0.1 million and $0.2 million for the three-month periods ended June 30, 2021 and 2020, respectively and $0.2 million and $0.3 million for the six-month periods ended June 30, 2021 and 2020, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	5 . Goodwill and Intangible Assets (table only in thousands) Six months ended June 30, 2021 Year ended December 31, 2020 Goodwill / Tradename Goodwill Tradename Goodwill Tradename Beginning balance $ 161,820 $ 12,937 $ 152,020 $ 14,291 Acquisitions and related adjustments — — 9,107 — Transfers to finite life classification — (3,150 ) — (700 ) Impairment charge — — — (850 ) Foreign currency translation (38 ) (49 ) 693 196 $ 161,782 $ 9,738 $ 161,820 $ 12,937 (table only in thousands) As of June 30, 2021 As of December 31, 2020 Intangible assets – finite life Cost Accum. Amort. Cost Accum. Amort. Technology $ 14,457 $ 13,358 $ 14,457 $ 13,008 Customer lists 73,199 51,476 73,199 48,959 Tradename 9,728 2,232 6,578 1,758 Foreign currency adjustments (2,598 ) (1,649 ) (2,826 ) (1,954 ) $ 94,786 $ 65,417 $ 91,408 $ 61,771 Activity for the six-months ended June 30, 2021 and 2020 is as follows: (table only in thousands) 2021 2020 Intangible assets – finite life, net at beginning of period $ 29,637 $ 31,283 Amortization expense (3,359 ) (3,498 ) Transfers from indefinite life classification 3,150 — Acquisition and related adjustments — 4,840 Foreign currency adjustments (59 ) 11 Intangible assets – finite life, net at end of period $ 29,369 $ 32,636 Amortization expense of finite life intangible assets was $1.7 million and $1.8 million for the three-month periods ended June 30, 2021 and 2020, respectively and $3.4 million and $3.5 million for the six-month periods ended June 30, 2021 and 2020, respectively. Amortization over the next five years for finite life intangibles is expected to be $3.3 million for the remainder of 2021, $5.8 million in 2022, $5.0 million in 2023, $4.3 million in 2024, and $3.2 million in 2025. During the six-month period ended June 30, 2021, the Company reassessed the useful lives of certain tradenames and determined that $3.2 million of their tradenames would have useful lives of 10 years now versus indefinite. The Company completes an annual (or more often if circumstances require) goodwill and indefinite life intangible asset impairment assessment on October 1. As a part of its impairment assessment, the Company first qualitatively assesses whether current events or changes in circumstances lead to a determination that it is more likely than not (defined as a likelihood of more than 50 percent) that the fair value of a reporting unit or indefinite life intangible asset is less than its carrying amount. If there is a qualitative determination that the fair value is more likely than not greater than the carrying value, the Company does not need to quantitatively test for impairment. If this qualitative assessment indicates a more likely than not potential that the asset may be impaired, the estimated fair value is calculated. If the estimated fair value is less than carrying value, an impairment charge is recorded. As of June 30, 2021, w e reviewed our previous forecasts and assumptions based on our current projections, which are subject to various risks and uncertainties, including projected revenue, projected operational profit, terminal growth rates, and the cost of capital. T The Company’s assumptions about future conditions important to its assessment of potential impairment of its goodwill and indefinite life intangible assets, including the impacts of the COVID-19 pandemic, are subject to uncertainty, and the Company will continue to monitor these conditions in future periods as new information becomes available, and will update its analyses accordingly.

Accounts Payable and Accrued Ex

Accounts Payable and Accrued Expenses	6 Months Ended
	Jun. 30, 2021
Payables And Accruals [Abstract]
Accounts Payable and Accrued Expenses	6 . Accounts Payable and Accrued Expenses (table only in thousands) June 30, 2021 December 31, 2020 Trade accounts payable, including amounts due to subcontractors $ 53,551 $ 55,899 Compensation and related benefits 5,610 5,079 Accrued warranty 3,903 4,090 Contract liabilities 4,144 3,974 Short-term lease liability 2,186 2,274 Other 12,544 13,681 Total accounts payable and accrued expenses $ 81,938 $ 84,997

Senior Debt

Senior Debt	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Senior Debt	7 . Senior Debt Debt consisted of the following: (table only in thousands) June 30, 2021 December 31, 2020 Outstanding borrowings under the Credit Facility (defined below). Term loan payable in quarterly principal installments of $0.6 million through June 2021, $0.9 million through June 2023, and $1.3 million thereafter with balance due upon maturity in June 2024 - Term loan $ 45,000 $ 46,250 - Revolving credit loan 23,600 27,700 - Unamortized debt discount (1,130 ) (1,334 ) Total outstanding borrowings under the Credit Facility 67,470 72,616 Less: current portion (3,750 ) (3,125 ) Total debt, less current portion $ 63,720 $ 69,491 Scheduled principal payments under our United States Debt As of June 30, 2021 and December 31, 2020, $11.2 million and $7.6 million of letters of credit were outstanding, respectively. Total unused credit availability under the Company’s senior secured term loan and senior secured revolver loan with sub-facilities for letters of credit, swing-line loans and senior secured multi-currency loans (collectively, the “Credit Facility”) was $45.6 million and $60.8 million at June 30, 2021 and December 31, 2020, respectively. Revolving loans may be borrowed, repaid and reborrowed until June 11, 2024, at which time all outstanding balances of the Credit Facility must be repaid. The weighted average stated interest rate on outstanding borrowings was 2.22% and 2.31% at June 30, 2021 and December 31, 2020, respectively. Under the terms of the Credit Facility, the Company is required to maintain certain financial covenants, including the maintenance of a Consolidated Net Leverage Ratio. Through September 30, 2021, the maximum Consolidated Net Leverage Ratio is 3.50, after which time the Consolidated Net Leverage Ratio will then decrease to 3.25 until the end of the term of the Credit Facility. As of June 30, 2021 and December 31, 2020, the Company was in compliance with all related financial and other restrictive covenants under the Credit Facility. Foreign Debt The Company has a number of bank guarantee facilities and bilateral lines in various countries currently supported by cash, letters of credit or pledged assets and collateral under the Credit Facility. The Credit Facility allows letters of credit and bank guarantee issuances of up to $50.0 million from the bilateral lines secured by pledged assets and collateral under the Credit Facility. As of June 30, 2021, $22.8 million in bank guarantees were outstanding. In addition, a subsidiary of the Company located in the Netherlands has a Euro-denominated bank guarantee agreement secured by local assets under which $3.0 million in bank guarantees were outstanding as of June 30, 2021. As of June 30, 2021, the borrowers of these facilities and agreements were in compliance with all related financial and other restrictive covenants.

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Earnings per Share	8 . Earnings per Share The computational components of basic and diluted earnings per share for the three-month periods ended June 30, are below. 2021 2020 (table only in thousands) Numerator (for basic and diluted earnings per share) Net income attributable to CECO Environmental Corp. $ 293 $ 3,258 Denominator Basic weighted-average shares outstanding 35,492 35,276 Common stock equivalents arising from stock options and restricted stock awards 327 134 Diluted weighted-average shares outstanding 35,819 35,410 The computational components of basic and diluted earnings per share for the six-month periods ended June 30, are below. 2021 2020 (table only in thousands) Numerator (for basic and diluted earnings per share) Net income attributable to CECO Environmental Corp. $ 1,474 $ 6,670 Denominator Basic weighted-average shares outstanding 35,444 35,216 Common stock equivalents arising from stock options and restricted stock awards 353 187 Diluted weighted-average shares outstanding 35,797 35,403 Options and restricted stock units included in the computation of diluted earnings per share are calculated using the treasury stock method. For the three-month periods ended June 30, 2021 and 2020, 1.9 million and 0.6 million, respectively, and during the six-month periods ended June 30, 2021 and 2020, 1.7 million and 0.5 million, respectively, of outstanding options and restricted stock units were excluded from the computation of diluted earnings per share due to their having an anti-dilutive effect. Once a restricted stock unit vests, it is included in the computation of weighted average shares outstanding for purposes of basic and diluted earnings per share.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	9 . Share-Based Compensation The Company accounts for share-based compensation in accordance with Accounting Standards Codification (“ASC”) Topic 718, “Compensation – Stock Compensation,” which requires the Company to recognize compensation expense for share-based awards, measured at the fair value of the awards at the grant date. The Company recognized $0.9 million and $0.2 million of share-based compensation related expense during the three-month periods ended June 30, 2021 and 2020, respectively, and $1.6 million and $0.8 million during the six-month periods ended June 30, 2021 and 2020, respectively. The Company granted approximately 460,000 and 503,000 restricted stock units during the three-month periods ended June 30, 2021 and 2020, respectively, and approximately 460,000 and 503,000 restricted stock units during the six-month periods ended June 30, 2021 and 2020, respectively. The weighted-average fair value of restricted stock units granted was estimated at $8.59 and $5.44 per unit during the six-months ended June 30, 2021 and 2020, respectively. The fair value of 2021 and 2020 time-based restricted stock units was determined by using the value of stock in the open market on the date of grant. The fair value of the 2021 and 2020 performance-based restricted stock units was determined by using the Monte Carlo valuation model. The fair value of the stock-based awards granted is recorded as compensation expense on a straight-line basis over the vesting periods of the awards. There were 2,000 and zero options exercised during the six-months ended June 30, 2021 and 2020, respectively. The Company received approximately $13,000 from a non-employee director exercising options during the six-months ended June 30, 2021. The intrinsic value of options exercised during the six-months ended June 30, 2021 was approximately $3,000.

Pension and Employee Benefit Pl

Pension and Employee Benefit Plans	6 Months Ended
	Jun. 30, 2021
Compensation And Retirement Disclosure [Abstract]
Pension and Employee Benefit Plans	1 0 . Pension and Employee Benefit Plans We sponsor a non-contributory defined benefit pension plan for certain union employees. The plan is funded in accordance with the funding requirements of the Employee Retirement Income Security Act of 1974. We also sponsor a postretirement health care plan for office employees retired before January 1, 1990. The plan allowed retirees who attained the age of 65 to elect the type of coverage desired. We present the components of net periodic benefit cost (gain) within “Other income” on the Condensed Consolidated Statements of Income. Retirement and health care plan expense is based on valuations performed by plan actuaries as of the beginning of each fiscal year. The components of the expense consisted of the following: Three months ended June 30, Six months ended June 30, (table only in thousands) 2021 2020 2021 2020 Pension plan: Interest cost $ 194 $ 258 $ 388 $ 516 Expected return on plan assets (378 ) (350 ) (756 ) (700 ) Amortization of net actuarial loss 103 65 206 130 Net periodic benefit (gain) cost $ (81 ) $ (27 ) $ (162 ) $ (54 ) Health care plan: Interest cost $ 1 $ 1 $ 1 $ 1 Amortization of loss 2 2 4 4 Net periodic benefit cost $ 3 $ 3 $ 5 $ 5 We made contributions to our defined benefit plans of zero and approximately $0.1 million during the six-months ended June 30, 2021 and 2020, respectively. For the remainder of 2021, we do not expect to make any contributions to fund the pension plan or the retiree health care plan. The unfunded liability of the plans of $9.6 million and $9.7 million as of June 30, 2021 and December 31, 2020, respectively, is included in “Other liabilities” on our Condensed Consolidated Balance Sheets.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	1 1 . Income Taxes We file income tax returns in various federal, state and local jurisdictions. Tax years from 2017 forward remain open for examination by Federal authorities. Tax years from 2015 forward remain open for all significant state and foreign authorities. We account for uncertain tax positions pursuant to ASC Topic 740, “Income Taxes.” As of June 30, 2021 and December 31, 2020, the liability for uncertain tax positions totaled approximately $0.2 million and $0.1 million, respectively, which is included in “Other liabilities” on our Condensed Consolidated Balance Sheets. We recognize accrued interest related to uncertain tax positions and penalties, if any, in income tax expense within the Condensed Consolidated Statements of Income. Certain of the Company’s undistributed earnings of our foreign subsidiaries are not permanently reinvested. Since foreign earnings have already been subject to United States income tax in 2017 as a result of the 2017 Tax Cuts and Jobs Act, we intend to repatriate foreign-held cash as needed. We record deferred income tax attributable to foreign withholding taxes that would become payable should we decide to repatriate cash held in our foreign operations. As of June 30, 2021 and December 31, 2020, we have recorded deferred income taxes of approximately $1.2 million and $0.9 million, respectively, on the undistributed earnings of our foreign subsidiaries. Income tax expense was $0.2 million for the second quarter of 2021 and $0.8 million for the first six months of 2021 compared with income tax expense of $0.6 million for the second quarter of 2020 and $1.3 million for the first six months of 2020. The effective income tax rate for the second quarter of 2021 was 34.3% compared with 14.8% for the second quarter of 2020. The effective income tax rate for the first six months of 2021 was 30.9% compared with 16.8% for the first six months of 2020. The effective income tax rate for the three and six months ended June 30, 2021 is higher than the United States federal statutory rate. Our effective tax rate is affected by certain other permanent differences, including state income taxes, non-deductible incentive stock-based compensation, the Global Intangible Low-Taxed Income inclusion and Foreign-Derived Intangible Income deduction, tax credits, and differences in tax rates among the jurisdictions in which we operate.

Financial Instruments

Financial Instruments	6 Months Ended
	Jun. 30, 2021
Investments All Other Investments [Abstract]
Financial Instruments	1 2 . Financial Instruments Our financial instruments consist primarily of investments in cash and cash equivalents, receivables and certain other assets, foreign debt and accounts payable, which approximate fair value at June 30, 2021 and December 31, 2020, due to their short-term nature or variable, market-driven interest rates. The fair value of the debt issued under the Credit Facility was $68.6 million and $74.0 million at June 30, 2021 and December 31, 2020, respectively. At June 30, 2021 and December 31, 2020, the Company had cash and cash equivalents of $32.2 million and $36.0 million, respectively, of which $25.2 million and $28.0 million, respectively, was held outside of the United States, principally in the Netherlands, United Kingdom, China, and Canada.

Commitments and Contingencies -

Commitments and Contingencies - Legal Matters	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies - Legal Matters	1 3 . Commitments and Contingencies – Legal Matters Asbestos cases Our subsidiary, Met-Pro Technologies LLC (“Met-Pro”), beginning in 2002, began to be named in asbestos-related lawsuits filed against a large number of industrial companies including, in particular, those in the pump and fluid handling industries. In management’s opinion, the complaints typically have been vague, general and speculative, alleging that Met-Pro, along with the numerous other defendants, sold unidentified asbestos-containing products and engaged in other related actions which caused injuries (including death) and loss to the plaintiffs. Counsel has advised that more recent cases typically allege more serious claims of mesothelioma. The Company’s insurers have hired attorneys who, together with the Company, are vigorously defending these cases. Many cases have been dismissed after the plaintiff fails to produce evidence of exposure to Met-Pro’s products. In those cases, where evidence has been produced, the Company’s experience has been that the exposure levels are low and the Company’s position has been that its products were not a cause of death, injury or loss. The Company has been dismissed from or settled a large number of these cases. Cumulative settlement payments from 2002 through June 30, 2021 for cases involving asbestos-related claims were $3.5 million, of which, together with all legal fees other than corporate counsel expenses, $3.3 million has been paid by the Company’s insurers. The average cost per settled claim, excluding legal fees, was approximately $34,000. Based upon the most recent information available to the Company regarding such claims, there were a total of 216 cases pending against the Company as of June 30, 2021 (with Illinois, New York, Pennsylvania and West Virginia having the largest number of cases), as compared with 200 cases that were pending as of December 31, 2020. During the six-months ended June 30, 2021, 55 new cases were filed against the Company, and the Company was dismissed from 31 cases and settled eight cases. Most of the pending cases have not advanced beyond the early stages of discovery, although a number of cases are on schedules leading to or scheduled for trial. The Company believes that its insurance coverage is adequate for the cases currently pending against the Company and for the foreseeable future, assuming a continuation of the current volume, nature of cases and settlement amounts. However, the Company has no control over the number and nature of cases that are filed against it, nor as to the financial health of its insurers or their position as to coverage. The Company also presently believes that none of the pending cases will have a material adverse impact upon the Company’s results of operations, liquidity or financial condition. Other The Company is also a party to routine contract and employment-related litigation matters, warranty claims and routine audits of state and local tax returns arising in the ordinary course of its business. The final outcome and impact of open matters, and related claims and investigations that may be brought in the future, are subject to many variables, and cannot be predicted. In accordance with ASC 450, “Contingencies”, and related guidance, we record accruals for estimated losses relating to claims and lawsuits when available information indicates that a loss is probable and the amount of the loss, or range of loss, can be reasonably estimated. The Company expenses legal costs as they are incurred. We are not aware of any pending claims or assessments, other than as described above, which may have a material adverse impact on our liquidity, financial position, results of operations, or cash flows.

Acquisitions and Joint Ventures

Acquisitions and Joint Ventures	6 Months Ended
	Jun. 30, 2021
Business Combinations [Abstract]
Acquisitions and Joint Ventures	14. Acquisitions and Joint Ventures Environmental Integrated Solutions On June 4, 2020, the Company acquired 100% of the equity interests of Environmental Integrated Solutions (“EIS”) for $10.3 million in cash, which was financed through our revolving credit facility. As additional consideration, the former owners are entitled to earn-out payments based upon a multiple of specified financial results through December 31, 2021. Based on projections at the acquisition date, the Company estimated the fair value of the earn-out to be $0.6 million. During 2020, the Company increased the earnout liability to $1.7 million at December 31, 2020 based on the estimated fair value at that date. During 2021, the Company increased the estimated earnout fair value an additional $0.5 million and made earnout payments of $0.8 million related to 2020 performance. The changes in fair value were a result of EIS performing above acquisition operational expectations. As of June 30, 2021 the earnout liability recorded in “Accounts payable and accrued expenses” on the Condensed Consolidated Balance Sheets is $1.4 million. EIS engineers products that clean air through a variety of technologies including volatile organic compounds (“VOC”) abatement, odor control, and other air pollution control solutions, which complements our Industrial Solutions Segment businesses. The following table summarizes the fair values of the assets acquired and liabilities assumed at the date of closing. (table only in thousands) Current assets (including cash of $4,212) $ 6,416 Property and equipment 26 Other assets 44 Goodwill 7,022 Intangible - finite life 4,840 Total assets acquired 18,348 Current liabilities assumed (6,514 ) Deferred income tax liability (920 ) Net assets acquired $ 10,914 Goodwill recognized represents value the Company expects to be created by combining the various operations of the acquired businesses with the Company’s operations, including the expansion into markets within existing business segments, access to new customers and potential cost savings and synergies. Goodwill related to this acquisition is not deductible for tax purposes. The Company acquired customer lists and tradename intangible assets valued at $4.2 million and $0.6 million, respectively. These assets were determined to have useful lives of 10 years. Acquisition and integration expenses on the Condensed Consolidated Statements of Income are related to acquisition activities, which include retention, legal, accounting, banking, and other expenses. For the three and six months ended June 30, 2021, EIS accounted for $5.5 million and $8.1 million in revenue, respectively and $0.7 million and $0.9 million, respectively of net income included in the Company’s results. Mader On July 31, 2020, the Company entered into a joint venture agreement (“JV Agreement”) with Mader Holdings L.P. (“Mader”) in which CECO contributed the net assets of its Effox-Flextor damper business and Mader contributed the net assets of their damper business. Under the terms of the JV Agreement, CECO holds 70% of the equity in the joint venture, and 50% voting interest. We determined CECO was the primary beneficiary of this variable interest entity and therefore the 30% noncontrolling equity interest is in the Consolidated Balance Sheet. The results of the joint venture are included in our Engineered Systems segment. The fair value of Mader’s net assets contributed was $1.0 million. As of June 30, 2021 there were $6.6 million in current assets, $8.8 million in long-lived assets, and $6.8 million in total liabilities related to the Effox-Mader joint venture included in our Condensed Consolidated Balance Sheets. For the three and six months ended June 30, 2021 Mader accounted for $4.7 million and $9.6 million in revenue, respectively, and $0.6 million and $1.2 million of net income, respectively, included in the Company’s results. The following table summarizes the fair values of the assets acquired and liabilities assumed at the JV agreement date. (table only in thousands) Current assets (including cash of $229) $ 2,040 Property and equipment 103 Goodwill 2,085 Deferred income tax asset 287 Total assets acquired 4,515 Current liabilities assumed (515 ) Other liabilities (500 ) Long term debt (2,508 ) Net assets acquired $ 992 Goodwill recognized represents value the Company expects to be created by combining the various operations of the joint venture with the Company’s operations, including the expansion into markets within existing business segments, access to new customers and potential cost savings and synergies. Goodwill related to this joint venture is not deductible for tax purposes. The fair values of the assets acquired and liabilities assumed related to the above acquisition and joint venture were finalized during the quarter ended June 30, 2021. The following unaudited pro forma financial information represents the Company’s results of operations as if the EIS acquisition and the joint venture with Mader had occurred on January 1, 2020: Three months ended June 30, Six months ended June 30, (table in thousands, except per share data) 2021 2020 2021 2020 Net sales $ 78,680 $ 79,809 $ 150,572 $ 168,608 Net income attributable to CECO Environmental Corp. 293 3,834 1,474 8,198 Earnings per share: Basic $ 0.01 $ 0.11 $ 0.04 $ 0.23 Diluted $ 0.01 $ 0.11 $ 0.04 $ 0.23 The pro forma results have been prepared for informational purposes only and include adjustments to amortize acquired intangible assets with finite life, reflect additional interest expense on debt used to fund the acquisition, and to record the income tax consequences of the pro forma adjustments. These pro forma results do not purport to be indicative of the results of operations that would have occurred had the purchase been made as of the beginning of the periods presented or of the results of operations that may occur in the future.

Business Segment Information

Business Segment Information	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Business Segment Information	1 5 . Business Segment Information The Company’s operations are organized and reviewed by management along with its solutions or end markets that the segment serves and presented in two reportable segments. During the first quarter of 2021, management determined that a realignment of the Company’s segments was necessary to better reflect the solutions we provide, and the end markets we serve. As a result of this realignment, we combined the operating results of the prior Industrial Solutions segment and Fluid Handling Solutions segment into a single reportable segment named the Industrial Process Solutions segment . In addition, the Energy Solutions segment was renamed the Engineered Systems segment. The results of the segments are reviewed through the “Income from operations” line on the Condensed Consolidated Statements of Income. The Company’s reportable segments are organized as groups of similar products and services, as described as follows: Engineered Systems segment: Our Engineered Systems segment, formerly known as the Energy Solutions segment, serves the power generation, refinery, water/waste water, and midstream oil & gas markets. We are a key part of helping meet the global demand for environmental and equipment protection through our highly engineered emissions management, product recovery, thermal acoustics, and water & gas separation solutions . Industrial Process Solutions segment: Our Industrial Process Solutions segment is the combination of the segments formerly known as our Industrial Solutions segment and our Fluid Handling Solutions segment, which serves the broad industrial air pollution control, beverage can, fluid handling, electric vehicle production, food and beverage, semi-conductor, process filtration, pharmaceutical, petrochemical, wastewater treatment, wood manufacturing, desalination, and aquaculture markets. We protect the air we collectively breathe, maintain clean and safe operations for employees, lower energy consumption , minimize waste for customers, and ensure they meet regulatory compliance standards for toxic emissions, fumes, volatile organic compounds and odors . The financial segment information is presented in the following tables: Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Net sales (less intra-, inter-segment sales) Engineered Systems segment $ 43,360 $ 49,074 $ 85,417 $ 99,720 Industrial Process Solutions segment 35,320 26,096 65,155 55,936 Net sales $ 78,680 $ 75,170 $ 150,572 $ 155,656 Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Income from operations Engineered Systems segment $ 5,634 $ 8,646 $ 11,804 $ 17,203 Industrial Process Solutions segment 4,441 1,836 8,263 4,932 Corporate and Other (1) (7,930 ) (6,087 ) (14,868 ) (13,502 ) Income from operations $ 2,145 $ 4,395 $ 5,199 $ 8,633 (1) Includes corporate compensation, professional services, information technology, and other general and administrative corporate expenses. Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Property and equipment additions Engineered Systems segment $ 55 $ 101 $ 64 $ 298 Industrial Process Solutions segment 172 190 362 769 Corporate and Other 278 725 571 925 Property and equipment additions $ 505 $ 1,016 $ 997 $ 1,992 Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Depreciation and amortization Engineered Systems segment $ 1,070 $ 1,224 $ 2,137 $ 2,445 Industrial Process Solutions segment 1,073 983 2,141 1,911 Corporate and Other 328 245 628 292 Depreciation and amortization $ 2,471 $ 2,452 $ 4,906 $ 4,648 (dollars in thousands) June 30, 2021 December 31, 2020 Identifiable assets Engineered Systems segment $ 262,663 $ 270,573 Industrial Process Solutions segment 136,917 135,204 Corporate and Other (2) 11,122 13,537 Identifiable assets $ 410,702 $ 419,314 (2) Corporate and Other assets consist primarily of cash and income tax related assets. (dollars in thousands) June 30, 2021 December 31, 2020 Goodwill Engineered Systems segment $ 99,747 $ 99,785 Industrial Process Solutions segment 62,035 62,035 Goodwill $ 161,782 $ 161,820 Intra-segment and Inter-segment Revenues The Company has multiple divisions that sell to each other within segments (intra-segment sales) and between segments (inter-segment sales) as indicated in the following tables: Three months ended June 30, 2021 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 47,069 $ (3,513 ) $ (196 ) $ — $ 43,360 Industrial Process Solutions segment 41,245 (5,281 ) — (644 ) 35,320 Net sales $ 88,314 $ (8,794 ) $ (196 ) $ (644 ) $ 78,680 Three months ended June 30, 2020 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 52,369 $ (2,984 ) $ (311 ) $ — $ 49,074 Industrial Process Solutions segment 30,438 (3,935 ) — (407 ) 26,096 Net sales $ 82,807 $ (6,919 ) $ (311 ) $ (407 ) $ 75,170 Six months ended June 30, 2021 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 91,545 $ (5,887 ) $ (241 ) $ — $ 85,417 Industrial Process Solutions segment 74,178 (8,055 ) — (968 ) 65,155 Net sales $ 165,723 $ (13,942 ) $ (241 ) $ (968 ) $ 150,572 Six months ended June 30, 2020 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 107,978 $ (7,790 ) $ (468 ) $ — $ 99,720 Industrial Process Solutions segment 64,328 (7,601 ) — (791 ) 55,936 Net sales $ 172,306 $ (15,391 ) $ (468 ) $ (791 ) $ 155,656

New Financial Accounting Pron_2

New Financial Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Changes And Error Corrections [Abstract]
Accounting Standards Adopted in Fiscal 2021	Accounting Standards adopted in Fiscal 2021 In December 2019, the FASB issued ASU No. 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes” (“ASU 2019-12”), which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. ASU 2019-12 is effective for the Company beginning January 1, 2021 and did not have a material impact on our financial statements.
Accounting Standards Yet to be Adopted	Accounting Standards to be Adopted None.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Summary of Accounts Receivable	(table only in thousands) June 30, 2021 December 31, 2020 Contract receivables $ 57,560 $ 57,435 Trade receivables 11,100 8,721 Allowance for doubtful accounts (3,010 ) (3,110 ) Total accounts receivable $ 65,650 $ 63,046

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Summary of Inventories	(table only in thousands) June 30, 2021 December 31, 2020 Raw materials $ 13,995 $ 14,262 Work in process 5,595 5,594 Finished goods 528 496 Obsolescence allowance (2,847 ) (3,009 ) Total inventories $ 17,271 $ 17,343

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill / Tradename	(table only in thousands) Six months ended June 30, 2021 Year ended December 31, 2020 Goodwill / Tradename Goodwill Tradename Goodwill Tradename Beginning balance $ 161,820 $ 12,937 $ 152,020 $ 14,291 Acquisitions and related adjustments — — 9,107 — Transfers to finite life classification — (3,150 ) — (700 ) Impairment charge — — — (850 ) Foreign currency translation (38 ) (49 ) 693 196 $ 161,782 $ 9,738 $ 161,820 $ 12,937
Intangible Assets - Finite Life	(table only in thousands) As of June 30, 2021 As of December 31, 2020 Intangible assets – finite life Cost Accum. Amort. Cost Accum. Amort. Technology $ 14,457 $ 13,358 $ 14,457 $ 13,008 Customer lists 73,199 51,476 73,199 48,959 Tradename 9,728 2,232 6,578 1,758 Foreign currency adjustments (2,598 ) (1,649 ) (2,826 ) (1,954 ) $ 94,786 $ 65,417 $ 91,408 $ 61,771
Summary of Finite Lived Intangible Assets Activities	Activity for the six-months ended June 30, 2021 and 2020 is as follows: (table only in thousands) 2021 2020 Intangible assets – finite life, net at beginning of period $ 29,637 $ 31,283 Amortization expense (3,359 ) (3,498 ) Transfers from indefinite life classification 3,150 — Acquisition and related adjustments — 4,840 Foreign currency adjustments (59 ) 11 Intangible assets – finite life, net at end of period $ 29,369 $ 32,636

Accounts Payable and Accrued _2

Accounts Payable and Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2021
Payables And Accruals [Abstract]
Summary of Accounts Payable and Accrued Expenses	(table only in thousands) June 30, 2021 December 31, 2020 Trade accounts payable, including amounts due to subcontractors $ 53,551 $ 55,899 Compensation and related benefits 5,610 5,079 Accrued warranty 3,903 4,090 Contract liabilities 4,144 3,974 Short-term lease liability 2,186 2,274 Other 12,544 13,681 Total accounts payable and accrued expenses $ 81,938 $ 84,997

Senior Debt (Tables)

Senior Debt (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Summary of Debt	Debt consisted of the following: (table only in thousands) June 30, 2021 December 31, 2020 Outstanding borrowings under the Credit Facility (defined below). Term loan payable in quarterly principal installments of $0.6 million through June 2021, $0.9 million through June 2023, and $1.3 million thereafter with balance due upon maturity in June 2024 - Term loan $ 45,000 $ 46,250 - Revolving credit loan 23,600 27,700 - Unamortized debt discount (1,130 ) (1,334 ) Total outstanding borrowings under the Credit Facility 67,470 72,616 Less: current portion (3,750 ) (3,125 ) Total debt, less current portion $ 63,720 $ 69,491

Earnings and Dividends per Shar

Earnings and Dividends per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Number of Shares Outstanding for Calculation of Earnings Per Share	The computational components of basic and diluted earnings per share for the three-month periods ended June 30, are below. 2021 2020 (table only in thousands) Numerator (for basic and diluted earnings per share) Net income attributable to CECO Environmental Corp. $ 293 $ 3,258 Denominator Basic weighted-average shares outstanding 35,492 35,276 Common stock equivalents arising from stock options and restricted stock awards 327 134 Diluted weighted-average shares outstanding 35,819 35,410 The computational components of basic and diluted earnings per share for the six-month periods ended June 30, are below. 2021 2020 (table only in thousands) Numerator (for basic and diluted earnings per share) Net income attributable to CECO Environmental Corp. $ 1,474 $ 6,670 Denominator Basic weighted-average shares outstanding 35,444 35,216 Common stock equivalents arising from stock options and restricted stock awards 353 187 Diluted weighted-average shares outstanding 35,797 35,403

Pension and Employee Benefit _2

Pension and Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2021
Compensation And Retirement Disclosure [Abstract]
Components of Pension and Employee Benefit Expenses	The components of the expense consisted of the following: Three months ended June 30, Six months ended June 30, (table only in thousands) 2021 2020 2021 2020 Pension plan: Interest cost $ 194 $ 258 $ 388 $ 516 Expected return on plan assets (378 ) (350 ) (756 ) (700 ) Amortization of net actuarial loss 103 65 206 130 Net periodic benefit (gain) cost $ (81 ) $ (27 ) $ (162 ) $ (54 ) Health care plan: Interest cost $ 1 $ 1 $ 1 $ 1 Amortization of loss 2 2 4 4 Net periodic benefit cost $ 3 $ 3 $ 5 $ 5

Acquisitions and Joint Ventur_2

Acquisitions and Joint Ventures (Tables)	6 Months Ended
	Jun. 30, 2021
Schedule of Unaudited Pro Forma Financial Information	The following unaudited pro forma financial information represents the Company’s results of operations as if the EIS acquisition and the joint venture with Mader had occurred on January 1, 2020: Three months ended June 30, Six months ended June 30, (table in thousands, except per share data) 2021 2020 2021 2020 Net sales $ 78,680 $ 79,809 $ 150,572 $ 168,608 Net income attributable to CECO Environmental Corp. 293 3,834 1,474 8,198 Earnings per share: Basic $ 0.01 $ 0.11 $ 0.04 $ 0.23 Diluted $ 0.01 $ 0.11 $ 0.04 $ 0.23
Environmental Integrated Solutions [Member]
Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the fair values of the assets acquired and liabilities assumed at the date of closing. (table only in thousands) Current assets (including cash of $4,212) $ 6,416 Property and equipment 26 Other assets 44 Goodwill 7,022 Intangible - finite life 4,840 Total assets acquired 18,348 Current liabilities assumed (6,514 ) Deferred income tax liability (920 ) Net assets acquired $ 10,914
Mader Holdings L.P. | Joint Venture Agreement
Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the fair values of the assets acquired and liabilities assumed at the JV agreement date. (table only in thousands) Current assets (including cash of $229) $ 2,040 Property and equipment 103 Goodwill 2,085 Deferred income tax asset 287 Total assets acquired 4,515 Current liabilities assumed (515 ) Other liabilities (500 ) Long term debt (2,508 ) Net assets acquired $ 992

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Net Sales and Income from Operation by Business Segment	The financial segment information is presented in the following tables: Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Net sales (less intra-, inter-segment sales) Engineered Systems segment $ 43,360 $ 49,074 $ 85,417 $ 99,720 Industrial Process Solutions segment 35,320 26,096 65,155 55,936 Net sales $ 78,680 $ 75,170 $ 150,572 $ 155,656 Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Income from operations Engineered Systems segment $ 5,634 $ 8,646 $ 11,804 $ 17,203 Industrial Process Solutions segment 4,441 1,836 8,263 4,932 Corporate and Other (1) (7,930 ) (6,087 ) (14,868 ) (13,502 ) Income from operations $ 2,145 $ 4,395 $ 5,199 $ 8,633 (1) Includes corporate compensation, professional services, information technology, and other general and administrative corporate expenses.
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets	Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Property and equipment additions Engineered Systems segment $ 55 $ 101 $ 64 $ 298 Industrial Process Solutions segment 172 190 362 769 Corporate and Other 278 725 571 925 Property and equipment additions $ 505 $ 1,016 $ 997 $ 1,992 Three months ended June 30, Six months ended June 30, (dollars in thousands) 2021 2020 2021 2020 Depreciation and amortization Engineered Systems segment $ 1,070 $ 1,224 $ 2,137 $ 2,445 Industrial Process Solutions segment 1,073 983 2,141 1,911 Corporate and Other 328 245 628 292 Depreciation and amortization $ 2,471 $ 2,452 $ 4,906 $ 4,648 (dollars in thousands) June 30, 2021 December 31, 2020 Identifiable assets Engineered Systems segment $ 262,663 $ 270,573 Industrial Process Solutions segment 136,917 135,204 Corporate and Other (2) 11,122 13,537 Identifiable assets $ 410,702 $ 419,314 (2) Corporate and Other assets consist primarily of cash and income tax related assets.
Goodwill	(dollars in thousands) June 30, 2021 December 31, 2020 Goodwill Engineered Systems segment $ 99,747 $ 99,785 Industrial Process Solutions segment 62,035 62,035 Goodwill $ 161,782 $ 161,820
Intra-Segment and Inter-Segment Revenues	The Company has multiple divisions that sell to each other within segments (intra-segment sales) and between segments (inter-segment sales) as indicated in the following tables: Three months ended June 30, 2021 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 47,069 $ (3,513 ) $ (196 ) $ — $ 43,360 Industrial Process Solutions segment 41,245 (5,281 ) — (644 ) 35,320 Net sales $ 88,314 $ (8,794 ) $ (196 ) $ (644 ) $ 78,680 Three months ended June 30, 2020 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 52,369 $ (2,984 ) $ (311 ) $ — $ 49,074 Industrial Process Solutions segment 30,438 (3,935 ) — (407 ) 26,096 Net sales $ 82,807 $ (6,919 ) $ (311 ) $ (407 ) $ 75,170 Six months ended June 30, 2021 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 91,545 $ (5,887 ) $ (241 ) $ — $ 85,417 Industrial Process Solutions segment 74,178 (8,055 ) — (968 ) 65,155 Net sales $ 165,723 $ (13,942 ) $ (241 ) $ (968 ) $ 150,572 Six months ended June 30, 2020 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Industrial Process Solutions Engineered Systems Net Outside Customers Net sales Engineered Systems segment $ 107,978 $ (7,790 ) $ (468 ) $ — $ 99,720 Industrial Process Solutions segment 64,328 (7,601 ) — (791 ) 55,936 Net sales $ 172,306 $ (15,391 ) $ (468 ) $ (791 ) $ 155,656

Accounts Receivable - Summary o

Accounts Receivable - Summary of Accounts Receivable (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract receivables	$ 57,560	$ 57,435
Allowance for doubtful accounts	(3,010)	(3,110)
Total accounts receivable	65,650	63,046
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables	$ 11,100	$ 8,721

Accounts Receivable - Additiona

Accounts Receivable - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Receivables [Abstract]
Amount billed but not received under retainage provisions in contracts	$ 1,900		$ 1,900		$ 1,500
Retainage receivables on contracts period				1 year
Bad debt expense	$ 100	$ 400	$ 110	$ 457

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Inventory Net [Abstract]
Raw materials	$ 13,995	$ 14,262
Work in process	5,595	5,594
Finished goods	528	496
Obsolescence allowance	(2,847)	(3,009)
Total inventories	$ 17,271	$ 17,343

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Inventory Disclosure [Abstract]
Amounts credited to the allowance for obsolete inventory	$ 0.1	$ 0.2	$ 0.2	$ 0.3

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Goodwill / Tradename (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, beginning balance	$ 161,820	$ 152,020
Goodwill, acquisitions and related adjustments		9,107
Goodwill, foreign currency translation	(38)	693
Goodwill, ending balance	161,782	161,820
Tradename, beginning balance	12,937	14,291
Tradename, transfers to finite life classification	(3,150)	(700)
Tradename, Impairment charge		(850)
Tradename, foreign currency translation	(49)	196
Tradename, ending balance	$ 9,738	$ 12,937

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Intangible Assets - Finite Life (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Cost	$ 94,786	$ 91,408
Accumulated Amortization	65,417	61,771
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	14,457	14,457
Accumulated Amortization	13,358	13,008
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	73,199	73,199
Accumulated Amortization	51,476	48,959
Tradename [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	9,728	6,578
Accumulated Amortization	2,232	1,758
Foreign Currency Adjustments [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	(2,598)	(2,826)
Accumulated Amortization	$ (1,649)	$ (1,954)

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Finite Lived Intangible Assets Amortization Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible assets – finite life, net at beginning of period			$ 29,637	$ 31,283
Amortization expense	$ (1,700)	$ (1,800)	(3,359)	(3,498)
Transfers from indefinite life classification			3,150
Acquisition and related adjustments				4,840
Foreign currency adjustments			(59)	11
Intangible assets – finite life, net at end of period	$ 29,369	$ 32,636	$ 29,369	$ 32,636

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule Of Goodwill And Other Intangible Assets [Line Items]
Amortization expense of finite life intangible assets	$ 1,700	$ 1,800	$ 3,359	$ 3,498
Amortization expense of finite life intangibles for 2021	3,300		3,300
Amortization expense of finite life intangibles for 2022	5,800		5,800
Amortization expense of finite life intangibles for 2023	5,000		5,000
Amortization expense of finite life intangibles for 2024	4,300		4,300
Amortization expense of finite life intangibles for 2025	3,200		3,200
Certain Tradenames [Member]
Schedule Of Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangible asset, fair value	$ 3,200		$ 3,200
Intangible assets, Useful Life			10 years

Accounts Payable and Accrued _3

Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Trade accounts payable, including amounts due to subcontractors	$ 53,551	$ 55,899
Compensation and related benefits	5,610	5,079
Accrued warranty	3,903	4,090
Contract liabilities	4,144	3,974
Short-term lease liability	2,186	2,274
Other	12,544	13,681
Total accounts payable and accrued expenses	$ 81,938	$ 84,997

Senior Debt - Summary of Debt (

Senior Debt - Summary of Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total outstanding borrowings under the Credit Facility	$ 67,470	$ 72,616
Less: current portion	(3,750)	(3,125)
Debt, less current portion	63,720	69,491
Term Loan [Member]
Debt Instrument [Line Items]
Total outstanding borrowings under the Credit Facility	45,000	46,250
Revolving Credit Loan [Member]
Debt Instrument [Line Items]
Revolving Credit Loan	23,600	27,700
Term Debt [Member]
Debt Instrument [Line Items]
Unamortized debt discount	$ (1,130)	$ (1,334)

Senior Debt - Summary of Debt_2

Senior Debt - Summary of Debt (Parenthetical) (Detail) - Term Loan [Member] $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)
Debt Instrument [Line Items]
Frequency of periodic payment	quarterly
Term loans, year of maturity	Jun. 30, 2024
Debt Instrument, Redemption, Through June 2021 [Member]
Debt Instrument [Line Items]
Outstanding borrowings, quarterly principal installments payable amount	$ 0.6
Debt Instrument, Redemption, Through June 2023 [Member]
Debt Instrument [Line Items]
Outstanding borrowings, quarterly principal installments payable amount	0.9
Debt Instrument, Redemption, Thereafter [Member]
Debt Instrument [Line Items]
Outstanding borrowings, quarterly principal installments payable amount	$ 1.3

Senior Debt - Additional Inform

Senior Debt - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Line Of Credit Facility [Line Items]
Credit facility principal payments 2021		$ 1.9
Credit facility principal payments 2022		3.7
Credit facility principal payments 2023		4.4
Credit facility principal payments 2024		$ 58.6
Weighted average interest rate on outstanding borrowings		2.22%	2.31%
Maximum consolidated leverage ratio	3.50%
Scenario Forecast [Member]
Line Of Credit Facility [Line Items]
Maximum consolidated leverage ratio	3.25%
Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Unused credit availability under credit facility		$ 45.6	$ 60.8
Letters of Credit [Member]
Line Of Credit Facility [Line Items]
Aggregate principal amount outstanding under the credit facilities		11.2	$ 7.6
Bank Guarantees [Member]
Line Of Credit Facility [Line Items]
Bank guarantee issuance under bilateral lines and collateral		50
Bank guarantee agreement outstanding amount		22.8
Netherlands Facility [Member] | Euro-Denominated Bank Guarantee [Member]
Line Of Credit Facility [Line Items]
Bank guarantee agreement outstanding amount		$ 3

Earnings per Share - Number of

Earnings per Share - Number of Shares Outstanding for Calculation of Earnings Per Share (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income attributable to CECO Environmental Corp.	$ 293	$ 3,258	$ 1,474	$ 6,670
Denominator
Basic weighted-average shares outstanding	35,491,725	35,275,729	35,444,477	35,215,553
Common stock equivalents arising from stock options and restricted stock awards	327,000	134,000	353,000	187,000
Diluted weighted-average shares outstanding	35,819,269	35,410,182	35,797,001	35,402,524

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings And Dividends Per Share [Abstract]
Anti-dilutive options and restricted stock units outstanding	1.9	0.6	1.7	0.5

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized share-based compensation awards	$ 900	$ 200	$ 1,600	$ 800
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			2,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value				$ 3,000
Non-Employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash received from employee stock option exercised				$ 13,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted	460,000	503,000	460,000	503,000
Weighted-average fair value of restricted stock unit granted			$ 8.59	$ 5.44

Pension and Employee Benefit _3

Pension and Employee Benefit Plans - Components of Pension and Employee Benefit Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 194	$ 258	$ 388	$ 516
Expected return on plan assets	(378)	(350)	(756)	(700)
Amortization of net actuarial loss	103	65	206	130
Net periodic benefit (gain) cost	(81)	(27)	(162)	(54)
Health Care Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	1	1	1	1
Amortization of loss	2	2	4	4
Net periodic benefit (gain) cost	$ 3	$ 3	$ 5	$ 5

Pension and Employee Benefit _4

Pension and Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Defined benefit plan contributions	$ 0	$ 0.1
Unfunded liability plans	$ 9.6		$ 9.7

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Income Taxes [Line Items]
Liability for uncertain tax positions	$ 200		$ 200		$ 100
Income tax expense	$ 199	$ 564	$ 750	$ 1,343
Effective income tax rate	34.30%	14.80%	30.90%	16.80%
Foreign Subsidiaries [Member]
Income Taxes [Line Items]
Deferred income taxes on undistributed earnings			$ 1,200		$ 900
Federal Authorities [Member]
Income Taxes [Line Items]
Open tax years			2017
State and Foreign Authorities [Member]
Income Taxes [Line Items]
Open tax years			2015

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Fair Value Of Financial Instruments [Line Items]
Cash and cash equivalents	$ 32,229	$ 35,992
Cash held outside United States, principally in Netherlands, United Kingdom, China, and Canada	25,200	28,000
Credit Facility [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of debt issued	$ 68,600	$ 74,000

Commitments and Contingencies_2

Commitments and Contingencies - Legal Matters - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021USD ($)Case	Dec. 31, 2020Case
Commitments And Contingencies Disclosure [Abstract]
Cumulative settlement payments for cases involving asbestos-related claims | $	$ 3,500,000
Cumulative settlement payments made for cases involving asbestos-related claims with all legal fees other than corporate counsel expenses | $	3,300,000
Average cost per settled claim excluding legal fees | $	$ 34,000
Number of claims pending	216	200
Number of new cases filed	55
Number of cases dismissed	31
Number of cases settled	8
Assessment regarding Loss contingency impact Description	We are not aware of any pending claims or assessments, other than as described above, which may have a material adverse impact on our liquidity, financial position, results of operations, or cash flows.

Acquisitions and Joint Ventur_3

Acquisitions and Joint Ventures - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 04, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Jul. 31, 2020
Business Acquisition Contingent Consideration [Line Items]
Acquisition of equity	100.00%
Contingent consideration	$ 10,300
Fair value	$ 600
Increase in estimated fair value of earnout				$ 500		$ 1,700
Earnout Payments					$ 800
Earn Out Liability		$ 1,400		1,400
EIS revenue		5,500		8,100
Net revenue		700		900
Assets Current		180,225		180,225		183,485
Liabilities		203,869		203,869		$ 215,703
Pre tax loss		581	$ 3,822	2,430	$ 8,013
Joint Venture Agreement | Mader Holdings L.P.
Business Acquisition Contingent Consideration [Line Items]
Percentage of equity hold in joint venture							70.00%
Voting interest in joint venture							50.00%
Non controlling equity interest							30.00%
Net assets acquired							$ 1,000
Assets Current		6,600		6,600
Noncurrent Assets		8,800		8,800
Liabilities		6,800		6,800
Revenues		4,700		9,600
Pre tax loss		600		1,200
Customer Lists [Member]
Business Acquisition Contingent Consideration [Line Items]
Acquired intangible assets		4,200		4,200
Tradename [Member]
Business Acquisition Contingent Consideration [Line Items]
Acquired intangible assets		$ 600		$ 600
Customer Lists and Tradename [Member]
Business Acquisition Contingent Consideration [Line Items]
Intangible assets, Useful Life				10 years

Acquisitions and Joint Ventur_4

Acquisitions and Joint Ventures - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jul. 31, 2020	Jun. 04, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill	$ 161,782	$ 161,820			$ 152,020
Mader Holdings L.P. | Joint Venture Agreement
Business Acquisition [Line Items]
Current assets			$ 2,040
Property and equipment			103
Goodwill			2,085
Total assets acquired			4,515
Current liabilities assumed			(515)
Net assets acquired			1,000
Deferred income tax asset			287
Total assets acquired			4,515
Other liabilities			(500)
Long term debt			(2,508)
Net assets acquired			$ 992
Environmental Integrated Solutions [Member]
Business Acquisition [Line Items]
Current assets				$ 6,416
Property and equipment				26
Other assets				44
Goodwill				7,022
Intangible - finite life				4,840
Total assets acquired				18,348
Current liabilities assumed				(6,514)
Deferred income tax liability				(920)
Net assets acquired				10,914
Total assets acquired				$ 18,348

Acquisitions and Joint Ventur_5

Acquisitions and Joint Ventures - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) - USD ($) $ in Thousands	Jul. 31, 2020	Jun. 04, 2020
Mader Holdings L.P. | Joint Venture Agreement
Business Acquisition [Line Items]
Cash, Current assets	$ 229
Environmental Integrated Solutions [Member]
Business Acquisition [Line Items]
Cash, Current assets		$ 4,212

Acquisitions and Joint Ventur_6

Acquisitions and Joint Ventures - Schedule of Unaudited Pro Forma Financial Information (Details) - Environmental Integrated Solutions [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Business Acquisition [Line Items]
Net sales	$ 78,680	$ 79,809	$ 150,572	$ 168,608
Net income attributable to CECO Environmental Corp.	$ 293	$ 3,834	$ 1,474	$ 8,198
Earnings per share:
Basic	$ 0.01	$ 0.11	$ 0.04	$ 0.23
Diluted	$ 0.01	$ 0.11	$ 0.04	$ 0.23

Business Segment Information -

Business Segment Information - Net Sales and Income from Operation by Business Segment (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Net sales		$ 78,680	$ 75,170	$ 150,572	$ 155,656
Income from operations		2,145	4,395	5,199	8,633
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income from operations	[1]	(7,930)	(6,087)	(14,868)	(13,502)
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales		43,360	49,074	85,417	99,720
Income from operations		5,634	8,646	11,804	17,203
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales		35,320	26,096	65,155	55,936
Income from operations		$ 4,441	$ 1,836	$ 8,263	$ 4,932
[1]	Includes corporate compensation, professional services, information technology, and other general and administrative corporate expenses

Business Segment Information _2

Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Property and equipment additions		$ 505	$ 1,016	$ 997	$ 1,992
Depreciation and amortization		2,471	2,452	4,906	4,648
Identifiable assets		410,702		410,702		$ 419,314
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		55	101	64	298
Depreciation and amortization		1,070	1,224	2,137	2,445
Identifiable assets		262,663		262,663		270,573
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		172	190	362	769
Depreciation and amortization		1,073	983	2,141	1,911
Identifiable assets		136,917		136,917		135,204
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Property and equipment additions		278	725	571	925
Depreciation and amortization		328	$ 245	628	$ 292
Identifiable assets	[1]	$ 11,122		$ 11,122		$ 13,537
[1]	Corporate and Other assets consist primarily of cash and income tax related assets.

Business Segment Information _3

Business Segment Information - Goodwill (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Goodwill	$ 161,782	$ 161,820	$ 152,020
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	99,747	99,785
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 62,035	$ 62,035

Business Segment Information _4

Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 78,680	$ 75,170	$ 150,572	$ 155,656
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	43,360	49,074	85,417	99,720
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	35,320	26,096	65,155	55,936
Intra - Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(8,794)	(6,919)	(13,942)	(15,391)
Intra - Segment Sales [Member] | Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(3,513)	(2,984)	(5,887)	(7,790)
Intra - Segment Sales [Member] | Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(5,281)	(3,935)	(8,055)	(7,601)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	88,314	82,807	165,723	172,306
Operating Segments [Member] | Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Net sales	47,069	52,369	91,545	107,978
Operating Segments [Member] | Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Net sales	41,245	30,438	74,178	64,328
Inter-segment Elimination [Member] | Industrial Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(196)	(311)	(241)	(468)
Inter-segment Elimination [Member] | Energy Inter Segment Sales
Segment Reporting Information [Line Items]
Net sales	(644)	(407)	(968)	(791)
Inter-segment Elimination [Member] | Engineered Systems Segment [Member] | Industrial Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(196)	(311)	(241)	(468)
Inter-segment Elimination [Member] | Industrial Process Solutions Segment [Member] | Energy Inter Segment Sales
Segment Reporting Information [Line Items]
Net sales	$ (644)	$ (407)	$ (968)	$ (791)