CECO Environmental (CECO) 10-Q 8 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 02, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	CECE
Entity Registrant Name	CECO ENVIRONMENTAL CORP
Entity Central Index Key	3,197
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		34,707,649

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 24,567	$ 45,824
Restricted cash	873	1,498
Accounts receivable, net	70,504	83,062
Costs and estimated earnings in excess of billings on uncompleted contracts	39,964	38,123
Inventories, net	21,750	21,487
Prepaid expenses and other current assets	12,984	13,560
Prepaid income taxes	1,300	1,590
Assets held for sale	8,001	7,834
Total current assets	179,943	212,978
Property, plant and equipment, net	24,667	27,270
Goodwill	171,239	170,153
Intangible assets-finite life, net	52,749	60,728
Intangible assets-indefinite life	22,381	22,042
Deferred charges and other assets	4,564	5,463
Total assets	455,543	498,634
Current liabilities:
Current portion of debt	9,645	8,827
Accounts payable and accrued expenses	77,655	95,610
Billings in excess of costs and estimated earnings on uncompleted contracts	21,038	35,085
Note payable	5,300	5,300
Income taxes payable	924	1,536
Total current liabilities	114,562	146,358
Other liabilities	23,873	34,864
Debt, less current portion	107,287	114,366
Deferred income tax liability, net	12,754	12,964
Total liabilities	258,476	308,552
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, 34,699,316 and 34,300,209 shares issued at September 30, 2017 and December 31, 2016, respectively	347	343
Capital in excess of par value	247,601	244,878
Accumulated loss	(41,079)	(41,741)
Accumulated other comprehensive loss	(9,446)	(13,042)
Stockholders' equity before treasury stock	197,423	190,438
Less treasury stock, at cost, 137,920 shares at September 30, 2017 and December 31, 2016	(356)	(356)
Total shareholders’ equity	197,067	190,082
Total liabilities and shareholders' equity	$ 455,543	$ 498,634

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
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	34,699,316	34,300,209
Treasury stock, shares	137,920	137,920

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Net sales	$ 84,987	$ 101,596	$ 271,508	$ 317,029
Cost of sales	57,854	67,920	183,960	217,837
Gross profit	27,133	33,676	87,548	99,192
Selling and administrative expenses	21,958	19,549	66,690	60,625
Acquisition and integration expenses		163		524
Amortization and earn-out (income) expenses, net	(455)	3,465	4,623	13,176
Income from operations	5,630	10,499	16,235	24,867
Other (expense) income, net	(110)	14	141	395
Interest expense	(1,595)	(1,913)	(4,951)	(5,995)
Income before income taxes	3,925	8,600	11,425	19,267
Income tax expense	889	2,774	2,865	6,349
Net income	3,036	5,826	8,560	12,918
Net income (loss) attributable to noncontrolling interest		22		(36)
Net income attributable to CECO Environmental Corp.	$ 3,036	$ 5,804	$ 8,560	$ 12,954
Earnings per share:
Basic	$ 0.09	$ 0.17	$ 0.25	$ 0.38
Diluted	$ 0.09	$ 0.17	$ 0.25	$ 0.38
Weighted average number of common shares outstanding:
Basic	34,518,622	33,983,708	34,403,720	33,952,768
Diluted	34,621,883	34,354,687	34,665,053	34,211,067

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 3,036	$ 5,826	$ 8,560	$ 12,918
Other comprehensive income (loss), net of tax:
Interest rate swap	3	201	31	(422)
Foreign currency translation	1,396	(73)	3,565	(1,526)
Comprehensive income	4,435	5,954	12,156	10,970
Net income (loss) attributable to noncontrolling interest		22		(36)
Comprehensive income attributable to CECO Environmental Corp.	$ 4,435	$ 5,976	$ 12,156	$ 10,934

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 8,560,000	$ 12,918,000
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,105,000	15,017,000
Unrealized foreign currency gain	(2,030,000)	(620,000)
Net (gain) loss on interest rate swaps	(186,000)	342,000
Fair value adjustments to earnout liabilities	(5,689,000)	460,000
Earnout payments	(7,797,000)
Loss on sale of property and equipment	87,000	199,000
Debt discount amortization	753,000	803,000
Share-based compensation expense	1,179,000	1,724,000
Bad debt expense	2,184,000	324,000
Inventory reserve expense	829,000	964,000
Deferred income taxes	(164,000)	(1,111,000)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	12,718,000	15,221,000
Costs and estimated earnings in excess of billings on uncompleted contracts	(183,000)	3,449,000
Inventories	(606,000)	7,526,000
Prepaid expense and other current assets	1,720,000	(2,907,000)
Deferred charges and other assets	1,414,000	1,068,000
Accounts payable and accrued expenses	(9,072,000)	(10,010,000)
Billings in excess of costs and estimated earnings on uncompleted contracts	(14,526,000)	6,859,000
Income taxes payable	(857,000)	2,608,000
Other liabilities	(1,528,000)	(1,955,000)
Net cash (used in) provided by operating activities	(1,089,000)	52,879,000
Cash flows from investing activities:
Acquisitions of property and equipment	(806,000)	(811,000)
Proceeds from sale of property and equipment	367,000	301,000
Net cash used in investing activities	(439,000)	(510,000)
Cash flows from financing activities:
Decrease in short-term and long-term restricted cash	878,000	2,853,000
Net borrowings (repayments) on revolving credit lines	2,197,000	(13,142,000)
Repayments of debt	(9,161,000)	(31,631,000)
Deferred financing fees paid	(171,000)
Payoff of loans on life insurance policies		(987,000)
Earnout payments	(7,396,000)	(9,270,000)
Proceeds from sale-leaseback transactions		14,244,000
Payments on capital lease and sale-leaseback financing liability	(542,000)	(241,000)
Proceeds from employee stock purchase plan, exercise of stock options, and dividend reinvestment plan	1,372,000	763,000
Repurchases of common stock		(188,000)
Dividends paid to common shareholders	(7,787,000)	(6,738,000)
Net cash used in financing activities	(20,610,000)	(44,337,000)
Effect of exchange rate changes on cash and cash equivalents	881,000	(412,000)
Net (decrease) increase in cash and cash equivalents	(21,257,000)	7,620,000
Cash and cash equivalents at beginning of period	45,824,000	34,194,000
Cash and cash equivalents at end of period	24,567,000	41,814,000
Cash paid during the period for
Interest	4,176,000	5,375,000
Income taxes	$ 3,328,000	2,344,000
Non-cash transactions
Property, plant and equipment acquired under capital leases		4,385,000
Noncontrolling interest acquired through an issuance of a note payable (See Note 17)		5,300,000
Earnout settled through an exchange of accounts receivable		$ 3,272,000

Basis of Reporting for Consolid

Basis of Reporting for Consolidated Financial Statements	9 Months Ended
	Sep. 30, 2017
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”, “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 annual financial statements 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 September 30, 2017 and the results of operations and cash flows for the three-month and nine-month periods ended September 30, 2017 and 2016. The results of operations for the three-month and nine-month periods ended September 30, 2017 are not necessarily indicative of the results to be expected for the full year. The balance sheet as of December 31, 2016 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, 2016 as filed with the SEC. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“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 Company’s Annual Report on Form 10-K for the year ended December 31, 2016 filed with the SEC. Unless otherwise indicated, all balances within tables are in thousands, except per share amounts. The Company’s consolidated financial statements include the accounts of all wholly-owned and majority-owned subsidiaries for all periods presented. All significant inter-company accounts and transactions have been eliminated in consolidation. On July 12, 2016, the Company entered into an agreement with the noncontrolling owner of Peerless Propulsys China Holdings LLC (“Peerless Propulsys”) and acquired 100% ownership in the equity and earnings of Peerless Propulsys by acquiring the remaining 40% interest.

New Financial Accounting Pronou

New Financial Accounting Pronouncements	9 Months Ended
	Sep. 30, 2017
Accounting Changes And Error Corrections [Abstract]
New Financial Accounting Pronouncements	2. New Financial Accounting Pronouncements Accounting Standards Adopted in Fiscal 2017 In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, “Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates Step 2 of the former goodwill impairment test along with amending other parts of the goodwill impairment test. Under this ASU, an entity should perform its annual or interim goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount, and should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value with the loss not exceeding the total amount of goodwill allocated to that reporting unit. This ASU is effective for annual periods beginning after December 15, 2019, and interim periods therein with early adoption permitted for interim or annual goodwill impairment tests performed after January 1, 2017. The Company has adopted ASU 2017-04 effective as of January 1, 2017. The provisions of ASU 2017-04 did not have a material effect on the Company’s financial condition, results of operations, or cash flows. In March 2016, the FASB issued ASU 2016-09, “Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting,” which changes the accounting for certain aspects of share-based payments to employees. The new guidance requires, among its other provisions, that excess tax benefits (which represent the excess of actual tax benefits received at the date of vesting or settlement over the benefits recognized over the vesting period or upon issuance of share-based payments) and tax deficiencies (which represent the amount by which actual tax benefits received at the date of vesting or settlement is lower than the benefits recognized over the vesting period or upon issuance of share-based payments) be recorded in the income statement as an increase or decrease in income taxes when the awards vest or are settled. This is in comparison to the prior requirement that these excess tax benefits be recognized in additional paid-in capital and these tax deficiencies be recognized either as an offset to accumulated excess tax benefits, if any, or in the income statement. The new guidance also requires excess tax benefits to be classified along with other income tax cash flows as an operating activity in the statement of cash flows rather than, as previously required, a financing activity. The new guidance allows companies to elect a change to an accounting policy to account for forfeitures as they occur. The new guidance is effective for the first quarter of our fiscal year ending December 31, 2017, with early adoption permitted. We have adopted ASU 2016-09 effective January 1, 2017 on a prospective basis where permitted by the new standard. As a result of this adoption: • We recognized discrete tax benefits of $0.4 million in the income tax expense line item of our Condensed Consolidated Statement of Income for the nine months ended September 30, 2017 related to excess tax benefits upon vesting or settlement in that period. • We elected to adopt the cash flow presentation of the excess tax benefits prospectively, commencing with our Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2017, where these benefits are classified along with other income tax cash flows as an operating activity. • We have elected to change our accounting policy to account for forfeitures as they occur. This change was applied on a modified retrospective basis with a cumulative effect adjustment to reduce retained earnings by $0.1 million as of January 1, 2017. • We excluded the excess tax benefits from the assumed proceeds available to repurchase shares in the computation of our diluted earnings per share for the three and nine month periods ended September 30, 2017. In March 2016, the FASB issued ASU 2016-05, “Derivatives and Hedging: Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships.” ASU 2016-05 amends Topic 815 to clarify that novation of a derivative (replacing one of the parties to a derivative instrument with a new party) designated as the hedging instrument would not, in and of itself, be considered a termination of the derivative instrument or a change in critical terms requiring discontinuation of the designated hedging relationship. ASU 2016-05 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company has adopted ASU 2016-05 on a prospective basis. The provisions of ASU 2016-05 had no effect on the Company’s financial condition, results of operations, or cash flows. In July 2015, the FASB issued ASU 2015-11, “Simplifying the Measurement of Inventory.” ASU 2015-11 requires inventory within the scope of the ASU (i.e., first-in, first-out (“FIFO”) or average cost) to be measured using the lower of cost and net realizable value. Inventory excluded from the scope of the ASU (i.e., last-in, first-out (“LIFO”) or the retail inventory method) will continue to be measured at the lower of cost or market. The ASU also amends some of the other guidance in Topic 330, “Inventory,” to more clearly articulate the requirements for the measurement and disclosure of inventory. ASU 2015-11 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company has adopted ASU 2015-11 on a prospective basis. The provisions of ASU 2015-11 did not have a material effect on the Company’s financial condition, results of operations, or cash flows. In December 2016, the FASB issued ASU 2016-19, “Technical Corrections and Improvements.” The amendments cover a wide range of topics in the Accounting Standards Codification, guidance clarification, reference corrections, simplification, and minor improvements. The adoption of ASU 2016-19 is effective for annual periods, including interim periods, within those annual periods, beginning after December 15, 2016. The Company has adopted ASU 2016-19 on a prospective basis. The provisions of ASU 2016-19 did not have a material effect on the Company’s financial condition, results of operations, or cash flows. Accounting Standards Yet to be Adopted In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.” ASU 2017-12 expands an entity’s ability to apply hedge accounting for nonfinancial and financial risk components and allow for a simplified approach for fair value hedging of interest rate risk. ASU 2017-12 eliminates the need to separately measure and report hedge ineffectiveness and generally requires the entire change in fair value of a hedging instrument to be presented in the same income statement line as the hedged item. Additionally, ASU 2017-12 simplifies the hedge documentation and effectiveness assessment under the previous guidance. The guidance is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. Early adoption is permitted. We plan to adopt the standard on January 1, 2019. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, “Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting.” ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as a modification. The new guidance will reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as a modification. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if the award’s fair value, vesting conditions and classification as an equity or liability instrument are the same immediately before and after the change. ASU 2017-09 will be applied prospectively to awards modified on or after the adoption date. The guidance is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. We plan to adopt the standard on January 1, 2018. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, “Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” Under existing GAAP, an entity is required to present all components of net periodic pension cost and net periodic postretirement benefit cost aggregated as a net amount in the income statement, and this net amount may be capitalized as part of an asset where appropriate. ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period, and requires the other components of net periodic pension cost and net periodic postretirement benefit cost to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. Additionally, only the service cost component is eligible for capitalization, when applicable. The amendments in ASU 2017-07 shall be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic postretirement benefit cost in the income statement and prospectively, on and after the effective date, for the capitalization of the service cost component of net periodic pension cost and net periodic postretirement benefit in assets. ASU 2017-07 becomes effective for the Company on January 1, 2018. Early adoption is permitted. We plan to adopt this standard on January 1, 2018. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.” ASU 2017-01 clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation. The adoption of ASU 2017-01 is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. The amendments should be applied prospectively on or after the effective dates. The Company is evaluating the effect of this standard on its consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash.” ASU 2016-18 will require a change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents to be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that year. The Company is currently in the process of evaluating the impact of ASU 2016-18 on its consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 provides guidance on how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for annual periods beginning after December 15, 2017, and interim periods within those fiscal years. ASU 2016-15 will require adoption on a retrospective basis, unless it is impracticable to apply, in which case we would be required to apply the amendments prospectively as of the earliest date practicable. Early adoption is permitted, including adoption in an interim period. We plan to adopt this standard on January 1, 2018. The Company is currently in the process of evaluating the impact of ASU 2016-15 on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases.” ASU 2016-02 establishes a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The Company believes that the new standard will have a material impact on its consolidated balance sheet due to the recognition of ROU assets and liabilities for the Company’s operating leases but it will not have a material impact on its liquidity. The Company is continuing to evaluate potential impacts to its consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, “Revenue From Contracts With Customers.” ASU 2014-09 supersedes nearly all existing revenue recognition principles under GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration an entity expects to be entitled to for those goods or services using a defined five-step process. More judgment and estimates may be required to achieve this principle than under existing GAAP. In 2016, the FASB issued accounting standards updates to address implementation issues and to clarify the guidance for identifying performance obligations, licenses and determining if a company is the principal or agent in a revenue arrangement. ASU 2014-09 and its clarifying amendments are effective for annual periods beginning after December 15, 2017, including interim periods therein, using either of the following transition methods: (i) a full retrospective approach reflecting the application of the standard in each prior reporting period with the option to elect certain practical expedients or (ii) a modified retrospective approach with the cumulative effect upon initial adoption recognized at the date of adoption, which includes additional footnote disclosures. We currently expect to adopt ASU 2014-09 as of January 1, 2018, under the modified retrospective method where the cumulative effect is recognized at the date of initial application. The Company’s assessment efforts to date have included reviewing current accounting policies, processes, and system requirements, as well as assigning internal resources and engaging third-party consultants to assist in the process. Additionally, the Company has begun to review historical contracts and other arrangements to identify potential differences that could arise from the adoption of ASU 2014-09. Most notably, the Company is evaluating its current conclusions with respect to the timing of revenue recognition for certain contract arrangements where revenue is recognized over time, to determine whether the application of ASU 2014-09 necessitates changes to such reporting whereby revenue would be recognized at a point in time. The Company will continue to evaluate our business processes, systems and controls, and potential differences, if any, in the timing and method of revenue recognition. However, the Company will not be able to make a complete determination about the impact of the standard on its consolidated financial statements until the time of adoption based upon outstanding contracts at that time.

Accounts Receivable

Accounts Receivable	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Accounts Receivable	3. Accounts Receivable (Table only in thousands) September 30, 2017 December 31, 2016 Trade receivables $ 13,211 $ 11,976 Contract receivables 60,176 72,835 Allowance for doubtful accounts (2,883 ) (1,749 ) $ 70,504 $ 83,062 Balances billed but not paid by customers under retainage provisions in contracts amounted to approximately $2.6 million and $3.2 million at September 30, 2017 and December 31, 2016, respectively. Retainage receivables on contracts in progress are generally collected within a year after contract completion. The amounts charged to the provision for doubtful accounts were $1.2 million and $30,000 for the three-month periods ended September 30, 2017 and 2016, respectively, and $2.2 million and $0.3 million for the nine-month periods ended September 30, 2017 and 2016, respectively.

Costs and Estimated Earnings on

Costs and Estimated Earnings on Uncompleted Contracts	9 Months Ended
	Sep. 30, 2017
Text Block [Abstract]
Costs and Estimated Earnings on Uncompleted Contracts	4. Costs and Estimated Earnings on Uncompleted Contracts Revenues from contracts are primarily recognized on the percentage of completion method, measured by the percentage of contract costs incurred to date compared with estimated total contract costs for each contract. This method is used because management considers contract costs to be the best available measure of progress on these contracts. For contracts where the duration is short, total contract revenue is insignificant, or reasonably dependable estimates cannot be made, revenues are recognized on a completed contract basis, when risk and title passes to the customer, which is generally upon shipment of product. Our contracts have various lengths to completion ranging from a few days to a year. We anticipate that a majority of our current contracts will be completed within the next twelve months. (Table only in thousands) September 30, 2017 December 31, 2016 Costs incurred on uncompleted contracts $ 187,646 $ 186,609 Estimated earnings 67,533 77,709 255,179 264,318 Less billings to date (236,253 ) (261,280 ) $ 18,926 $ 3,038 Included in the accompanying condensed consolidated balance sheets under the following captions: Costs and estimated earnings in excess of billings on uncompleted contracts $ 39,964 $ 38,123 Billings in excess of costs and estimated earnings on uncompleted contracts 21,038 35,085 $ 18,926 $ 3,038 Provisions for estimated losses on uncompleted contracts are made in the period in which such losses are determined. Changes to job performance, job conditions, and estimated profitability may result in revisions to contract revenue and costs and are recognized in the period in which the revisions are made. A provision of $0.1 million for estimated losses on uncompleted contracts was recognized at September 30, 2017. No provision for estimated losses on uncompleted contracts was required at December 31, 2016.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Inventories	5. Inventories (Table only in thousands) September 30, 2017 December 31, 2016 Raw materials $ 19,750 $ 17,889 Work in process 3,310 3,986 Finished goods 1,261 1,508 Obsolescence allowance (2,571 ) (1,896 ) $ 21,750 $ 21,487 Amounts credited to the allowance for obsolete inventory and charged to cost of sales amounted to $0.5 million and $0.1 million for the three-month periods ended September 30, 2017 and 2016, respectively, and $0.8 million and $1.0 million for the nine-month periods ended September 30, 2017 and 2016, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	6. Goodwill and Intangible Assets (Table only in thousands) Nine months ended September 30, 2017 Year ended December 31, 2016 Goodwill / Indefinite Life Tradenames Goodwill Tradenames Goodwill Tradenames Beginning balance $ 170,153 $ 22,042 $ 220,163 $ 26,337 Acquisitions and related adjustments — — 4,205 — Impairment — — (53,762 ) (4,161 ) Foreign currency translation 1,086 339 (453 ) (134 ) $ 171,239 $ 22,381 $ 170,153 $ 22,042 (Table only in thousands) As of September 30, 2017 As of December 31, 2016 Intangible assets – finite life Cost Accum. Amort. Cost Accum. Amort. Technology $ 15,867 $ 8,040 $ 15,867 $ 6,360 Customer lists 77,497 32,758 77,497 26,041 Noncompetition agreements 1,118 643 1,118 478 Tradename 1,390 405 1,390 301 Foreign currency adjustments (1,453 ) (176 ) (2,964 ) (1,000 ) $ 94,419 $ 41,670 $ 92,908 $ 32,180 Activity for the nine months ended September 30, 2017 and 2016 is as follows: (Table only in thousands) 2017 2016 Intangible assets – finite life, net at beginning of period $ 60,728 $ 74,957 Amortization expense (8,666 ) (11,123 ) Foreign currency adjustments 687 142 Intangible assets – finite life, net at end of period $ 52,749 $ 63,976 Amortization expense of finite life intangible assets was $2.9 million and $3.5 million for the three-month periods ended September 30, 2017 and 2016, respectively, and $8.7 million and $11.1 million for the nine-month periods ended September 30, 2017 and 2016, respectively. The Company did not identify any triggering events during the three-month and nine-month periods ended September 30, 2017 that would require an interim impairment assessment of goodwill, finite life intangible assets, or indefinite life intangible assets. Therefore, there was no impairment of goodwill, finite life intangible assets, or indefinite life intangible assets during the three-month and nine-month periods ended September 30, 2017.

Accounts Payable and Accrued Ex

Accounts Payable and Accrued Expenses	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Accounts Payable and Accrued Expenses	7. Accounts Payable and Accrued Expenses (Table only in thousands) September 30, 2017 December 31, 2016 Trade accounts payable, including due to subcontractors $ 54,091 $ 58,985 Compensation and related benefits 4,528 8,232 Current portion of earn-out liability 3,514 13,527 Accrued warranty 4,244 2,684 Other accrued expenses 11,278 12,182 $ 77,655 $ 95,610 The activity in the Company’s current portion of earn-out liability and long-term portion of earn-out liability was as follows for the nine months ended September 30, 2017 and 2016: (Table only in thousands) Energy Segment Environmental Segment Total (1) Balance of earn-out at December 31, 2016 $ 24,214 $ — $ 24,214 Fair value adjustment (5,689 ) — (5,689 ) Compensation expense adjustment 918 — 918 Foreign currency translation adjustment 729 — 729 Payment (15,193 ) — (15,193 ) Total earn-out liability as of September 30, 2017 $ 4,979 $ — $ 4,979 Less: current portion of earn-out (3,514 ) — (3,514 ) Balance of long term portion of earn-out recorded in Other liabilities at September 30, 2017 $ 1,465 $ — $ 1,465 (Table only in thousands) Energy Segment Environmental Segment Total (1) Balance of earn-out at December 31, 2015 $ 29,304 $ 3,367 $ 32,671 Fair value adjustment 960 (500 ) 460 Compensation expense adjustment 923 — 923 Foreign currency translation adjustment (539 ) — (539 ) Settlement through an exchange of accounts receivable (3,272 ) — (3,272 ) Payment (8,170 ) (1,100 ) (9,270 ) Total earn-out liability as of September 30, 2016 $ 19,206 $ 1,767 $ 20,973 Less: current portion of earn-out (9,991 ) (1,267 ) (11,258 ) Balance of long term portion of earn-out recorded in Other liabilities at September 30, 2016 $ 9,215 $ 500 $ 9,715 (1) The Fluid Handling and Filtration segment does not have any earn-out arrangements associated with the segment.

Senior Debt

Senior Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Senior Debt	8. Senior debt Debt consisted of the following at September 30, 2017 and December 31, 2016: (Table only in thousands) September 30, 2017 December 31, 2016 Outstanding borrowings under the Credit Facility (defined below). Term loan payable in quarterly principal installments of $2.0 million through September 2018, $2.5 million thereafter with balance due upon maturity in September 2020. - Term loan $ 115,911 $ 125,072 - U.S. Dollar revolving loans 2,000 — - Unamortized debt discount and debt issuance costs (2,593 ) (3,175 ) Total outstanding borrowings under the Credit Facility 115,318 121,897 Outstanding borrowings (U.S. dollar equivalent) under the China Facility (defined below) — 1,296 Outstanding borrowings (U.S. dollar equivalent) under the Aarding Facility (defined below) 1,614 — Total outstanding borrowings 116,932 123,193 Less: current portion 9,645 8,827 Total debt, less current portion $ 107,287 $ 114,366 During the nine-month period ended September 30, 2017, the Company made prepayments of $4.3 million on the outstanding balance of the term loan. These prepayments were applied to future principal payments due under the term loan. Scheduled principal payments under our Credit Facility are $2.0 million for the remainder of 2017, $8.5 million in 2018, $10.0 million in 2019, and $97.4 million in 2020. United States Debt As of September 30, 2017 and December 31, 2016, $20.8 million and $18.0 million of letters of credit were outstanding, respectively. Total unused credit availability under the Company’s senior secured term loan, senior secured U.S. dollar revolving loans with sub-facilities for letters of credit and swing-line loans and senior secured multi-currency revolving credit facility for U.S. dollar and specific foreign currency loans (collectively, the “Credit Facility”) was $57.2 million and $62.0 million at September 30, 2017 and December 31, 2016, respectively. Revolving loans may be borrowed, repaid and reborrowed until September 3, 2020, at which time all amounts borrowed pursuant to the Credit Facility must be repaid. The weighted average interest rate on outstanding borrowings was 3.60% and 3.26% at September 30, 2017 and December 31, 2016, respectively. In accordance with the Credit Facility terms, the Company entered into an interest rate swap on December 30, 2015 to hedge against interest rate exposure related to approximately one-third of the outstanding debt indexed to LIBOR market rates. The fair value of the interest rate swap had no impact on the Condensed Consolidated Balance Sheet as of September 30, 2017. The fair value of the interest rate swap was a liability totaling $0.2 million at December 31, 2016, which is recorded in “Accounts payable and accrued expenses” on the Condensed Consolidated Balance Sheets. The Company did not designate the interest rate swap as an effective hedge until the first quarter of 2016, and accordingly the change in the fair value until the date of designation of $ 0.5 The Company amended the Credit Facility as of June 9, 2017. The Credit Facility was amended to, among other things, (a) modify the calculation of Consolidated EBITDA and Consolidated Fixed Charges to exclude certain pro forma adjustments related to certain acquisitions and other transactions and (b) modify the Consolidated Leverage Ratio covenant. The Company amended the Credit Facility as of October 31, 2017. The Credit Facility was amended to, among other things, (a) modify the calculation of Consolidated EBITDA and Consolidated Fixed Charges to exclude certain adjustments related to certain transactions (b) modify the Consolidated Leverage Ratio covenant and (c) add a covenant restricting the amount of capital expenditures we may make in fiscal years 2018 and 2019. Facility Facility As of September 30, 2017 and December 31, 2016, the Company was in compliance with all related financial and other restrictive covenants under the Credit Facility Foreign Debt A subsidiary of the Company located in the Netherlands has a Euro denominated facilities agreement with ING Bank N.V. (“Aarding Facility”) with a total borrowing capacity of $15.4 million. As of September 30, 2017 and December 31, 2016, the borrowers were in compliance with all related financial and other restrictive covenants. As of September 30, 2017, $4.6 million of the bank guarantee and $1.6 million of the overdraft facility are being used by the Company. As of December 31, 2016, $5.3 million of the bank guarantee and none of the overdraft facility was being used by the Company. There is no stated expiration date on the Aarding Facility. A subsidiary of the Company located in China has a Chinese Yuan Renminbi denominated short-term loan with Bank of America (“China Facility”) with an amount outstanding of $1.3 million as of December 31, 2016 at an interest rate of 4.79% . This loan was paid down in full during the nine months ended September 30, 2017. The total amount available for borrowing under the China Facility was $4.5 million and $4.3 million as of September 30, 2017 and December 31, 2016, respectively. As a result of the PMFG, Inc. (“PMFG”) acquisition in September 2015, the Company acquired a 60% equity investment in Peerless Propulsys that entitled the Company to 80% of Peerless Propulsys’s earnings. In prior periods, the noncontrolling interest of Peerless Propulsys was reported as a separate component on the Consolidated Balance Sheets. During July 2016, the Company entered into an agreement with the noncontrolling owner of Peerless Propulsys and issued a promissory note in the amount of $5.3 million due on July 11, 2019 in exchange for the remaining interest in Peerless Propulysys, which increased the Company’s ownership to 100% in the equity and earnings of Peerless Propulsys. The interest rate on the note payable is 1.50%, which approximates the market rate given the short-term duration of the note payable. The note payable is guaranteed by the Company. As of September 30, 2017 and December 31, 2016, $5.3 million of the principal amount of the note payable was outstanding. The note is payable at the earlier of July 11, 2019 or 30 days subsequent to the sale of building and land that the Company owns in China. As the Company intends to sell this building and land within one year of September 30, 2017, this note payable is currently classified as a current liability in the Consolidated Balance Sheets as of September 30, 2017.

Earnings and Dividends per Shar

Earnings and Dividends per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings and Dividends per Share	9. Earnings and Dividends per Share The computational components of basic and diluted earnings per share for the three-month and nine-month periods ended September 30, 2017 and 2016 are below. For the three-month period ended September 30, 2017 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 3,036 34,519 $ 0.09 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 103 — Diluted earnings and earnings per share $ 3,036 34,622 $ 0.09 For the three-month period ended September 30, 2016 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 5,804 33,984 $ 0.17 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 371 — Diluted earnings and earnings per share $ 5,804 34,355 $ 0.17 For the nine-month period ended September 30, 2017 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 8,560 34,404 $ 0.25 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 261 — Diluted earnings and earnings per share $ 8,560 34,665 $ 0.25 For the nine-month period ended September 30, 2016 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 12,954 33,953 $ 0.38 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 258 — Diluted earnings and earnings per share $ 12,954 34,211 $ 0.38 Options, restricted stock units and warrants included in the computation of diluted earnings per share are calculated using the treasury stock method. For the three-month periods ended September 30, 2017 and 2016, 0.8 million and 1.1 million, respectively, and 0.7 million and 1.4 million during the nine-month periods ended September 30, 2017 and 2016, respectively, of outstanding options and warrants 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. On August 7, 2017, the Company declared and, on September 29, 2017, paid to common stockholders a quarterly dividend of $0.075 per share. The dividend policy and the payment of cash dividends under that policy are subject to the Board of Directors’ continuing determination that the dividend policy and the declaration of dividends are in the best interest of the Company’s stockholders. On November 6, 2017, the Board of Directors reviewed the Company’s dividend policy and determined that it would be in the best interest of the stockholders to discontinue dividend payments. Future dividends and the dividend policy may be changed or cancelled at the Company’s discretion at any time. Payment of dividends is also subject to the continuing compliance with our financial covenants under our Credit Facility.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	10. Share-Based Compensation The Company’s 2017 Equity and Incentive Compensation Plan (the “2017 Plan”) was approved by the Company’s stockholders on May 16, 2017. The 2017 Plan permits the granting of stock options, which are granted with an exercise price equal to or greater than the fair market value of the Company’s common stock at the date of the grant, and other stock-based awards, including appreciation rights, restricted stock, restricted stock unit, performance shares and dividend equivalents. As of May 16, 2017, no further grants will be made under the Company’s 2007 Equity Incentive Plan (the “2007 Plan”), but outstanding awards under the 2007 Plan prior to such date will continue to be unaffected in accordance with their terms. The Company accounts for stock-based compensation in accordance with ASC Topic 718, “Compensation – Stock Compensation,” which requires the Company to recognize compensation expense for stock-based awards, measured at the fair value of the awards at the grant date. The Company recognized expense of $0.5 million and $0.6 million during the three-month periods ended September 30, 2017 and 2016, respectively, and $1.2 million and $1.7 million during the nine-month periods ended September 30, 2017 and 2016, respectively. Share based compensation expense was lower in 2017 primarily due to a large amount of forfeitures related to the former Chief Executive Officer’s departure from the Company. The Company granted no options during the three-month periods ended September 30, 2017 and 2016, respectively. The Company granted approximately 128,000 and 100,000 options during the nine-month periods ended September 30, 2017 and 2016, respectively. The weighted-average fair value of stock options granted during the nine months ended September 30, 2017 and 2016 was determined to be $2.68 and $2.07 per option, respectively, using the Black-Scholes option-pricing model based on the following assumptions: Expected Volatility: The Company utilizes a volatility factor based on the Company’s historical stock prices for a period of time equal to the expected term of the stock option utilizing weekly price observations. For the nine months ended September 30, 2017 and 2016, the Company utilized a weighted-average volatility factor of 39%. Expected Term: For the nine months ended September 30, 2017 and 2016, the Company utilized a weighted-average expected term factor of 6.3 years and 6.5 years, respectively. Risk-Free Interest Rate: The risk-free interest rate factor utilized is based upon the implied yields currently available on U.S. Treasury zero-coupon issues over the expected term of the stock options. For the nine months ended September 30, 2017 and 2016, the Company utilized a weighted-average risk-free interest rate factor of 2.1%. Expected Dividends: The Company utilized a weighted average expected dividend rate of 3.3% and 3.6% to value options granted during the nine months ended September 30, 2017 and 2016, respectively. The Company granted no restricted stock units during the three-month period ended September 30, 2017 and approximately 165,000 restricted stock units during the three-month period ended September 30, 2016. The Company granted approximately 405,000 and 270,000 restricted stock units during the nine-month periods ended September 30, 2017 and 2016, respectively. The weighted-average fair value of restricted stock units granted during the nine months ended September 30, 2017 and 2016 was determined to be $9.87 and $9.77 per unit, respectively, using the value of stock in the open market on the date of grant. On June 10, 2017, the Company granted 700,000 performance units to our Chief Executive Officer whose total value was determined to be $175,000 and will be expensed over the vesting period. The maximum shares of common stock that the participant could receive upon his performance units vesting is 77,778 shares. The performance units are earned based upon the Company’s stock price during 30 consecutive trading days within a specified date range of approximately two years. The performance units are settled in the Company’s common stock subsequent to this specified date range and vest approximately three years from the date of the grant. The estimated grant date fair value and compensation expense of each performance share is determined on the date of grant by using the Monte Carlo valuation model. The fair value of the stock-based awards, including the performance units, granted is recorded as compensation expense on a straight-line basis over the vesting periods of the awards. There were approximately 287,000 and 74,000 options exercised during the nine months ended September 30, 2017 and 2016, respectively. The Company received $1.1 million and $0.5 million in cash from employees and directors exercising options during the nine months ended September 30, 2017 and 2016, respectively. The intrinsic value of options exercised during the nine months ended September 30, 2017 and 2016 was $1.9 million and $0.2 million, respectively.

Pension and Employee Benefit Pl

Pension and Employee Benefit Plans	9 Months Ended
	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Pension and Employee Benefit Plans	11. 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. 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: (Table only in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Pension plan: Service cost $ 101 $ 112 $ 315 $ 335 Interest cost 329 356 986 1,069 Expected return on plan assets (431 ) (457 ) (1,292 ) (1,371 ) Amortization of net actuarial loss 57 53 170 159 Net periodic benefit cost $ 56 $ 64 $ 179 $ 192 Health care plan: Interest cost $ 1 $ 1 $ 2 $ 3 Amortization of loss 2 3 6 8 Net periodic benefit cost $ 3 $ 4 $ 8 $ 11 We made contributions to our defined benefit plans during the nine months ended September 30, 2017 and 2016 totaling $1.6 million and $29,000, respectively. We anticipate $0.3 million and $25,000 of further contributions to fund the pension plans and the retiree health care plan, respectively, during the remainder of 2017. The unfunded liability of the plans of $9.6 million and $11.1 million as of September 30, 2017 and December 31, 2016, respectively, is included in Other liabilities on our unaudited Condensed Consolidated Balance Sheets.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes The Company files income tax returns in various federal, state and local jurisdictions. Tax years from 2014 and onward remain open for examination by federal authorities. Tax years from 2012 and onward remain open for all significant state and foreign authorities. The Company accounts for uncertain tax positions pursuant to ASC Topic 740, “Income Taxes.” As of September 30, 2017 and December 31, 2016, the liability for uncertain tax positions totaled approximately $0.4 million, which is included in Other liabilities on our unaudited Condensed Consolidated Balance Sheets. The Company recognizes interest accrued related to uncertain tax positions in interest expense and penalties in income tax expense. The Company has not recorded deferred income taxes on the undistributed earnings of its foreign subsidiaries because of management’s intent to indefinitely reinvest such earnings.

Financial Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2017
Investments All Other Investments [Abstract]
Financial Instruments	1 3 . 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 September 30, 2017 and December 31, 2016, due to their short-term nature or variable, market-driven interest rates. The fair value of the debt issued under the Credit Facility In accordance with the terms of the Credit Facility At September 30, 2017 and December 31, 2016, we had cash and cash equivalents of $24.6 million and $45.8 million, respectively, of which $17.0 million and $25.6 million, respectively, was held outside of the United States, principally in the Netherlands, United Kingdom, China, and Canada. Restricted cash is held by the Company to collateralize letters of credit issued in foreign jurisdictions to support Company operations. The Company occasionally enters into letters of credit with durations in excess of one year.

Commitments and Contingencies -

Commitments and Contingencies - Legal Matters	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies - Legal Matters	1 4 . 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 September 30, 2017 for cases involving asbestos-related claims were $1.2 million, of which together with all legal fees other than corporate counsel expenses; $1.1 million have been paid by the Company’s insurers. The average cost per settled claim, excluding legal fees, was approximately $27,000. Based upon the most recent information available to the Company regarding such claims, there were a total of 223 cases pending against the Company as of September 30, 2017 (with Connecticut, New York, Pennsylvania and West Virginia having the largest number of cases), as compared with 229 cases that were pending as of December 31, 2016. During the nine months ended September 30, 2017, 39 new cases were filed against the Company, and the Company was dismissed from 40 cases and settled five cases. Most of the pending cases have not advanced beyond the discovery stage of litigation, although a number of cases are on schedules leading to, or are 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. Valero One of our subsidiaries, Fisher-Klosterman, Inc. (“FKI”), was a defendant in a products liability lawsuit filed in Harris County, Texas on August 23, 2010 by three Valero refining companies. The plaintiffs claimed that FKI (and its co-Defendants) used an allegedly defective refractory material included in cyclones it supplied to Valero that caused damages to refineries they own and operate. Plaintiffs claimed to have suffered property damages, including catalyst loss, regenerator repair costs, replacement part costs, damage to other property and business interruption loss. During 2014, the Company reached a settlement with the plaintiffs for $0.5 million and, accordingly, recorded a corresponding charge to operations. In addition, the Company reached an agreement with a supplier to recover $0.2 million related to this matter. The recovery was also recorded during 2014. The Company’s insurer, Valley Forge Insurance Company (“Valley Forge”), who had paid for the legal defense in this matter, initiated a new case in the Southern District of Ohio against the Company in October 2014 seeking, among other things, recoupment of past legal costs paid. Valley Forge claims that it did not have an obligation to defend FKI and is entitled to recoup all amounts paid to defend FKI. The Court rejected Valley Forge’s position on the duty to defend as contrary to Ohio law. The Court found that if Valley Forge could prove that FKI breached its duty to cooperate in defending the Valero Suit, Valley Forge may be relieved of its duty to defend to some extent. Valley Forge moved for reconsideration of the Court’s opinion in May 2016, which the court ruled against. The Court ruled in 2017 that Valley Forge could amend its complaint. The Company is vigorously disputing this claim, and is seeking to pursue counterclaims against the insurer. Summary The Company is also a party to routine contract and employment-related litigation matters 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 reserves 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 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.

Business Segment Information

Business Segment Information	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Business Segment Information	15. Business Segment Information The Company’s operations are organized and reviewed by management along its product lines or end market that the segment serves and presented in three reportable segments. Energy Segment Our Energy segment provides customized solutions for the power generation and petrochemical industry. This includes natural gas turbine exhaust systems, dampers and diverters, gas and liquid separation and filtration equipment, selective catalytic reduction (“SCR”) and selective non-catalytic reduction (“SNCR”) systems, acoustical components and silencers, secondary separators (nuclear plant reactor vessels) and expansion joints, the design and manufacture of technologies for flue gas and diverter dampers, non-metallic expansion joints, and silencer and precipitator applications, primarily for natural gas and coal-fired power plants, refining, oil production and petrochemical processing, as well as a variety of other industries. Environmental Segment Our Environmental segment provides the air pollution control technologies that enable our customers to reduce their carbon footprint, lower energy consumption, minimize waste and meet compliance targets for toxic emissions, fumes, volatile organic compounds, process and industrial odors. These products and solutions include chemical and biological scrubbers, fabric filters and cartridge collectors, thermal and catalytic oxidation systems, cyclones, separators, gas absorbers and industrial ventilation systems. In addition, this segment designs and manufactures fluid catalytic cracking unit cyclones used in the petroleum and petrochemical refining process. This segment also provides component parts for industrial air systems and provides cost effective alternatives to traditional duct components, as well as custom metal engineered fabrication services. These products and services are applicable to a wide variety of industries. Fluid Handling and Filtration Segment Our Fluid Handling and Filtration segment provides the design and manufacture of high quality pump, filtration and fume exhaust solutions. This includes centrifugal pumps for corrosive, abrasive and high temperature liquids, filter products for air and liquid filtration, precious metal recovery systems, carbonate precipitators, and technologically advanced air movement and exhaust systems. These products are applicable to a wide variety of industries, particularly the aquarium/aquaculture, plating and metal finishing, food and beverage, chemical/petrochemical, wastewater treatment, desalination and pharmaceutical markets. The accounting policies of the reporting segments are the same as those described in the summary of significant accounting policies in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 filed with the SEC. Interest income and expense are not included in the measure of segment profit reviewed by management. Income taxes are also not included in the measure of segment operating profit reviewed by management. The operating results of the segments are reviewed through to the “Income from operations” line on the Condensed Consolidated Statements of Income. The financial segment information is presented in the following tables: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Net Sales (less intra-, inter-segment sales) Energy Segment $ 36,182 $ 50,259 $ 114,681 $ 151,058 Environmental Segment 29,735 36,606 103,543 119,939 Fluid Handling and Filtration Segment 20,105 14,866 54,269 46,874 Corporate and Other (1) (1,035 ) (135 ) (985 ) (842 ) Net sales $ 84,987 $ 101,596 $ 271,508 $ 317,029 (1) Includes adjustment for revenue on intercompany jobs. Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Income from Operations Energy Segment $ 5,287 $ 8,502 $ 14,428 $ 20,065 Environmental Segment 2,157 5,459 12,043 16,324 Fluid Handling and Filtration Segment 4,299 3,109 11,756 9,507 Corporate and Other (2) (5,404 ) (6,520 ) (20,184 ) (20,058 ) Eliminations (709 ) (51 ) (1,808 ) (971 ) Income from operations $ 5,630 $ 10,499 $ 16,235 $ 24,867 (2) Includes corporate compensation, professional services, information technology, acquisition and integration expenses, and other general and administrative corporate expenses / income. This figure excludes earn-out expenses / income, which are recorded in the segment in which the expense / income occurs. See Note 7 for the earn-out expenses / income by segment. Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Property and Equipment Additions Energy Segment $ 69 $ 4 $ 419 $ 232 Environmental Segment 68 225 110 529 Fluid Handling and Filtration Segment (3) 17 1,118 236 4,428 Corporate and Other 11 1 41 7 Property and equipment additions $ 165 $ 1,348 $ 806 $ 5,196 (3) Includes non-cash additions of $1,089 and $4,385 for property, plant, and equipment acquired under capital leases during the three months ended September 30, 2016 and nine months ended September 30, 2016, respectively. Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Depreciation and Amortization Energy Segment $ 1,927 $ 2,341 $ 5,957 $ 8,082 Environmental Segment 813 994 2,500 2,868 Fluid Handling and Filtration Segment 1,168 1,321 3,563 3,969 Corporate and Other 29 33 85 98 Depreciation and Amortization $ 3,937 $ 4,689 $ 12,105 $ 15,017 (dollars in thousands) September 30, 2017 December 31, 2016 Identifiable Assets Energy Segment $ 234,575 $ 257,566 Environmental Segment 106,373 118,680 Fluid Handling and Filtration Segment 102,485 104,294 Corporate and Other (4) 12,110 18,094 Identifiable Assets $ 455,543 $ 498,634 (4) Corporate assets primarily consist of cash and income tax related assets. (dollars in thousands) September 30, 2017 December 31, 2016 Goodwill Energy Segment $ 76,913 $ 75,827 Environmental Segment 48,203 48,203 Fluid Handling and Filtration Segment 46,123 46,123 Goodwill $ 171,239 $ 170,153 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 September 30, 2017 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 37,290 $ (1,102 ) $ (6 ) $ — $ — $ — $ 36,182 Environmental Segment 30,138 (396 ) — (1 ) (6 ) — 29,735 Fluid Handling and Filtration Segment 20,768 (570 ) (55 ) (38 ) — — 20,105 Corporate and Other (5) — — — — — (1,035 ) (1,035 ) Net Sales $ 88,196 $ (2,068 ) $ (61 ) $ (39 ) $ (6 ) $ (1,035 ) $ 84,987 Three Months Ended September 30, 2016 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 51,155 $ (874 ) $ (22 ) $ — $ — $ — $ 50,259 Environmental Segment 38,454 (941 ) — (878 ) (29 ) — 36,606 Fluid Handling and Filtration Segment 15,451 (313 ) (88 ) (184 ) — — 14,866 Corporate and Other (5) — — — — — (135 ) (135 ) Net Sales $ 105,060 $ (2,128 ) $ (110 ) $ (1,062 ) $ (29 ) $ (135 ) $ 101,596 Nine Months Ended September 30, 2017 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 120,958 $ (6,249 ) $ (28 ) $ — $ — $ — $ 114,681 Environmental Segment 106,404 (2,086 ) — (730 ) (45 ) — 103,543 Fluid Handling and Filtration Segment 56,620 (1,727 ) (477 ) (147 ) — — 54,269 Corporate and Other (5) — — — — — (985 ) (985 ) Net Sales $ 283,982 $ (10,062 ) $ (505 ) $ (877 ) $ (45 ) $ (985 ) $ 271,508 Nine Months Ended September 30, 2016 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 153,476 $ (2,019 ) $ (399 ) $ — $ — $ — $ 151,058 Environmental Segment 126,029 (3,539 ) — (2,345 ) (206 ) — 119,939 Fluid Handling and Filtration Segment 48,508 (1,168 ) (282 ) (184 ) — — 46,874 Corporate and Other (5) — — — — — (842 ) (842 ) Net Sales $ 328,013 $ (6,726 ) $ (681 ) $ (2,529 ) $ (206 ) $ (842 ) $ 317,029 (5) Includes adjustment for revenue on intercompany jobs.

New Financial Accounting Pron22

New Financial Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Changes And Error Corrections [Abstract]
Accounting Standards Adopted in Fiscal 2017 and Yet to be Adopted	Accounting Standards Adopted in Fiscal 2017 In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, “Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates Step 2 of the former goodwill impairment test along with amending other parts of the goodwill impairment test. Under this ASU, an entity should perform its annual or interim goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount, and should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value with the loss not exceeding the total amount of goodwill allocated to that reporting unit. This ASU is effective for annual periods beginning after December 15, 2019, and interim periods therein with early adoption permitted for interim or annual goodwill impairment tests performed after January 1, 2017. The Company has adopted ASU 2017-04 effective as of January 1, 2017. The provisions of ASU 2017-04 did not have a material effect on the Company’s financial condition, results of operations, or cash flows. In March 2016, the FASB issued ASU 2016-09, “Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting,” which changes the accounting for certain aspects of share-based payments to employees. The new guidance requires, among its other provisions, that excess tax benefits (which represent the excess of actual tax benefits received at the date of vesting or settlement over the benefits recognized over the vesting period or upon issuance of share-based payments) and tax deficiencies (which represent the amount by which actual tax benefits received at the date of vesting or settlement is lower than the benefits recognized over the vesting period or upon issuance of share-based payments) be recorded in the income statement as an increase or decrease in income taxes when the awards vest or are settled. This is in comparison to the prior requirement that these excess tax benefits be recognized in additional paid-in capital and these tax deficiencies be recognized either as an offset to accumulated excess tax benefits, if any, or in the income statement. The new guidance also requires excess tax benefits to be classified along with other income tax cash flows as an operating activity in the statement of cash flows rather than, as previously required, a financing activity. The new guidance allows companies to elect a change to an accounting policy to account for forfeitures as they occur. The new guidance is effective for the first quarter of our fiscal year ending December 31, 2017, with early adoption permitted. We have adopted ASU 2016-09 effective January 1, 2017 on a prospective basis where permitted by the new standard. As a result of this adoption: • We recognized discrete tax benefits of $0.4 million in the income tax expense line item of our Condensed Consolidated Statement of Income for the nine months ended September 30, 2017 related to excess tax benefits upon vesting or settlement in that period. • We elected to adopt the cash flow presentation of the excess tax benefits prospectively, commencing with our Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2017, where these benefits are classified along with other income tax cash flows as an operating activity. • We have elected to change our accounting policy to account for forfeitures as they occur. This change was applied on a modified retrospective basis with a cumulative effect adjustment to reduce retained earnings by $0.1 million as of January 1, 2017. • We excluded the excess tax benefits from the assumed proceeds available to repurchase shares in the computation of our diluted earnings per share for the three and nine month periods ended September 30, 2017. In March 2016, the FASB issued ASU 2016-05, “Derivatives and Hedging: Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships.” ASU 2016-05 amends Topic 815 to clarify that novation of a derivative (replacing one of the parties to a derivative instrument with a new party) designated as the hedging instrument would not, in and of itself, be considered a termination of the derivative instrument or a change in critical terms requiring discontinuation of the designated hedging relationship. ASU 2016-05 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company has adopted ASU 2016-05 on a prospective basis. The provisions of ASU 2016-05 had no effect on the Company’s financial condition, results of operations, or cash flows. In July 2015, the FASB issued ASU 2015-11, “Simplifying the Measurement of Inventory.” ASU 2015-11 requires inventory within the scope of the ASU (i.e., first-in, first-out (“FIFO”) or average cost) to be measured using the lower of cost and net realizable value. Inventory excluded from the scope of the ASU (i.e., last-in, first-out (“LIFO”) or the retail inventory method) will continue to be measured at the lower of cost or market. The ASU also amends some of the other guidance in Topic 330, “Inventory,” to more clearly articulate the requirements for the measurement and disclosure of inventory. ASU 2015-11 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company has adopted ASU 2015-11 on a prospective basis. The provisions of ASU 2015-11 did not have a material effect on the Company’s financial condition, results of operations, or cash flows. In December 2016, the FASB issued ASU 2016-19, “Technical Corrections and Improvements.” The amendments cover a wide range of topics in the Accounting Standards Codification, guidance clarification, reference corrections, simplification, and minor improvements. The adoption of ASU 2016-19 is effective for annual periods, including interim periods, within those annual periods, beginning after December 15, 2016. The Company has adopted ASU 2016-19 on a prospective basis. The provisions of ASU 2016-19 did not have a material effect on the Company’s financial condition, results of operations, or cash flows. Accounting Standards Yet to be Adopted In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.” ASU 2017-12 expands an entity’s ability to apply hedge accounting for nonfinancial and financial risk components and allow for a simplified approach for fair value hedging of interest rate risk. ASU 2017-12 eliminates the need to separately measure and report hedge ineffectiveness and generally requires the entire change in fair value of a hedging instrument to be presented in the same income statement line as the hedged item. Additionally, ASU 2017-12 simplifies the hedge documentation and effectiveness assessment under the previous guidance. The guidance is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. Early adoption is permitted. We plan to adopt the standard on January 1, 2019. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, “Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting.” ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as a modification. The new guidance will reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as a modification. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if the award’s fair value, vesting conditions and classification as an equity or liability instrument are the same immediately before and after the change. ASU 2017-09 will be applied prospectively to awards modified on or after the adoption date. The guidance is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. We plan to adopt the standard on January 1, 2018. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, “Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” Under existing GAAP, an entity is required to present all components of net periodic pension cost and net periodic postretirement benefit cost aggregated as a net amount in the income statement, and this net amount may be capitalized as part of an asset where appropriate. ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period, and requires the other components of net periodic pension cost and net periodic postretirement benefit cost to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. Additionally, only the service cost component is eligible for capitalization, when applicable. The amendments in ASU 2017-07 shall be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic postretirement benefit cost in the income statement and prospectively, on and after the effective date, for the capitalization of the service cost component of net periodic pension cost and net periodic postretirement benefit in assets. ASU 2017-07 becomes effective for the Company on January 1, 2018. Early adoption is permitted. We plan to adopt this standard on January 1, 2018. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.” ASU 2017-01 clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation. The adoption of ASU 2017-01 is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. The amendments should be applied prospectively on or after the effective dates. The Company is evaluating the effect of this standard on its consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash.” ASU 2016-18 will require a change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents to be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that year. The Company is currently in the process of evaluating the impact of ASU 2016-18 on its consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 provides guidance on how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for annual periods beginning after December 15, 2017, and interim periods within those fiscal years. ASU 2016-15 will require adoption on a retrospective basis, unless it is impracticable to apply, in which case we would be required to apply the amendments prospectively as of the earliest date practicable. Early adoption is permitted, including adoption in an interim period. We plan to adopt this standard on January 1, 2018. The Company is currently in the process of evaluating the impact of ASU 2016-15 on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases.” ASU 2016-02 establishes a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The Company believes that the new standard will have a material impact on its consolidated balance sheet due to the recognition of ROU assets and liabilities for the Company’s operating leases but it will not have a material impact on its liquidity. The Company is continuing to evaluate potential impacts to its consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, “Revenue From Contracts With Customers.” ASU 2014-09 supersedes nearly all existing revenue recognition principles under GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration an entity expects to be entitled to for those goods or services using a defined five-step process. More judgment and estimates may be required to achieve this principle than under existing GAAP. In 2016, the FASB issued accounting standards updates to address implementation issues and to clarify the guidance for identifying performance obligations, licenses and determining if a company is the principal or agent in a revenue arrangement. ASU 2014-09 and its clarifying amendments are effective for annual periods beginning after December 15, 2017, including interim periods therein, using either of the following transition methods: (i) a full retrospective approach reflecting the application of the standard in each prior reporting period with the option to elect certain practical expedients or (ii) a modified retrospective approach with the cumulative effect upon initial adoption recognized at the date of adoption, which includes additional footnote disclosures. We currently expect to adopt ASU 2014-09 as of January 1, 2018, under the modified retrospective method where the cumulative effect is recognized at the date of initial application. The Company’s assessment efforts to date have included reviewing current accounting policies, processes, and system requirements, as well as assigning internal resources and engaging third-party consultants to assist in the process. Additionally, the Company has begun to review historical contracts and other arrangements to identify potential differences that could arise from the adoption of ASU 2014-09. Most notably, the Company is evaluating its current conclusions with respect to the timing of revenue recognition for certain contract arrangements where revenue is recognized over time, to determine whether the application of ASU 2014-09 necessitates changes to such reporting whereby revenue would be recognized at a point in time. The Company will continue to evaluate our business processes, systems and controls, and potential differences, if any, in the timing and method of revenue recognition. However, the Company will not be able to make a complete determination about the impact of the standard on its consolidated financial statements until the time of adoption based upon outstanding contracts at that time.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Summary of Accounts Receivable	(Table only in thousands) September 30, 2017 December 31, 2016 Trade receivables $ 13,211 $ 11,976 Contract receivables 60,176 72,835 Allowance for doubtful accounts (2,883 ) (1,749 ) $ 70,504 $ 83,062

Costs and Estimated Earnings 24

Costs and Estimated Earnings on Uncompleted Contracts (Tables)	9 Months Ended
	Sep. 30, 2017
Text Block [Abstract]
Costs and Estimated Earnings on Uncompleted Contracts	Our contracts have various lengths to completion ranging from a few days to a year. We anticipate that a majority of our current contracts will be completed within the next twelve months. (Table only in thousands) September 30, 2017 December 31, 2016 Costs incurred on uncompleted contracts $ 187,646 $ 186,609 Estimated earnings 67,533 77,709 255,179 264,318 Less billings to date (236,253 ) (261,280 ) $ 18,926 $ 3,038 Included in the accompanying condensed consolidated balance sheets under the following captions: Costs and estimated earnings in excess of billings on uncompleted contracts $ 39,964 $ 38,123 Billings in excess of costs and estimated earnings on uncompleted contracts 21,038 35,085 $ 18,926 $ 3,038

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Summary of Inventories	(Table only in thousands) September 30, 2017 December 31, 2016 Raw materials $ 19,750 $ 17,889 Work in process 3,310 3,986 Finished goods 1,261 1,508 Obsolescence allowance (2,571 ) (1,896 ) $ 21,750 $ 21,487

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill / Indefinite Life Tradenames	(Table only in thousands) Nine months ended September 30, 2017 Year ended December 31, 2016 Goodwill / Indefinite Life Tradenames Goodwill Tradenames Goodwill Tradenames Beginning balance $ 170,153 $ 22,042 $ 220,163 $ 26,337 Acquisitions and related adjustments — — 4,205 — Impairment — — (53,762 ) (4,161 ) Foreign currency translation 1,086 339 (453 ) (134 ) $ 171,239 $ 22,381 $ 170,153 $ 22,042
Intangible Assets - Finite Life	(Table only in thousands) As of September 30, 2017 As of December 31, 2016 Intangible assets – finite life Cost Accum. Amort. Cost Accum. Amort. Technology $ 15,867 $ 8,040 $ 15,867 $ 6,360 Customer lists 77,497 32,758 77,497 26,041 Noncompetition agreements 1,118 643 1,118 478 Tradename 1,390 405 1,390 301 Foreign currency adjustments (1,453 ) (176 ) (2,964 ) (1,000 ) $ 94,419 $ 41,670 $ 92,908 $ 32,180
Summary of Finite Lived Intangible Assets Activities	Activity for the nine months ended September 30, 2017 and 2016 is as follows: (Table only in thousands) 2017 2016 Intangible assets – finite life, net at beginning of period $ 60,728 $ 74,957 Amortization expense (8,666 ) (11,123 ) Foreign currency adjustments 687 142 Intangible assets – finite life, net at end of period $ 52,749 $ 63,976

Accounts Payable and Accrued 27

Accounts Payable and Accrued Expenses (Tables)	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Summary of Accounts Payable and Accrued Expenses	(Table only in thousands) September 30, 2017 December 31, 2016 Trade accounts payable, including due to subcontractors $ 54,091 $ 58,985 Compensation and related benefits 4,528 8,232 Current portion of earn-out liability 3,514 13,527 Accrued warranty 4,244 2,684 Other accrued expenses 11,278 12,182 $ 77,655 $ 95,610
Schedule of Current and Long term Portion of Earn-out Liability	The activity in the Company’s current portion of earn-out liability and long-term portion of earn-out liability was as follows for the nine months ended September 30, 2017 and 2016: (Table only in thousands) Energy Segment Environmental Segment Total (1) Balance of earn-out at December 31, 2016 $ 24,214 $ — $ 24,214 Fair value adjustment (5,689 ) — (5,689 ) Compensation expense adjustment 918 — 918 Foreign currency translation adjustment 729 — 729 Payment (15,193 ) — (15,193 ) Total earn-out liability as of September 30, 2017 $ 4,979 $ — $ 4,979 Less: current portion of earn-out (3,514 ) — (3,514 ) Balance of long term portion of earn-out recorded in Other liabilities at September 30, 2017 $ 1,465 $ — $ 1,465 (Table only in thousands) Energy Segment Environmental Segment Total (1) Balance of earn-out at December 31, 2015 $ 29,304 $ 3,367 $ 32,671 Fair value adjustment 960 (500 ) 460 Compensation expense adjustment 923 — 923 Foreign currency translation adjustment (539 ) — (539 ) Settlement through an exchange of accounts receivable (3,272 ) — (3,272 ) Payment (8,170 ) (1,100 ) (9,270 ) Total earn-out liability as of September 30, 2016 $ 19,206 $ 1,767 $ 20,973 Less: current portion of earn-out (9,991 ) (1,267 ) (11,258 ) Balance of long term portion of earn-out recorded in Other liabilities at September 30, 2016 $ 9,215 $ 500 $ 9,715 (1) The Fluid Handling and Filtration segment does not have any earn-out arrangements associated with the segment.

Senior Debt (Tables)

Senior Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Summary of Debt	Debt consisted of the following at September 30, 2017 and December 31, 2016: (Table only in thousands) September 30, 2017 December 31, 2016 Outstanding borrowings under the Credit Facility (defined below). Term loan payable in quarterly principal installments of $2.0 million through September 2018, $2.5 million thereafter with balance due upon maturity in September 2020. - Term loan $ 115,911 $ 125,072 - U.S. Dollar revolving loans 2,000 — - Unamortized debt discount and debt issuance costs (2,593 ) (3,175 ) Total outstanding borrowings under the Credit Facility 115,318 121,897 Outstanding borrowings (U.S. dollar equivalent) under the China Facility (defined below) — 1,296 Outstanding borrowings (U.S. dollar equivalent) under the Aarding Facility (defined below) 1,614 — Total outstanding borrowings 116,932 123,193 Less: current portion 9,645 8,827 Total debt, less current portion $ 107,287 $ 114,366

Earnings and Dividends per Sh29

Earnings and Dividends per Share (Tables)	9 Months Ended
	Sep. 30, 2017
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 and nine-month periods ended September 30, 2017 and 2016 are below. For the three-month period ended September 30, 2017 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 3,036 34,519 $ 0.09 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 103 — Diluted earnings and earnings per share $ 3,036 34,622 $ 0.09 For the three-month period ended September 30, 2016 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 5,804 33,984 $ 0.17 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 371 — Diluted earnings and earnings per share $ 5,804 34,355 $ 0.17 For the nine-month period ended September 30, 2017 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 8,560 34,404 $ 0.25 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 261 — Diluted earnings and earnings per share $ 8,560 34,665 $ 0.25 For the nine-month period ended September 30, 2016 Numerator (Income) Denominator (Shares) Per Share Amount Basic net income and earnings per share $ 12,954 33,953 $ 0.38 Effect of dilutive securities: Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan — 258 — Diluted earnings and earnings per share $ 12,954 34,211 $ 0.38

Pension and Employee Benefit 30

Pension and Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Components of Pension and Employee Benefit Expenses	The components of the expense consisted of the following: (Table only in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Pension plan: Service cost $ 101 $ 112 $ 315 $ 335 Interest cost 329 356 986 1,069 Expected return on plan assets (431 ) (457 ) (1,292 ) (1,371 ) Amortization of net actuarial loss 57 53 170 159 Net periodic benefit cost $ 56 $ 64 $ 179 $ 192 Health care plan: Interest cost $ 1 $ 1 $ 2 $ 3 Amortization of loss 2 3 6 8 Net periodic benefit cost $ 3 $ 4 $ 8 $ 11

Business Segment Information (T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2017
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 September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Net Sales (less intra-, inter-segment sales) Energy Segment $ 36,182 $ 50,259 $ 114,681 $ 151,058 Environmental Segment 29,735 36,606 103,543 119,939 Fluid Handling and Filtration Segment 20,105 14,866 54,269 46,874 Corporate and Other (1) (1,035 ) (135 ) (985 ) (842 ) Net sales $ 84,987 $ 101,596 $ 271,508 $ 317,029 (1) Includes adjustment for revenue on intercompany jobs. Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Income from Operations Energy Segment $ 5,287 $ 8,502 $ 14,428 $ 20,065 Environmental Segment 2,157 5,459 12,043 16,324 Fluid Handling and Filtration Segment 4,299 3,109 11,756 9,507 Corporate and Other (2) (5,404 ) (6,520 ) (20,184 ) (20,058 ) Eliminations (709 ) (51 ) (1,808 ) (971 ) Income from operations $ 5,630 $ 10,499 $ 16,235 $ 24,867 (2) Includes corporate compensation, professional services, information technology, acquisition and integration expenses, and other general and administrative corporate expenses / income. This figure excludes earn-out expenses / income, which are recorded in the segment in which the expense / income occurs. See Note 7 for the earn-out expenses / income by segment.
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets	Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Property and Equipment Additions Energy Segment $ 69 $ 4 $ 419 $ 232 Environmental Segment 68 225 110 529 Fluid Handling and Filtration Segment (3) 17 1,118 236 4,428 Corporate and Other 11 1 41 7 Property and equipment additions $ 165 $ 1,348 $ 806 $ 5,196 (3) Includes non-cash additions of $1,089 and $4,385 for property, plant, and equipment acquired under capital leases during the three months ended September 30, 2016 and nine months ended September 30, 2016, respectively. Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2017 2016 2017 2016 Depreciation and Amortization Energy Segment $ 1,927 $ 2,341 $ 5,957 $ 8,082 Environmental Segment 813 994 2,500 2,868 Fluid Handling and Filtration Segment 1,168 1,321 3,563 3,969 Corporate and Other 29 33 85 98 Depreciation and Amortization $ 3,937 $ 4,689 $ 12,105 $ 15,017 (dollars in thousands) September 30, 2017 December 31, 2016 Identifiable Assets Energy Segment $ 234,575 $ 257,566 Environmental Segment 106,373 118,680 Fluid Handling and Filtration Segment 102,485 104,294 Corporate and Other (4) 12,110 18,094 Identifiable Assets $ 455,543 $ 498,634 (4) Corporate assets primarily consist of cash and income tax related assets.
Goodwill	(dollars in thousands) September 30, 2017 December 31, 2016 Goodwill Energy Segment $ 76,913 $ 75,827 Environmental Segment 48,203 48,203 Fluid Handling and Filtration Segment 46,123 46,123 Goodwill $ 171,239 $ 170,153
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 September 30, 2017 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 37,290 $ (1,102 ) $ (6 ) $ — $ — $ — $ 36,182 Environmental Segment 30,138 (396 ) — (1 ) (6 ) — 29,735 Fluid Handling and Filtration Segment 20,768 (570 ) (55 ) (38 ) — — 20,105 Corporate and Other (5) — — — — — (1,035 ) (1,035 ) Net Sales $ 88,196 $ (2,068 ) $ (61 ) $ (39 ) $ (6 ) $ (1,035 ) $ 84,987 Three Months Ended September 30, 2016 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 51,155 $ (874 ) $ (22 ) $ — $ — $ — $ 50,259 Environmental Segment 38,454 (941 ) — (878 ) (29 ) — 36,606 Fluid Handling and Filtration Segment 15,451 (313 ) (88 ) (184 ) — — 14,866 Corporate and Other (5) — — — — — (135 ) (135 ) Net Sales $ 105,060 $ (2,128 ) $ (110 ) $ (1,062 ) $ (29 ) $ (135 ) $ 101,596 Nine Months Ended September 30, 2017 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 120,958 $ (6,249 ) $ (28 ) $ — $ — $ — $ 114,681 Environmental Segment 106,404 (2,086 ) — (730 ) (45 ) — 103,543 Fluid Handling and Filtration Segment 56,620 (1,727 ) (477 ) (147 ) — — 54,269 Corporate and Other (5) — — — — — (985 ) (985 ) Net Sales $ 283,982 $ (10,062 ) $ (505 ) $ (877 ) $ (45 ) $ (985 ) $ 271,508 Nine Months Ended September 30, 2016 Less Inter-Segment Sales (dollars in thousands) Total Sales Intra- Segment Sales Environmental Energy FHF Corp and Other Net Outside Customers Net Sales Energy Segment $ 153,476 $ (2,019 ) $ (399 ) $ — $ — $ — $ 151,058 Environmental Segment 126,029 (3,539 ) — (2,345 ) (206 ) — 119,939 Fluid Handling and Filtration Segment 48,508 (1,168 ) (282 ) (184 ) — — 46,874 Corporate and Other (5) — — — — — (842 ) (842 ) Net Sales $ 328,013 $ (6,726 ) $ (681 ) $ (2,529 ) $ (206 ) $ (842 ) $ 317,029 (5) Includes adjustment for revenue on intercompany jobs.

Basis of Reporting for Consol32

Basis of Reporting for Consolidated Financial Statements - Additional Information (Detail)	Jul. 12, 2016
Peerless Propulsys [Member]
Basis Of Presentation And Principles Of Consolidation [Line Items]
CECO Group Global Holdings LLC	100.00%

New Financial Accounting Pron33

New Financial Accounting Pronouncements - Additional Information (Detail) - ASU 2016-09 [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Jan. 01, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Discrete tax benefit	$ 0.4
Retained Earnings [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative effect adjustment to reduce retained earnings		$ 0.1

Accounts Receivable - Summary o

Accounts Receivable - Summary of Accounts Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract receivables	$ 60,176	$ 72,835
Allowance for doubtful accounts	(2,883)	(1,749)
Accounts receivable, Total	70,504	83,062
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables	$ 13,211	$ 11,976

Accounts Receivable - Additiona

Accounts Receivable - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Receivables [Abstract]
Amount billed but not received under retainage provisions in contracts	$ 2,600,000		$ 2,600,000		$ 3,200,000
Retainage receivables on contracts period			1 year
Provision for doubtful accounts	$ 1,200,000	$ 30,000	$ 2,184,000	$ 324,000

Costs and Estimated Earnings 36

Costs and Estimated Earnings on Uncompleted Contracts - Costs and Estimated Earnings on Uncompleted Contracts (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Costs In Excess Of Billings On Uncompleted Contracts Or Programs [Abstract]
Costs incurred on uncompleted contracts	$ 187,646	$ 186,609
Estimated earnings	67,533	77,709
Contract Revenues	255,179	264,318
Less billings to date	(236,253)	(261,280)
Net bills receivable	18,926	3,038
Included in the accompanying condensed consolidated balance sheets under the following captions:
Costs and estimated earnings in excess of billings on uncompleted contracts	39,964	38,123
Billings in excess of costs and estimated earnings on uncompleted contracts	21,038	35,085
Net bills receivable	$ 18,926	$ 3,038

Costs and Estimated Earnings 37

Costs and Estimated Earnings on Uncompleted Contracts - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Costs In Excess Of Billings On Uncompleted Contracts Or Programs [Abstract]
Provision for estimated losses on uncompleted contracts	$ 100,000	$ 0

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Inventory Net [Abstract]
Raw materials	$ 19,750	$ 17,889
Work in process	3,310	3,986
Finished goods	1,261	1,508
Obsolescence allowance	(2,571)	(1,896)
Inventory, net	$ 21,750	$ 21,487

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Inventory Disclosure [Abstract]
Amounts credited to the allowance for obsolete inventory	$ 0.5	$ 0.1	$ 0.8	$ 1

Goodwill and Intangible Asset40

Goodwill and Intangible Assets - Goodwill / Indefinite Life Tradenames (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, beginning balance	$ 170,153	$ 220,163
Goodwill, acquisitions and related adjustments		4,205
Goodwill, impairment		(53,762)
Goodwill, foreign currency translation	1,086	(453)
Goodwill, ending balance	171,239	170,153
Tradenames, beginning balance	22,042	26,337
Tradenames, impairment		(4,161)
Tradenames, foreign currency translation	339	(134)
Tradenames, ending balance	$ 22,381	$ 22,042

Goodwill and Intangible Asset41

Goodwill and Intangible Assets - Intangible Assets - Finite Life (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Cost	$ 94,419	$ 92,908
Accumulated Amortization	41,670	32,180
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	15,867	15,867
Accumulated Amortization	8,040	6,360
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	77,497	77,497
Accumulated Amortization	32,758	26,041
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	1,118	1,118
Accumulated Amortization	643	478
Tradename [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	1,390	1,390
Accumulated Amortization	405	301
Foreign Currency Adjustments [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	(1,453)	(2,964)
Accumulated Amortization	$ (176)	$ (1,000)

Goodwill and Intangible Asset42

Goodwill and Intangible Assets - Finite Lived Intangible Assets Amortization Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible assets – finite life, net at beginning of period			$ 60,728	$ 74,957
Amortization expense	$ (2,900)	$ (3,500)	(8,666)	(11,123)
Foreign currency adjustments			687	142
Intangible assets – finite life, net at end of period	$ 52,749	$ 63,976	$ 52,749	$ 63,976

Goodwill and Intangible Asset43

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense of finite life intangible assets	$ 2,900,000	$ 3,500,000	$ 8,666,000	$ 11,123,000
Goodwill, finite life or indefinite life intangible asset charges	$ 0		$ 0

Accounts Payable and Accrued 44

Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Payables And Accruals [Abstract]
Trade accounts payable, including due to subcontractors	$ 54,091	$ 58,985
Compensation and related benefits	4,528	8,232
Current portion of earn-out liability	3,514	13,527	$ 11,258
Accrued warranty	4,244	2,684
Other accrued expenses	11,278	12,182
Accounts payable and accrued expenses	$ 77,655	$ 95,610

Accounts Payable and Accrued 45

Accounts Payable and Accrued Expenses - Summary of Current Portion of Earn-out Liabilities and Long term Portion of Earn-out Liability (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Business Acquisition Contingent Consideration [Line Items]
Balance of earn-out at beginning of period	$ 24,214	$ 32,671
Fair value adjustment	(5,689)	460
Compensation expense adjustment	918	923
Foreign currency translation adjustment	729	(539)
Settlement through an exchange of accounts receivable		(3,272)
Payment	(15,193)	(9,270)
Total earn-out liability at end of period	4,979	20,973
Less: current portion of earn-out	(3,514)	(11,258)	$ (13,527)
Balance of long term portion of earn-out recorded in Other liabilities at end of period	1,465	9,715
Energy Segment [Member]
Business Acquisition Contingent Consideration [Line Items]
Balance of earn-out at beginning of period	24,214	29,304
Fair value adjustment	(5,689)	960
Compensation expense adjustment	918	923
Foreign currency translation adjustment	729	(539)
Settlement through an exchange of accounts receivable		(3,272)
Payment	(15,193)	(8,170)
Total earn-out liability at end of period	4,979	19,206
Less: current portion of earn-out	(3,514)	(9,991)
Balance of long term portion of earn-out recorded in Other liabilities at end of period	$ 1,465	9,215
Environmental Segment [Member]
Business Acquisition Contingent Consideration [Line Items]
Balance of earn-out at beginning of period		3,367
Fair value adjustment		(500)
Payment		(1,100)
Total earn-out liability at end of period		1,767
Less: current portion of earn-out		(1,267)
Balance of long term portion of earn-out recorded in Other liabilities at end of period		$ 500

Senior Debt - Summary of Debt (

Senior Debt - Summary of Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total outstanding borrowings	$ 116,932	$ 123,193
Less: current portion	9,645	8,827
Total debt, less current portion	107,287	114,366
Term Loan [Member]
Debt Instrument [Line Items]
Total outstanding borrowings	115,911	125,072
US Dollar Borrowings [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Total outstanding borrowings	115,318	121,897
US Dollar Borrowings [Member] | U.S. Dollar Revolving Loans [Member]
Debt Instrument [Line Items]
Total outstanding borrowings under Credit Facility	2,000
US Dollar Borrowings [Member] | China Facility [Member]
Debt Instrument [Line Items]
Total outstanding borrowings under Credit Facility		1,296
Term Debt [Member]
Debt Instrument [Line Items]
Unamortized debt discount and debt issuance costs	(2,593)	$ (3,175)
Aarding Thermal Acoustics B.V. ("Aarding") [Member] | US Dollar Borrowings [Member]
Debt Instrument [Line Items]
Total outstanding borrowings under Credit Facility	$ 1,614

Senior Debt - Summary of Debt47

Senior Debt - Summary of Debt (Parenthetical) (Detail) - Term Loan [Member] $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Debt Instrument, Redemption, through September 2018 [Member]
Debt Instrument [Line Items]
Outstanding borrowings, quarterly principal installments payable amount	$ 2
Term loans, year of maturity	2018-09
Debt Instrument, Redemption, through September 2020 [Member]
Debt Instrument [Line Items]
Outstanding borrowings, quarterly principal installments payable amount	$ 2.5
Term loans, year of maturity	2020-09

Senior Debt - Additional Inform

Senior Debt - Additional Information (Detail) - USD ($)	Oct. 31, 2017	Jul. 12, 2016	Sep. 30, 2015	Mar. 31, 2016	Sep. 30, 2017	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2016
Line Of Credit Facility [Line Items]
Prepayment of outstanding debt					$ 4,300,000
Credit facility, principal payment remainder of 2017					2,000,000
Credit facility, principal payment 2018					8,500,000
Credit facility, principal payment 2019					10,000,000
Credit facility, principal payment 2020					$ 97,400,000
Weighted average interest rate on outstanding borrowings					3.60%			3.26%
Interest rate swap, fair value								$ 200,000
Changes in fair value income (loss)				$ 500,000
Credit facility, date of amendment	Oct. 31, 2017				Jun. 9, 2017
Maximum consolidated leverage ratio					325.00%
ING Bank N.V. ("Aarding") [Member]
Line Of Credit Facility [Line Items]
Total borrowing capacity					$ 15,400,000			15,400,000
ING Bank N.V. ("Aarding") [Member] | Bank Overdrafts [Member]
Line Of Credit Facility [Line Items]
Total outstanding borrowings under Credit Facility					$ 1,600,000			0
Peerless Propulsys [Member]
Line Of Credit Facility [Line Items]
Ownership interest in the equity and earnings		100.00%
Peerless Propulsys [Member] | PMFG, Inc. [Member]
Line Of Credit Facility [Line Items]
Interest rate					1.50%
Noncontrolling interest, ownership percentage by parent			60.00%
Percentage of ownership by parent in net income loss			80.00%
Promissory note issued in exchange for ownership in equity		$ 5,300,000
Promissory note due date					Jul. 11, 2019
Ownership interest in the equity and earnings					100.00%
Notes payable amount outstanding					$ 5,300,000			5,300,000
Debt Instrument, Term					30 days
Notes payable description					The note is payable at the earlier of July 11, 2019 or 30 days subsequent to the sale of building and land that the Company owns in China.
Building and land expected for sale, period					1 year
Subsequent Event [Member]
Line Of Credit Facility [Line Items]
Maximum consolidated leverage ratio	375.00%
Scenario Forecast [Member]
Line Of Credit Facility [Line Items]
Maximum consolidated leverage ratio						325.00%	350.00%
Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Unused credit availability under credit facility					$ 57,200,000			62,000,000
Letters of Credit [Member]
Line Of Credit Facility [Line Items]
Aggregate principal amount outstanding under the credit facilities					20,800,000			18,000,000
Bank Guarantee Facility [Member] | ING Bank N.V. ("Aarding") [Member]
Line Of Credit Facility [Line Items]
Aggregate principal amount outstanding under the bank gaurantee					4,600,000			5,300,000
China Facility [Member]
Line Of Credit Facility [Line Items]
Total borrowing capacity					$ 4,500,000			$ 4,300,000
Interest rate								4.79%
China Facility [Member] | US Dollar Borrowings [Member]
Line Of Credit Facility [Line Items]
Total outstanding borrowings under Credit Facility								$ 1,296,000

Earnings and Dividends per Sh49

Earnings and Dividends per Share - Number of Shares Outstanding for Calculation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Basic net income and earnings per share, Numerator (Income)	$ 3,036	$ 5,804	$ 8,560	$ 12,954
Diluted earnings and earnings per share, Numerator (Income)	$ 3,036	$ 5,804	$ 8,560	$ 12,954
Basic net income and earnings per share, Denominator (Shares)	34,518,622	33,983,708	34,403,720	33,952,768
Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan, Denominator (Shares)	103,000	371,000	261,000	258,000
Diluted earnings and earnings per share, Denominator (Shares)	34,621,883	34,354,687	34,665,053	34,211,067
Basic net income and earnings per share, Per Share Amount	$ 0.09	$ 0.17	$ 0.25	$ 0.38
Diluted earnings and earnings per share, Per Share Amount	$ 0.09	$ 0.17	$ 0.25	$ 0.38

Earnings and Dividends per Sh50

Earnings and Dividends per Share - Additional Information (Detail) - $ / shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Aug. 07, 2017
Earnings And Dividends Per Share [Abstract]
Shares not included in computation of diluted Earning per share	0.8	1.1	0.7	1.4
Quarterly dividend declared per share					$ 0.075
Dividend payable date			Sep. 29, 2017
Common Stock, dividends, per share, Paid			$ 0.075

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($)	Jun. 10, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized share-based compensation awards		$ 500,000	$ 600,000	$ 1,200,000	$ 1,700,000
Number of stock option granted		0	0	128,000	100,000
Weighted-average fair value of stock options granted				$ 2.68	$ 2.07
Expected Volatility Rate				39.00%	39.00%
Expected Term Period				6 years 3 months 19 days	6 years 6 months
Risk-Free Interest Rate				2.10%	2.10%
Expected dividend rate				3.30%	3.60%
Number of options exercised				287,000	74,000
Cash received from employees and directors stock option exercised				$ 1,100,000	$ 500,000
Intrinsic value of option exercised				$ 1,900,000	$ 200,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock awards granted		0	165,000	405,000	270,000
Weighted-average fair value of restricted stock unit granted				$ 9.87	$ 9.77
Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock price threshold consecutive trading days				30 days
Period to earn units based on stock price during thirty consecutive trading days				2 years
Share-based payment award vesting period				3 years
Maximum shares of common stock participant could receive per performance				77,778
Performance Units [Member] | Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock awards granted	700,000
Value of stock awards granted	$ 175,000

Pension and Employee Benefit 52

Pension and Employee Benefit Plans - Components of Pension and Employee Benefit Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 101	$ 112	$ 315	$ 335
Interest cost	329	356	986	1,069
Expected return on plan assets	(431)	(457)	(1,292)	(1,371)
Amortization of net actuarial loss	57	53	170	159
Net periodic benefit cost	56	64	179	192
Health Care Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	1	1	2	3
Amortization of loss	2	3	6	8
Net periodic benefit cost	$ 3	$ 4	$ 8	$ 11

Pension and Employee Benefit 53

Pension and Employee Benefit Plans - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan contributions	$ 1,600,000	$ 29,000
Unfunded liability plans	9,600,000		$ 11,100,000
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Anticipated contribution to fund the pension plan during the reminder of the fiscal year	300,000
Health Care Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Anticipated contribution to fund the pension plan during the reminder of the fiscal year	$ 25,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Liability for uncertain tax positions totaled	$ 0.4	$ 0.4

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Fair Value Of Financial Instruments [Line Items]
Fair value of note payable	$ 5,300	$ 5,300
Cash and cash equivalents	24,567	45,824	$ 41,814	$ 34,194
Cash held outside United States, principally in Netherlands, United Kingdom, China, and Canada	17,000	25,600
Credit Facility [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of debt issued	$ 117,900	$ 125,100

Commitments and Contingencies56

Commitments and Contingencies - Legal Matters - Additional Information (Detail)	9 Months Ended	12 Months Ended	189 Months Ended
	Sep. 30, 2017USD ($)Case	Dec. 31, 2014USD ($)	Sep. 30, 2017USD ($)Case	Dec. 31, 2016Case
Commitments And Contingencies Disclosure [Abstract]
Cumulative settlement payments for cases involving asbestos-related claims | $		$ 500,000	$ 1,200,000
Cumulative settlement payments made for cases involving asbestos-related claims with all legal fees other than corporate counsel expenses | $			1,100,000
Average cost per settled claim excluding legal fees | $	$ 27,000		$ 27,000
Number of claims pending | Case	223		223	229
Number of new cases filed | Case	39
Number of cases dismissed | Case	40
Number of cases settled | Case	5
Settlement recovering expense | $		$ 200,000
Assessment regarding Loss contingency impact Description	We are not aware of 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.

Business Segment Information -

Business Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017Segment
CECO Group, Inc. [Member]
Segment Reporting Information [Line Items]
Number of reportable segments	3

Business Segment Information 58

Business Segment Information - Net Sales and Income from Operation by Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Net sales	$ 84,987	$ 101,596	$ 271,508	$ 317,029
Income from operations	5,630	10,499	16,235	24,867
Environmental Segment [Member]
Segment Reporting Information [Line Items]
Net sales	29,735	36,606	103,543	119,939
Income from operations	2,157	5,459	12,043	16,324
Energy Segment [Member]
Segment Reporting Information [Line Items]
Net sales	36,182	50,259	114,681	151,058
Income from operations	5,287	8,502	14,428	20,065
Fluid Handling and Filtration Segment [Member]
Segment Reporting Information [Line Items]
Net sales	20,105	14,866	54,269	46,874
Income from operations	4,299	3,109	11,756	9,507
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net sales	(1,035)	(135)	(985)	(842)
Income from operations	(5,404)	(6,520)	(20,184)	(20,058)
Inter-segment Elimination [Member]
Segment Reporting Information [Line Items]
Income from operations	$ (709)	$ (51)	$ (1,808)	$ (971)

Business Segment Information 59

Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Property and equipment additions	$ 165	$ 1,348	$ 806	$ 5,196
Depreciation and amortization	3,937	4,689	12,105	15,017
Identifiable Assets	455,543		455,543		$ 498,634
Environmental Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions	68	225	110	529
Depreciation and amortization	813	994	2,500	2,868
Identifiable Assets	106,373		106,373		118,680
Energy Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions	69	4	419	232
Depreciation and amortization	1,927	2,341	5,957	8,082
Identifiable Assets	234,575		234,575		257,566
Fluid Handling and Filtration Segment [Member]
Segment Reporting Information [Line Items]
Property and equipment additions	17	1,118	236	4,428
Depreciation and amortization	1,168	1,321	3,563	3,969
Identifiable Assets	102,485		102,485		104,294
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Property and equipment additions	11	1	41	7
Depreciation and amortization	29	$ 33	85	$ 98
Identifiable Assets	$ 12,110		$ 12,110		$ 18,094

Business Segment Information 60

Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Segment Reporting Information [Line Items]
Non-cash additions for property, plant and equipment acquired under capital leases		$ 4,385
Fluid Handling and Filtration Segment [Member]
Segment Reporting Information [Line Items]
Non-cash additions for property, plant and equipment acquired under capital leases	$ 1,089	$ 4,385

Business Segment Information 61

Business Segment Information - Goodwill (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill
Goodwill	$ 171,239	$ 170,153	$ 220,163
Environmental Segment [Member]
Goodwill
Goodwill	48,203	48,203
Energy Segment [Member]
Goodwill
Goodwill	76,913	75,827
Fluid Handling and Filtration Segment [Member]
Goodwill
Goodwill	$ 46,123	$ 46,123

Business Segment Information 62

Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Net sales	$ 84,987	$ 101,596	$ 271,508	$ 317,029
Environmental Segment [Member]
Segment Reporting Information [Line Items]
Net sales	29,735	36,606	103,543	119,939
Energy Segment [Member]
Segment Reporting Information [Line Items]
Net sales	36,182	50,259	114,681	151,058
Fluid Handling and Filtration Segment [Member]
Segment Reporting Information [Line Items]
Net sales	20,105	14,866	54,269	46,874
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net sales	(1,035)	(135)	(985)	(842)
Intra - Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(2,068)	(2,128)	(10,062)	(6,726)
Intra - Segment Sales [Member] | Environmental Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(396)	(941)	(2,086)	(3,539)
Intra - Segment Sales [Member] | Energy Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(1,102)	(874)	(6,249)	(2,019)
Intra - Segment Sales [Member] | Fluid Handling and Filtration Segment [Member]
Segment Reporting Information [Line Items]
Net sales	(570)	(313)	(1,727)	(1,168)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	88,196	105,060	283,982	328,013
Operating Segments [Member] | Environmental Segment [Member]
Segment Reporting Information [Line Items]
Net sales	30,138	38,454	106,404	126,029
Operating Segments [Member] | Energy Segment [Member]
Segment Reporting Information [Line Items]
Net sales	37,290	51,155	120,958	153,476
Operating Segments [Member] | Fluid Handling and Filtration Segment [Member]
Segment Reporting Information [Line Items]
Net sales	20,768	15,451	56,620	48,508
Inter-segment Elimination [Member] | Environmental Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(61)	(110)	(505)	(681)
Inter-segment Elimination [Member] | Energy Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(39)	(1,062)	(877)	(2,529)
Inter-segment Elimination [Member] | Fluid Handling Filtration Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(6)	(29)	(45)	(206)
Inter-segment Elimination [Member] | Corporate And Other Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(1,035)	(135)	(985)	(842)
Inter-segment Elimination [Member] | Environmental Segment [Member] | Energy Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(1)	(878)	(730)	(2,345)
Inter-segment Elimination [Member] | Environmental Segment [Member] | Fluid Handling Filtration Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(6)	(29)	(45)	(206)
Inter-segment Elimination [Member] | Energy Segment [Member] | Environmental Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(6)	(22)	(28)	(399)
Inter-segment Elimination [Member] | Fluid Handling and Filtration Segment [Member] | Environmental Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(55)	(88)	(477)	(282)
Inter-segment Elimination [Member] | Fluid Handling and Filtration Segment [Member] | Energy Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(38)	(184)	(147)	(184)
Inter-segment Elimination [Member] | Corporate and Other [Member] | Corporate And Other Inter-Segment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	$ (1,035)	$ (135)	$ (985)	$ (842)