3.26.1 html 264 361 1 true 67 0 false 6 false false R1.htm 75000 - Document - Document and Entity Information Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 75010 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheets Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 75020 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_StatementCondensedConsolidatedBalanceSheetsParenthetical Condensed Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 75030 - Statement - Condensed Consolidated Statements Of Operations (Unaudited) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/StatementCondensedConsolidatedStatementsOfOperationsUnaudited Condensed Consolidated Statements Of Operations (Unaudited) Statements 4 false false R5.htm 75040 - Statement - Condensed Consolidated Statements Of Comprehensive (Loss) Income (Unaudited) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/StatementCondensedConsolidatedStatementsOfComprehensiveLossIncomeUnaudited Condensed Consolidated Statements Of Comprehensive (Loss) Income (Unaudited) Statements 5 false false R6.htm 75050 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfShareholdersEquityUnaudited Condensed Consolidated Statements of Shareholders' Equity (Unaudited) Statements 6 false false R7.htm 75060 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_StatementCondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 7 false false R8.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 8 false false R9.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 9 false false R10.htm 995455 - Disclosure - Basis of Reporting for Consolidated Financial Statements Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureBasisOfReportingForConsolidatedFinancialStatements Basis of Reporting for Consolidated Financial Statements Notes 10 false false R11.htm 995465 - Disclosure - Recent Financial Accounting Pronouncements Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureRecentFinancialAccountingPronouncements Recent Financial Accounting Pronouncements Notes 11 false false R12.htm 995475 - Disclosure - Accounts Receivable Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureAccountsReceivable Accounts Receivable Notes 12 false false R13.htm 995485 - Disclosure - Contract Assets and Liabilities Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureContractAssetsAndLiabilities Contract Assets and Liabilities Notes 13 false false R14.htm 995495 - Disclosure - Inventories Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureInventories Inventories Notes 14 false false R15.htm 995505 - Disclosure - Goodwill and Intangible Assets Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureGoodwillAndIntangibleAssets Goodwill and Intangible Assets Notes 15 false false R16.htm 995515 - Disclosure - Accrued Expenses Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAccruedExpenses Accrued Expenses Notes 16 false false R17.htm 995525 - Disclosure - Senior Debt Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureSeniorDebt Senior Debt Notes 17 false false R18.htm 995535 - Disclosure - (Loss) Earnings per Share Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureLossEarningsPerShare (Loss) Earnings per Share Notes 18 false false R19.htm 995545 - Disclosure - Share-Based Compensation Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureShareBasedCompensation Share-Based Compensation Notes 19 false false R20.htm 995565 - Disclosure - Income Taxes Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 20 false false R21.htm 995575 - Disclosure - Financial Instruments Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureFinancialInstruments Financial Instruments Notes 21 false false R22.htm 995585 - Disclosure - Commitments and Contingencies Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureCommitmentsAndContingencies1 Commitments and Contingencies Notes 22 false false R23.htm 995595 - Disclosure - Acquisitions Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitions8 Acquisitions Notes 23 false false R24.htm 995605 - Disclosure - Divestiture Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureDivestiture Divestiture Notes 24 false false R25.htm 995615 - Disclosure - Business Segment Information Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureBusinessSegmentInformation Business Segment Information Notes 25 false false R26.htm 995625 - Disclosure - Recent Financial Accounting Pronouncements (Policies) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureRecentFinancialAccountingPronouncementsPolicies Recent Financial Accounting Pronouncements (Policies) Policies http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureRecentFinancialAccountingPronouncements 26 false false R27.htm 995635 - Disclosure - Accounts Receivable (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureAccountsReceivableTables Accounts Receivable (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureAccountsReceivable 27 false false R28.htm 995645 - Disclosure - Contract Assets and Liabilities (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureContractAssetsAndLiabilitiesTables Contract Assets and Liabilities (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureContractAssetsAndLiabilities 28 false false R29.htm 995655 - Disclosure - Inventories (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureInventoriesTables Inventories (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureInventories 29 false false R30.htm 995665 - Disclosure - Goodwill and Intangible Assets (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureGoodwillAndIntangibleAssetsTables Goodwill and Intangible Assets (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureGoodwillAndIntangibleAssets 30 false false R31.htm 995675 - Disclosure - Accrued Expenses (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAccruedExpensesTables Accrued Expenses (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAccruedExpenses 31 false false R32.htm 995685 - Disclosure - Senior Debt (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureSeniorDebtTables Senior Debt (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureSeniorDebt 32 false false R33.htm 995695 - Disclosure - (Loss) Earnings per Share (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureLossEarningsPerShareTables (Loss) Earnings per Share (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureLossEarningsPerShare 33 false false R34.htm 995715 - Disclosure - Acquisitions (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitionsTables Acquisitions (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitions8 34 false false R35.htm 995725 - Disclosure - Divestiture (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureDivestitureTables Divestiture (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureDivestiture 35 false false R36.htm 995735 - Disclosure - Business Segment Information (Tables) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureBusinessSegmentInformationTables Business Segment Information (Tables) Tables http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureBusinessSegmentInformation 36 false false R37.htm 995745 - Disclosure - Accounts Receivable - Summary of Accounts Receivable (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureAccountsReceivableSummaryOfAccountsReceivableDetail Accounts Receivable - Summary of Accounts Receivable (Detail) Details 37 false false R38.htm 995755 - Disclosure - Accounts Receivable - Provision for Credit Losses Activity (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAccountsReceivableProvisionForCreditLossesActivityDetails Accounts Receivable - Provision for Credit Losses Activity (Details) Details 38 false false R39.htm 995765 - Disclosure - Accounts Receivable - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureAccountsReceivableAdditionalInformationDetail Accounts Receivable - Additional Information (Detail) Details 39 false false R40.htm 995775 - Disclosure - Contract Assets and Liabilities - Summary of Contract Assets and Liabilities (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureContractAssetsAndLiabilitiesSummaryOfContractAssetsAndLiabilitiesDetails Contract Assets and Liabilities - Summary of Contract Assets and Liabilities (Details) Details 40 false false R41.htm 995785 - Disclosure - Contract Assets and Liabilities (Additional Information) (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureContractAssetsAndLiabilitiesAdditionalInformationDetails Contract Assets and Liabilities (Additional Information) (Details) Details http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureContractAssetsAndLiabilitiesTables 41 false false R42.htm 995795 - Disclosure - Inventories - Summary of Inventories (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureInventoriesSummaryOfInventoriesDetail Inventories - Summary of Inventories (Detail) Details 42 false false R43.htm 995805 - Disclosure - Inventories - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureInventoriesAdditionalInformationDetail Inventories - Additional Information (Detail) Details 43 false false R44.htm 995815 - Disclosure - Goodwill and Intangible Assets - Goodwill / Tradename (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureGoodwillAndIntangibleAssetsGoodwillTradenameDetail Goodwill and Intangible Assets - Goodwill / Tradename (Detail) Details 44 false false R45.htm 995825 - Disclosure - Goodwill and Intangible Assets - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureGoodwillAndIntangibleAssetsAdditionalInformationDetail Goodwill and Intangible Assets - Additional Information (Detail) Details 45 false false R46.htm 995835 - Disclosure - Goodwill and Intangible Assets - Intangible Assets - Finite Life (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureGoodwillAndIntangibleAssetsIntangibleAssetsFiniteLifeDetail Goodwill and Intangible Assets - Intangible Assets - Finite Life (Detail) Details 46 false false R47.htm 995845 - Disclosure - Goodwill and Intangible Assets - Finite Lived Intangible Assets Amortization Expense (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureGoodwillAndIntangibleAssetsFiniteLivedIntangibleAssetsAmortizationExpenseDetail Goodwill and Intangible Assets - Finite Lived Intangible Assets Amortization Expense (Detail) Details 47 false false R48.htm 995855 - Disclosure - Accrued Expenses - Summary of Accrued Expenses (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAccruedExpensesSummaryOfAccruedExpensesDetail Accrued Expenses - Summary of Accrued Expenses (Detail) Details 48 false false R49.htm 995875 - Disclosure - Senior Debt - Summary of Debt (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureSeniorDebtSummaryOfDebtDetail Senior Debt - Summary of Debt (Detail) Details 49 false false R50.htm 995905 - Disclosure - Senior Debt - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureSeniorDebtAdditionalInformationDetail Senior Debt - Additional Information (Detail) Details 50 false false R51.htm 995915 - Disclosure - (Loss) Earnings per Share - Number of Shares Outstanding for Calculation of Earnings Per Share (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureLossEarningsPerShareNumberOfSharesOutstandingForCalculationOfEarningsPerShareDetail (Loss) Earnings per Share - Number of Shares Outstanding for Calculation of Earnings Per Share (Detail) Details 51 false false R52.htm 995935 - Disclosure - (Loss) Earnings per Share - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureLossEarningsPerShareAdditionalInformationDetail (Loss) Earnings per Share - Additional Information (Detail) Details 52 false false R53.htm 995945 - Disclosure - Share-Based Compensation - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureShareBasedCompensationAdditionalInformationDetail Share-Based Compensation - Additional Information (Detail) Details 53 false false R54.htm 995975 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 54 false false R55.htm 995985 - Disclosure - Financial Instruments - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureFinancialInstrumentsAdditionalInformationDetail Financial Instruments - Additional Information (Detail) Details 55 false false R56.htm 995995 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetail Commitments and Contingencies - Additional Information (Detail) Details 56 false false R57.htm 996005 - Disclosure - Acquisitions - Additional Information (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitionsAdditionalInformationDetail Acquisitions - Additional Information (Detail) Details 57 false false R58.htm 996015 - Disclosure - Acquisitions - Summary of Fair Value of Consideration Transferred for the Merger (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitionsSummaryOfFairValueOfConsiderationTransferredForTheMergerDetails Acquisitions - Summary of Fair Value of Consideration Transferred for the Merger (Details) Details 58 false false R59.htm 996025 - Disclosure - Acquisitions - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitionsScheduleOfEstimatedFairValuesOfAssetsAcquiredAndLiabilitiesAssumedDetail Acquisitions - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) Details 59 false false R60.htm 996055 - Disclosure - Acquisitions - Schedule of Estimated Fair Values of Assets Acquired Intangible Assets (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitionsScheduleOfEstimatedFairValuesOfAssetsAcquiredIntangibleAssetsDetails Acquisitions - Schedule of Estimated Fair Values of Assets Acquired Intangible Assets (Details) Details 60 false false R61.htm 996065 - Disclosure - Acquisitions - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitionsScheduleOfEstimatedFairValuesOfAssetsAcquiredAndLiabilitiesAssumedParentheticalDetail Acquisitions - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) Details 61 false false R62.htm 996075 - Disclosure - Acquisitions - Schedule of Unaudited Pro Forma Financial Information (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureAcquisitionsScheduleOfUnauditedProFormaFinancialInformationDetails Acquisitions - Schedule of Unaudited Pro Forma Financial Information (Details) Details 62 false false R63.htm 996085 - Disclosure - Divestiture (Additional Information) (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureDivestitureAdditionalInformationDetails Divestiture (Additional Information) (Details) Details http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureDivestitureTables 63 false false R64.htm 996095 - Disclosure - Divestiture - Schedule of Amounts Related to the Transaction (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureDivestitureScheduleOfAmountsRelatedToTheTransactionDetails Divestiture - Schedule of Amounts Related to the Transaction (Details) Details 64 false false R65.htm 996105 - Disclosure - Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureBusinessSegmentInformationPropertyAndEquipmentAdditionsDepreciationAndAmortizationAndIdentifiableAssetsDetail Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) Details 65 false false R66.htm 996125 - Disclosure - Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureBusinessSegmentInformationIntraSegmentAndInterSegmentRevenuesDetail Business Segment Information - Intra-Segment and Inter-Segment Revenues (Detail) Details 66 false false R67.htm 996135 - Disclosure - Business Segment Information - Net sales by geographic area (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureBusinessSegmentInformationNetSalesByGeographicAreaDetails Business Segment Information - Net sales by geographic area (Details) Details 67 false false R68.htm 996145 - Disclosure - Business Segment Information - Long-lived assets by geographic area (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureBusinessSegmentInformationLonglivedAssetsByGeographicAreaDetails Business Segment Information - Long-lived assets by geographic area (Details) Details 68 false false R69.htm 996155 - Disclosure - Business Segment Information (Additional Information) (Details) Sheet http://www.cecoenviro.com/20260630/taxonomy/role/DisclosureBusinessSegmentInformationAdditionalInformationDetails Business Segment Information (Additional Information) (Details) Details http://www.cecoenviro.com/20260630/taxonomy/role/Role_DisclosureBusinessSegmentInformationTables 69 false false All Reports Book All Reports ceco-20260630.htm ceco-20260630.xsd img19944823_0.jpg http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 false false