Document And Entity Information Note To Financial Statement Details Textual Significant Accounting Policies Note 3 - Property, Plant and Equipment Note 4 - Goodwill and Intangible Assets Note 5 - Long Term Debt and Revolving Lines of Credit Note 6 - Accrued Payroll and Payroll Expenses Note 7 - Accrued Expenses and Other Current Liabilities Note 8 - Stockholders' Equity Note 9 - Revenue Recognition Note 10 - Income Taxes Income Tax Disclosure [Text Block] Note 11 - Stock-Based Compensation Note 12 - Earnings Per Share Note 13 - Supplemental Cash Flow Information Note 14 - Fair Value Measurement Note 15 - Commitments and Contingencies us-gaap_LiabilitiesCurrent Total current liabilities Note 16 - Segment Reporting Schedule of Debt [Table Text Block] Note 3 - Property, Plant and Equipment - Components of Property, Plant and Equipment (Details) Note 3 - Property, Plant and Equipment - Depreciation Expense (Details) Note 4 - Goodwill and Intangible Assets - Intangible Assets (Details) Note 4 - Goodwill and Intangible Assets - Goodwill by Reportable Segment (Details) Note 5 - Long Term Debt and Revolving Lines of Credit - Long-term Debt (Details) Note 6 - Accrued Payroll and Payroll Expenses - Accrued Payroll and Expenses (Details) Note 7 - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details) Note 8 - Stockholders' Equity - Shares Repurchased (Details) Note 9 - Revenue Recognition - Summary of Revenues by Type (Details) Note 10 - Income Taxes - Summary of Income Before Income Taxes and Income Tax Expense (Details) Note 11 - Stock-Based Compensation - Compensation Expense (Details) Note 12 - Earnings Per Share - Calculation of Basic and Diluted EPS (Details) Note 13 - Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) Note 14 - Fair Value Measurement - Fair Value of Long-term Debt (Details) Note 15 - Commitments and Contingencies - Schedule of Self Insurance Information (Details) Note 16 - Segment Reporting - Operating Information (Details) us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent Foreign currency translation adjustment Notes To Financial Statements Expected recoveries related to self-insured commercial liabilities, non-current Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts classified as noncurrent. Notes To Financial Statements [Abstract] Expected recoveries related to self-insured commercial liabilities, current Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts classified as current. Accrued self-insured health liabilities Represents the amount of accrued health insurance liabilities. Accrued self-insured commercial liabilities Represents the amount of accrued commercial insurance liabilities. bbcp_SelfInsuranceLiabilityNetOfRecoveries Total self-insured commercial liability, net of expected recoveries Represents the amount of self insurance liability net of recoveries. Schedule of Self Insurance [Table Text Block] Tabular disclosure of the company's self insurance information. bbcp_LineOfCreditReserves Line of Credit, Reserves Amount of line of credit reserves. Goodwill and Intangible Assets Disclosure [Text Block] Accrued property, sales and use tax us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent Schedule of Goodwill [Table Text Block] Income taxes payable Accrued payroll and payroll expenses Total accrued payroll and payroll expenses Accrued interest us-gaap_InterestPayableCurrent us-gaap_AccountsPayableCurrent Accounts payable Other accrued us-gaap_OtherEmployeeRelatedLiabilitiesCurrent Accrued bonus us-gaap_AccruedBonusesCurrent Accrued employee-related taxes us-gaap_AccruedPayrollTaxesCurrent PP&E acquired but not yet paid Credit Facility [Axis] Proceeds from sale of property, plant and equipment Credit Facility [Domain] Other us-gaap_OtherAccruedLiabilitiesCurrent Accrued payroll us-gaap_AccruedSalariesCurrent us-gaap_PolicyTextBlockAbstract Accounting Policies Accrued vacation us-gaap_AccruedVacationCurrent Trade Names [Member] Accrued professional fees us-gaap_AccruedProfessionalFeesCurrent bbcp_TreasuryStockValueAcquiredCostMethodNet Treasury shares purchased Equity impact of the cost of common and preferred stock that were repurchased during the period net of issuances. Recorded using the cost method. Indefinite-Lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets, Major Class Name [Domain] us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchases of property, plant and equipment Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Noncompete Agreements [Member] Current liabilities: bbcp_StockRepurchaseProgramIncreaseInAuthorizedAmount Stock Repurchase Program, Increase In Authorized Amount Represents the amount of increase in stock repurchase plan authorized. bbcp_EBITDA Total segment adjusted EBITDA Represents the amount of earnings before interest, taxes, depreciation and amortization. Total assets (at quarter end) Total assets (at quarter end) Total assets Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Debt, fair value Loss available to common shareholders Net loss attributable to common stockholders (numerator for basic earnings per share) Customer Relationships [Member] Share-Based Payment Arrangement [Text Block] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet Debt Issuance Costs, Line of Credit Arrangements, Net Weighted average common shares outstanding (Note 12) Award Type [Domain] us-gaap_PreferredStockDividendsIncomeStatementImpact Less accretion of liquidation preference on preferred stock Effective Income Tax Rate Reconciliation [Table] Award Type [Axis] Net loss attributable to Concrete Pumping Holdings, Inc. Net loss Net loss us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization Accumulated amortization Net carrying amount Net carrying amount Intangible assets, net Standby Letters of Credit [Member] Restricted Stock Units (RSUs) [Member] Gross carrying value Restricted Stock [Member] Share-Based Payment Arrangement, Option [Member] us-gaap_GoodwillForeignCurrencyTranslationGainLoss Foreign currency translation Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Net carrying amount, indefinite Loss Contingencies [Table] Commitments and Contingencies Disclosure [Text Block] Property, plant and equipment, net Goodwill Balance Balance Long-Term Debt, Type [Axis] Long-Term Debt, Type [Domain] US Concrete Pumping [Member] Represents information related to US Concrete Pumping. Other operating activities Cash flows from investing activities: Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Long-Lived Tangible Asset, Depreciation [Table Text Block] Tabular disclosure for depreciation expense of the physical assets used in the normal conduct of business and not intended for resale. Net loss per common share (Note 12) Earnings Per Share [Text Block] Other operating liabilities Intersegment Eliminations [Member] Income tax benefit Accounts payable General and administrative expenses Cash and cash equivalents us-gaap_InterestExpenseNonoperating Interest expense and amortization of deferred financing costs Segment employee G&A expenses (2)(4) Segment employee G&A expenses (2)(4) Property and Equipment [Member] Represents property and equipment assets acquired. Compensation expense Stock-based compensation Stock-based compensation Amendment Flag us-gaap_ComprehensiveIncomeNetOfTax Total comprehensive income (loss) City Area Code Use of Estimates, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Shares repurchased (in shares) Treasury shares purchased (in shares) us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) Common stock, outstanding (in shares) us-gaap_IncreaseDecreaseInOtherOperatingAssets Other operating assets Current Fiscal Year End Date us-gaap_DebtInstrumentInterestRateStatedPercentage Debt Instrument, Interest Rate, Stated Percentage Document Fiscal Period Focus Document Fiscal Year Focus Document Period End Date Operating lease assets obtained in exchange for new operating lease liabilities Entity File Number Entity Emerging Growth Company us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Document Type Loss on extinguishment of debt Loss on extinguishment of debt us-gaap_NumberOfStatesInWhichEntityOperates Number of States in which Entity Operates Entity Small Business Entity Shell Company Document Information [Line Items] Document Information [Table] us-gaap_NumberOfStores Number of Stores Entity Filer Category Entity Current Reporting Status us-gaap_DividendsCommonStock Dividend bbcp_NonoperatingIncomeExpenseIncludingInterestExpenseAndGainLossOnExtinguishmentOfDebt Total other expense Amount of nonoperating income including interest expense and gain loss on debt extinguishment. Schedule of Long-Term Debt Instruments [Table] us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue Stock-based compensation expense us-gaap_IncreaseDecreaseInAccountsReceivable Receivables Statement of Comprehensive Income [Abstract] Entity Tax Identification Number Entity Central Index Key Entity Registrant Name Entity [Domain] Legal Entity [Axis] Entity Address, Address Line One Lease fixed revenue us-gaap_OperatingLeaseLeaseIncomeLeasePayments Amortization of intangible assets Amortization of Intangible Assets ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Total cost of shares repurchased Entity Address, City or Town ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Entity Address, Postal Zip Code Entity Address, State or Province ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Material Terms of Trading Arrangement [Text Block] us-gaap_TreasuryStockValue Treasury stock Camfaud [Member] Represents Camfaud Group Limited. Brundage-Bone [Member] Represents Brundage-Bone Concrete Pumping Holdings . Entity Common Stock, Shares Outstanding Trading Arrangements, by Individual [Table] Lease variable revenue us-gaap_OperatingLeaseVariableLeaseIncome Assembled Workforce [Member] The assembled workforce of the business. us-gaap_IncreaseDecreaseInInventories Inventory Trading Symbol Nature of Operation, Product Information, Concentration of Risk [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Eco-Pan [Member] Represents Eco-Pan, a segment of the company. The 2032 Notes [Member] Pertains to the debt. Local Phone Number us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity Line of Credit Facility, Remaining Borrowing Capacity us-gaap_GainLossOnDispositionOfAssets Net gain on the sale of property, plant and equipment us-gaap_TableTextBlock Notes Tables us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity S 2025 Q1 Dividends Member Pertains to dividends. Accrued equipment purchases bbcp_AccruedEquipmentPurchaseCurrent Carrying amount as of the balance sheet date of accrued equipment purchase, due within one year or within the normal operating cycle if longer. Shares issued under stock-based program (in shares) Shares issued under stock-based program (in shares) Shares issued under stock-based program Accrued Liabilities and Other Liabilities [Member] Primary financial statement caption encompassin accrued liabilities and other liabilities. Total self-insured commercial liabilities bbcp_SelfinsuranceAccruedExpensesForClaimsIncurredButNotReportedAndEstimatedLossesReported The amount of accrued expenses for claims incurred but not reported and estimated losses reported. Other segment items (5) Other segment items (5) us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and stockholders' equity bbcp_SelfinsuranceAccruedExpensesForHealthClaimsIncurredButNotReoprted Self-insurance, Accrued Expenses for Health Claims Incurred But Not Reoprted The amount of accrued expenses for health claims incurred but not reported. Reported Value Measurement [Member] Accumulated deficit Accumulated other comprehensive income Asset Backed Revolving Credit Facility [Member] Related to the asset backed revolving credit facility. Federal Income Tax Note [Table] Debt Disclosure [Text Block] Net changes in operating assets and liabilities: Amortization of deferred financing costs us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements Operating lease obligations, non-current Accrued Payroll and Payroll Expenses [Text Block] The entire disclosure for accrued payroll and payroll expenses. us-gaap_DeferredIncomeTaxesAndTaxCredits Deferred income taxes Cash and cash equivalents: Operating lease obligations, current portion Total intangibles us-gaap_IntangibleAssetsGrossExcludingGoodwill Schedule of Accrued Payroll and Expenses [Table Text Block] Tabular disclosure of the components of accrued payroll and expenses. Right-of-use operating lease assets Trade Names, Indefinite-lived [Member] Rights acquired through registration of a business name to gain or protect exclusive use thereof. us-gaap_ShareBasedCompensation Stock-based compensation expense Other non-current assets Weighted average remaining life (Year) Segment Revenue: (1) Revenues Total revenue Foreign currency translation adjustment Foreign currency translation adjustment Intangible Asset, Finite-Lived [Table] bbcp_LineOfCreditFacilityAdditionalBorrowingCapacityAccordionFeature Line of Credit Facility, Additional Borrowing Capacity, Accordion Feature In reference to the additional borrowing capacity that is related to an accordion feature. Schedule of Finite-Lived Intangible Assets [Table Text Block] Depreciation Expense Depreciation Depreciation and amortization (6) Depreciation and amortization (6) us-gaap_AssetsCurrent Total current assets Equity [Text Block] Fair Value Measurement Inputs and Valuation Techniques [Table] Common stock, $0.0001 par value, 500,000,000 shares authorized, 50,779,137 and 51,272,503 issued and outstanding as of January 31, 2026 and October 31, 2025, respectively Adjustments to reconcile net loss to net cash provided by operating activities: Common stock, authorized (in shares) Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Common stock, issued (in shares) Common stock, par value (in dollars per share) Cash payments related to operating lease liabilities Share Repurchase Program [Member] In relation to a share repurchase program. Stock-based Program [Member] In relation to a stock-based program. Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Cash paid for interest Cash Flow, Supplemental Disclosures [Text Block] Prepaid expenses and other current assets Property, Plant and Equipment Disclosure [Text Block] Property, Plant and Equipment [Table Text Block] Inventory Portion at Fair Value Measurement [Member] Estimate of Fair Value Measurement [Member] Measurement Basis [Axis] us-gaap_ForeignCurrencyTransactionGainLossBeforeTax Foreign currency adjustments us-gaap_ProceedsFromIncomeTaxRefunds Cash refunded for income taxes Reconciliation of Revenue from Segments to Consolidated [Table] bbcp_ImpairmentOfIntangibleAssetsAccumulatedImpairment Impairments The amount of accumulated impairment loss as of the balance sheet date resulting from the write-down of the carrying amount of an intangible asset. Reconciliation of segment adjusted EBITDA to income before taxes: Gross carrying value, indefinite Amount before impairment charges of all intangible assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Statement [Line Items] Allowance for doubtul accounts Furniture and Fixtures [Member] Receivables, net of allowance for doubtful accounts of $831 and $905, respectively us-gaap_NumberOfReportableSegments Number of Reportable Segments Additional paid-in capital Land, Buildings and Improvements [Member] AOCI Attributable to Parent [Member] Stockholders' equity Property, Plant and Equipment [Table] Other income, net Other income, net Long-Lived Tangible Asset [Axis] Segment Reporting Disclosure [Text Block] Long-Lived Tangible Asset [Domain] Current assets: Preferred stock, issued (in shares) Preferred stock, outstanding (in shares) us-gaap_EstimatedInsuranceRecoveries Total expected recoveries related to self-insured commercial liabilities Zero-dividend convertible perpetual preferred stock, $0.0001 par value, 2,450,980 shares issued and outstanding as of January 31, 2026 and October 31, 2025 us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Beginning of period End of period Preferred stock, par value (in dollars per share) Effect of foreign currency exchange rate changes on cash us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net increase in cash and cash equivalents us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided by (used in) financing activities us-gaap_Liabilities Total liabilities Commitments and contingencies (Note 15) Interest income us-gaap_OperatingIncomeLoss Income from operations us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash provided by operating activities Other income (expense): us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities Cost of operations us-gaap_GrossProfit Gross profit Consolidation Items [Domain] Deferred income taxes Consolidation Items [Axis] Other financing activities Repairs & maintenance (2) Repairs & maintenance (2) Segment employee cost of operation expenses (2)(3) us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation Payment, Tax Withholding, Share-Based Payment Arrangement Fuel (2) Fuel (2) us-gaap_LettersOfCreditOutstandingAmount Letters of Credit Outstanding, Amount Segment expenses: us-gaap_PaymentsForRepurchaseOfCommonStock Purchase of treasury stock Retained Earnings [Member] Service revenue us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax Average price per share (in dollars per share) Treasury Stock, Common [Member] Additional Paid-in Capital [Member] Class of Treasury Stock [Table Text Block] Equity Components [Axis] Class of Treasury Stock [Table] Equity Component [Domain] us-gaap_LongTermDebt Long term debt, net of unamortized deferred financing costs Stock, Class of Stock [Table] Prepaid Expenses and Other Current Assets [Member] Other Noncurrent Assets [Member] Other Noncurrent Liabilities [Member] Loss before income taxes Loss before income taxes bbcp_PolicyTable Other comprehensive income: us-gaap_LineOfCredit Long-Term Line of Credit us-gaap_PaymentsOfDebtIssuanceCosts Payment of debt issuance costs Deferred financing costs us-gaap_DeferredFinanceCostsNet Less: Unamortized deferred financing costs offsetting long term debt Disaggregation of Revenue [Table Text Block] US Concrete Waste Management Services [Member] Represents information related to US Concrete Waste Management Services. UK Operations [Member] Represents information related to UK operations. Revenue from Contract with Customer [Text Block] Transportation Equipment [Member] Machinery and Equipment [Member] Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Domain] Document Quarterly Report Entity Incorporation, State or Country Code us-gaap_DebtInstrumentCarryingAmount Total debt, gross General and Administrative Expense [Member] Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Document Transition Report Basis of Accounting, Policy [Policy Text Block] us-gaap_RepaymentsOfSeniorDebt Payments on long term debt Summary of Income Before Income Taxes and Income Tax Expense [Table Text Block] Tabula disclosure for income before taxes and income tax expense. us-gaap_RepaymentsOfLongTermLinesOfCredit Payments on revolving loan Entity Interactive Data Current us-gaap_CommonStockDividendsPerShareDeclared Common Stock, Dividends, Per Share, Declared (in dollars per share) Security Exchange Name Title of 12(b) Security Proceeds on long term debt Cost of Sales [Member] Proceeds on revolving loan Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Domain] Capital expenditures Capital expenditures Accrued expenses and other current liabilities Total accrued expenses and other current liabilities Segments [Axis] Segments [Domain] us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) Diluted (in shares) Weighted average shares - diluted (in shares) Accrued Expenses and Other Current Liabilities [Table] Disclosure of accrued expenses and other current liabilities. Accrued Payroll and Payroll Expenses [Table] Disclosure of accrued payroll and payroll expenses. Common Stock Outstanding [Member] Represents common stock outstanding. Statement [Table] Statement of Financial Position [Abstract] Diluted (in dollars per share) Diluted earnings per share (in dollars per share) Basic (in shares) Weighted average shares - basic (in shares) us-gaap_EffectiveIncomeTaxRateContinuingOperations Effective Income Tax Rate Reconciliation, Percent Basic (in dollars per share) Basic earnings per share (in dollars per share) Statement of Cash Flows [Abstract] SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table] Statement of Stockholders' Equity [Abstract] Income Statement [Abstract] Schedule of Accrued Liabilities [Table Text Block] Accounting Standards Update and Change in Accounting Principle [Table] srt_StockRepurchaseProgramAuthorizedAmount1 Stock Repurchase Program, Authorized Amount Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block] Restricted Stock and Stock Options [Member] Represents restricted stock and stock options. Share Repurchase Program [Domain] Share Repurchase Program [Axis] us-gaap_DividendPayableDateToBePaidDayMonthAndYear Dividends Payable, Date to be Paid Cash flows from financing activities: Other non-current liabilities us-gaap_DividendsPayableDateDeclaredDayMonthAndYear Dividends Payable, Date Declared us-gaap_DividendsPayableDateOfRecordDayMonthAndYear Dividends Payable, Date of Record us-gaap_DividendsPayableCurrentAndNoncurrent Dividends Payable Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Dividends [Axis] Dividends [Domain] us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax Foreign currency translation adjustment Unallocated corporate expenses Amount of unallocated corporate expenses. bbcp_OtherAdjustments Other adjustments Other adjustments Amount of other adjustments. Series A Preferred Stock [Member] Interest expense and amortization of deferred financing costs, net of interest income Interest expense and amortization of deferred financing costs, net of interest income Amount of interest expense and amortization of deferred financing costs, net of interest income. us-gaap_StockholdersEquity Total stockholders' equity Balance Balance Non-cash operating lease expense us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization Property, plant and equipment, net us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization Accumulated depreciation Class of Stock [Axis] Property, plant and equipment, gross Long term debt, net of discount for deferred financing costs Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Operating Segments [Member]