3.20.1 html 271 409 1 true 90 0 false 4 false false R1.htm 000 - Document - Document And Entity Information Sheet http://www.concretepumpingholdings.com/20200131/role/statement-document-and-entity-information Document And Entity Information Cover 1 false false R2.htm 001 - Statement - Consolidated Balance Sheets (Current Period Unaudited) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-consolidated-balance-sheets-current-period-unaudited- Consolidated Balance Sheets (Current Period Unaudited) Statements 2 false false R3.htm 002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-consolidated-balance-sheets-current-period-unaudited-parentheticals Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Statements 3 false false R4.htm 003 - Statement - Consolidated Statements of Operations (Unaudited) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-consolidated-statements-of-operations-unaudited Consolidated Statements of Operations (Unaudited) Statements 4 false false R5.htm 004 - Statement - Consolidated Statements of Comprehensive Income (Loss) (Unaudited) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-consolidated-statements-of-comprehensive-income-loss-unaudited Consolidated Statements of Comprehensive Income (Loss) (Unaudited) Statements 5 false false R6.htm 005 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-consolidated-statements-of-changes-in-stockholders-equity-unaudited Consolidated Statements of Changes in Stockholders' Equity (Unaudited) Statements 6 false false R7.htm 006 - Statement - Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-consolidated-statements-of-cash-flows-unaudited Consolidated Statements of Cash Flows (Unaudited) Statements 7 false false R8.htm 007 - Disclosure - Note 1 - Organization and Description of Business Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-1-organization-and-description-of-business Note 1 - Organization and Description of Business Notes 8 false false R9.htm 008 - Disclosure - Note 2 - Summary of Significant Accounting Policies Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-2-summary-of-significant-accounting-policies Note 2 - Summary of Significant Accounting Policies Notes 9 false false R10.htm 009 - Disclosure - Note 3 - New Accounting Pronouncements Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-3-new-accounting-pronouncements Note 3 - New Accounting Pronouncements Notes 10 false false R11.htm 010 - Disclosure - Note 4 - Business Combinations Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-4-business-combinations Note 4 - Business Combinations Notes 11 false false R12.htm 011 - Disclosure - Note 5 - Fair Value Measurement Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-5-fair-value-measurement Note 5 - Fair Value Measurement Notes 12 false false R13.htm 012 - Disclosure - Note 6 - Prepaid Expenses and Other Current Assets Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-6-prepaid-expenses-and-other-current-assets Note 6 - Prepaid Expenses and Other Current Assets Notes 13 false false R14.htm 013 - Disclosure - Note 7 - Property, Plant and Equipment Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-7-property-plant-and-equipment Note 7 - Property, Plant and Equipment Notes 14 false false R15.htm 014 - Disclosure - Note 8 - Goodwill and Intangible Assets Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets Note 8 - Goodwill and Intangible Assets Notes 15 false false R16.htm 015 - Disclosure - Note 9 - Long Term Debt and Revolving Lines of Credit Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-9-long-term-debt-and-revolving-lines-of-credit Note 9 - Long Term Debt and Revolving Lines of Credit Notes 16 false false R17.htm 016 - Disclosure - Note 10 - Accrued Payroll and Payroll Expenses Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-10-accrued-payroll-and-payroll-expenses Note 10 - Accrued Payroll and Payroll Expenses Notes 17 false false R18.htm 017 - Disclosure - Note 11 - Accrued Expenses and Other Current Liabilities Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-11-accrued-expenses-and-other-current-liabilities Note 11 - Accrued Expenses and Other Current Liabilities Notes 18 false false R19.htm 018 - Disclosure - Note 12 - Income Taxes Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-12-income-taxes Note 12 - Income Taxes Notes 19 false false R20.htm 019 - Disclosure - Note 13 - Commitments and Contingencies Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-13-commitments-and-contingencies Note 13 - Commitments and Contingencies Notes 20 false false R21.htm 020 - Disclosure - Note 14 - Stockholders' Equity Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-14-stockholders-equity Note 14 - Stockholders' Equity Notes 21 false false R22.htm 021 - Disclosure - Note 15 - Stock-based Compensation Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-15-stockbased-compensation Note 15 - Stock-based Compensation Notes 22 false false R23.htm 022 - Disclosure - Note 16 - Earnings Per Share Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-16-earnings-per-share Note 16 - Earnings Per Share Notes 23 false false R24.htm 023 - Disclosure - Note 17 - Segment Reporting Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-17-segment-reporting Note 17 - Segment Reporting Notes 24 false false R25.htm 024 - Disclosure - Note 18 - Related Party Transaction Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-18-related-party-transaction Note 18 - Related Party Transaction Notes 25 false false R26.htm 025 - Disclosure - Significant Accounting Policies (Policies) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-significant-accounting-policies-policies Significant Accounting Policies (Policies) Policies http://www.concretepumpingholdings.com/20200131/role/statement-note-2-summary-of-significant-accounting-policies 26 false false R27.htm 026 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-2-summary-of-significant-accounting-policies-tables Note 2 - Summary of Significant Accounting Policies (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-2-summary-of-significant-accounting-policies 27 false false R28.htm 027 - Disclosure - Note 4 - Business Combinations (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-4-business-combinations-tables Note 4 - Business Combinations (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-4-business-combinations 28 false false R29.htm 028 - Disclosure - Note 5 - Fair Value Measurement (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-5-fair-value-measurement-tables Note 5 - Fair Value Measurement (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-5-fair-value-measurement 29 false false R30.htm 029 - Disclosure - Note 6 - Prepaid Expenses and Other Current Assets (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-6-prepaid-expenses-and-other-current-assets-tables Note 6 - Prepaid Expenses and Other Current Assets (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-6-prepaid-expenses-and-other-current-assets 30 false false R31.htm 030 - Disclosure - Note 7 - Property, Plant and Equipment (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-7-property-plant-and-equipment-tables Note 7 - Property, Plant and Equipment (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-7-property-plant-and-equipment 31 false false R32.htm 031 - Disclosure - Note 8 - Goodwill and Intangible Assets (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets-tables Note 8 - Goodwill and Intangible Assets (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets 32 false false R33.htm 032 - Disclosure - Note 9 - Long Term Debt and Revolving Lines of Credit (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-9-long-term-debt-and-revolving-lines-of-credit-tables Note 9 - Long Term Debt and Revolving Lines of Credit (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-9-long-term-debt-and-revolving-lines-of-credit 33 false false R34.htm 033 - Disclosure - Note 10 - Accrued Payroll and Payroll Expenses (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-10-accrued-payroll-and-payroll-expenses-tables Note 10 - Accrued Payroll and Payroll Expenses (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-10-accrued-payroll-and-payroll-expenses 34 false false R35.htm 034 - Disclosure - Note 11 - Accrued Expenses and Other Current Liabilities (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-11-accrued-expenses-and-other-current-liabilities-tables Note 11 - Accrued Expenses and Other Current Liabilities (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-11-accrued-expenses-and-other-current-liabilities 35 false false R36.htm 035 - Disclosure - Note 13 - Commitments and Contingencies (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-13-commitments-and-contingencies-tables Note 13 - Commitments and Contingencies (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-13-commitments-and-contingencies 36 false false R37.htm 036 - Disclosure - Note 15 - Stock-based Compensation (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-15-stockbased-compensation-tables Note 15 - Stock-based Compensation (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-15-stockbased-compensation 37 false false R38.htm 037 - Disclosure - Note 16 - Earnings Per Share (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-16-earnings-per-share-tables Note 16 - Earnings Per Share (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-16-earnings-per-share 38 false false R39.htm 038 - Disclosure - Note 17 - Segment Reporting (Tables) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-17-segment-reporting-tables Note 17 - Segment Reporting (Tables) Tables http://www.concretepumpingholdings.com/20200131/role/statement-note-17-segment-reporting 39 false false R40.htm 039 - Disclosure - Note 1 - Organization and Description of Business (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-1-organization-and-description-of-business-details-textual Note 1 - Organization and Description of Business (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-1-organization-and-description-of-business 40 false false R41.htm 040 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-2-summary-of-significant-accounting-policies-details-textual Note 2 - Summary of Significant Accounting Policies (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-2-summary-of-significant-accounting-policies-tables 41 false false R42.htm 041 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-2-summary-of-significant-accounting-policies-property-plant-and-equipment-details Note 2 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) Details 42 false false R43.htm 042 - Disclosure - Note 4 - Business Combinations (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-4-business-combinations-details-textual Note 4 - Business Combinations (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-4-business-combinations-tables 43 false false R44.htm 043 - Disclosure - Note 4 - Business Combinations - Preliminary Allocation of Consideration to the Assets Acquired and Liabilities Assumed (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-4-business-combinations-preliminary-allocation-of-consideration-to-the-assets-acquired-and-liabilities-assumed-details Note 4 - Business Combinations - Preliminary Allocation of Consideration to the Assets Acquired and Liabilities Assumed (Details) Details 44 false false R45.htm 044 - Disclosure - Note 4 - Business Combinations - Pro Forma Financial Information (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-4-business-combinations-pro-forma-financial-information-details Note 4 - Business Combinations - Pro Forma Financial Information (Details) Details 45 false false R46.htm 045 - Disclosure - Note 5 - Fair Value Measurement (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-5-fair-value-measurement-details-textual Note 5 - Fair Value Measurement (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-5-fair-value-measurement-tables 46 false false R47.htm 046 - Disclosure - Note 5 - Fair Value Measurement - Fair Value of Long-term Debt (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-5-fair-value-measurement-fair-value-of-longterm-debt-details Note 5 - Fair Value Measurement - Fair Value of Long-term Debt (Details) Details 47 false false R48.htm 047 - Disclosure - Note 6 - Prepaid Expenses and Other Current Assets - Prepaid Expenses and Other Current Assets (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-6-prepaid-expenses-and-other-current-assets-prepaid-expenses-and-other-current-assets-details Note 6 - Prepaid Expenses and Other Current Assets - Prepaid Expenses and Other Current Assets (Details) Details 48 false false R49.htm 048 - Disclosure - Note 7 - Property, Plant and Equipment (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-7-property-plant-and-equipment-details-textual Note 7 - Property, Plant and Equipment (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-7-property-plant-and-equipment-tables 49 false false R50.htm 049 - Disclosure - Note 7 - Property, Plant and Equipment - Components of Property, Plant and Equipment (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-7-property-plant-and-equipment-components-of-property-plant-and-equipment-details Note 7 - Property, Plant and Equipment - Components of Property, Plant and Equipment (Details) Details 50 false false R51.htm 050 - Disclosure - Note 8 - Goodwill and Intangible Assets (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets-details-textual Note 8 - Goodwill and Intangible Assets (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets-tables 51 false false R52.htm 051 - Disclosure - Note 8 - Goodwill and Intangible Assets - Intangible Assets (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets-intangible-assets-details Note 8 - Goodwill and Intangible Assets - Intangible Assets (Details) Details 52 false false R53.htm 052 - Disclosure - Note 8 - Goodwill and Intangible Assets - Intangible Assets Amortization Expense (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets-intangible-assets-amortization-expense-details Note 8 - Goodwill and Intangible Assets - Intangible Assets Amortization Expense (Details) Details 53 false false R54.htm 053 - Disclosure - Note 8 - Goodwill and Intangible Assets - Goodwill by Reportable Segment (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-8-goodwill-and-intangible-assets-goodwill-by-reportable-segment-details Note 8 - Goodwill and Intangible Assets - Goodwill by Reportable Segment (Details) Details 54 false false R55.htm 054 - Disclosure - Note 9 - Long Term Debt and Revolving Lines of Credit (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-9-long-term-debt-and-revolving-lines-of-credit-details-textual Note 9 - Long Term Debt and Revolving Lines of Credit (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-9-long-term-debt-and-revolving-lines-of-credit-tables 55 false false R56.htm 055 - Disclosure - Note 9 - Long Term Debt and Revolving Lines of Credit - Future Amortization Expense (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-9-long-term-debt-and-revolving-lines-of-credit-future-amortization-expense-details Note 9 - Long Term Debt and Revolving Lines of Credit - Future Amortization Expense (Details) Details 56 false false R57.htm 056 - Disclosure - Note 9 - Long Term Debt and Revolving Lines of Credit - Long-term Debt (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-9-long-term-debt-and-revolving-lines-of-credit-longterm-debt-details Note 9 - Long Term Debt and Revolving Lines of Credit - Long-term Debt (Details) Details 57 false false R58.htm 057 - Disclosure - Note 10 - Accrued Payroll and Payroll Expenses - Accrued Payroll and Expenses (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-10-accrued-payroll-and-payroll-expenses-accrued-payroll-and-expenses-details Note 10 - Accrued Payroll and Payroll Expenses - Accrued Payroll and Expenses (Details) Details 58 false false R59.htm 058 - Disclosure - Note 11 - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-11-accrued-expenses-and-other-current-liabilities-accrued-expenses-and-other-current-liabilities-details Note 11 - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details) Details 59 false false R60.htm 059 - Disclosure - Note 12 - Income Taxes (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-12-income-taxes-details-textual Note 12 - Income Taxes (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-12-income-taxes 60 false false R61.htm 060 - Disclosure - Note 13 - Commitments and Contingencies (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-13-commitments-and-contingencies-details-textual Note 13 - Commitments and Contingencies (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-13-commitments-and-contingencies-tables 61 false false R62.htm 061 - Disclosure - Note 13 - Commitments and Contingencies - Deductibles for General and Worker's Compensation Liability (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-13-commitments-and-contingencies-deductibles-for-general-and-workers-compensation-liability-details Note 13 - Commitments and Contingencies - Deductibles for General and Worker's Compensation Liability (Details) Details 62 false false R63.htm 062 - Disclosure - Note 14 - Stockholders' Equity (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-14-stockholders-equity-details-textual Note 14 - Stockholders' Equity (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-14-stockholders-equity 63 false false R64.htm 063 - Disclosure - Note 15 - Stock-based Compensation (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-15-stockbased-compensation-details-textual Note 15 - Stock-based Compensation (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-15-stockbased-compensation-tables 64 false false R65.htm 064 - Disclosure - Note 15 - Stock-based Compensation - Summary of Awards Granted (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-15-stockbased-compensation-summary-of-awards-granted-details Note 15 - Stock-based Compensation - Summary of Awards Granted (Details) Details 65 false false R66.htm 065 - Disclosure - Note 16 - Earnings Per Share (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-16-earnings-per-share-details-textual Note 16 - Earnings Per Share (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-16-earnings-per-share-tables 66 false false R67.htm 066 - Disclosure - Note 16 - Earnings Per Share - Calculation of Basic and Diluted EPS (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-16-earnings-per-share-calculation-of-basic-and-diluted-eps-details Note 16 - Earnings Per Share - Calculation of Basic and Diluted EPS (Details) Details 67 false false R68.htm 067 - Disclosure - Note 17 - Segment Reporting - Operating Information (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-17-segment-reporting-operating-information-details Note 17 - Segment Reporting - Operating Information (Details) Details 68 false false R69.htm 068 - Disclosure - Note 17 - Segment Reporting - Total Assets by Segment (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-17-segment-reporting-total-assets-by-segment-details Note 17 - Segment Reporting - Total Assets by Segment (Details) Details 69 false false R70.htm 069 - Disclosure - Note 17 - Segment Reporting - Revenue and Long-Lived Assets by Geographical Areas (Details) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-17-segment-reporting-revenue-and-longlived-assets-by-geographical-areas-details Note 17 - Segment Reporting - Revenue and Long-Lived Assets by Geographical Areas (Details) Details 70 false false R71.htm 070 - Disclosure - Note 18 - Related Party Transaction (Details Textual) Sheet http://www.concretepumpingholdings.com/20200131/role/statement-note-18-related-party-transaction-details-textual Note 18 - Related Party Transaction (Details Textual) Details http://www.concretepumpingholdings.com/20200131/role/statement-note-18-related-party-transaction 71 false false All Reports Book All Reports bbcp-20200131.xml bbcp-20200131.xsd bbcp-20200131_cal.xml bbcp-20200131_def.xml bbcp-20200131_lab.xml bbcp-20200131_pre.xml http://fasb.org/us-gaap/2019-01-31 http://xbrl.sec.gov/country/2017-01-31 http://fasb.org/srt/2019-01-31 http://xbrl.sec.gov/dei/2019-01-31 true true