| Document And Entity Information | Jan. 28, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | CONCRETE PUMPING HOLDINGS, INC. |
| Document, Type | 8-K |
| Document, Period End Date | Jan. 28, 2021 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 001-38166 |
| Entity, Tax Identification Number | 83-1779605 |
| Entity, Address, Address Line One | 500 E. 84th Avenue, Suite A-5 |
| Entity, Address, City or Town | Thornton |
| Entity, Address, State or Province | CO |
| Entity, Address, Postal Zip Code | 80229 |
| City Area Code | 303 |
| Local Phone Number | 289-7497 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock |
| Trading Symbol | BBCP |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | true |
| Entity, Ex Transition Period | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001703956 |
