| Cover Page | Aug. 01, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Aug. 1, 2019 |
| Entity Registrant Name | Continental Building Products, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-36293 |
| Entity Tax Identification Number | 61-1718923 |
| Entity Address, Address Line One | 12950 Worldgate Drive |
| Entity Address, Address Line Two | Suite 700 |
| Entity Address, City or Town | Herndon |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 20170 |
| City Area Code | (703) |
| Local Phone Number | 480-3800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value per share |
| Trading Symbol | CBPX |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001592480 |
