| Document and Entity Information Cover Page | Aug. 06, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Aug. 6, 2019 |
| Entity Registrant Name | Hi-Crush Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35630 |
| Entity Tax Identification Number | 90-0840530 |
| Entity Address, Address Line One | 1330 Post Oak Blvd |
| Entity Address, Address Line Two | Suite 600 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77056 |
| City Area Code | 713 |
| Local Phone Number | 980-6200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Trading Symbol | HCR |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001549848 |
| Amendment Flag | false |
