| Document and Entity Information | Mar. 04, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001651094 |
| Document Type | 8-K |
| Document Period End Date | Mar. 4, 2021 |
| Entity Registrant Name | ELEVATE CREDIT, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-37680 |
| Entity Tax Identification Number | 46-4714474 |
| Entity Address, Address Line One | 4150 International Plaza |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | Fort Worth |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 76109 |
| City Area Code | (817) |
| Local Phone Number | 928-1500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Shares, $0.0004 par value |
| Trading Symbol | ELVT |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
