| Document and Entity Information | May 28, 2024 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001600033 |
| Document Type | 8-K |
| Document Period End Date | May 28, 2024 |
| Entity Registrant Name | e.l.f. Beauty, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-37873 |
| Entity Tax Identification Number | 46-4464131 |
| Entity Address, Address Line One | 570 10th Street |
| Entity Address, City or Town | Oakland |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94607 |
| City Area Code | (510) |
| Local Phone Number | 778-7787 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.01 par value |
| Trading Symbol | ELF |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
