| Cover | Jul. 25, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 25, 2022 |
| Entity Registrant Name | WAITR HOLDINGS INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37788 |
| Entity Tax Identification Number | 26-3828008 |
| Entity Address, Postal Zip Code | 70501 |
| City Area Code | 337 |
| Local Phone Number | 534-6881 |
| 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 $0.0001 Per Share |
| Trading Symbol | WTRH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001653247 |
| Amendment Flag | false |
