Cover
| Cover | 12 Months Ended | |
| Nov. 21, 2022 | Dec. 31, 2021 | |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | Nov. 21, 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 | |
| Current Fiscal Year End Date | --12-31 |