| Cover Page | Nov. 05, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 8, 2021 |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-33174 |
| Entity Tax Identification Number | 83-3804854 |
| Entity Address, Address Line One | 968 James Street |
| Entity Address, City or Town | Syracuse, |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 13203 |
| City Area Code | (315) |
| Local Phone Number | 424-0513 |
| Title of 12(b) Security | Common Stock, par value $.01 per share |
| Trading Symbol | TAST |
| Security Exchange Name | NASDAQ |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Registrant Name | CARROLS RESTAURANT GROUP, INC |
| Amendment Flag | false |
| Entity Central Index Key | 0000809248 |
