| Document and Entity Information | May 16, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 16, 2024 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-33174 |
| Entity Registrant Name | CARROLS RESTAURANT GROUP, INC. |
| Entity Central Index Key | 0000809248 |
| Entity Incorporation, State or Country Code | DE |
| 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 $0.01 per share |
| Trading Symbol | TAST |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
