| Document And Entity Information | Jun. 21, 2022 |
| Document Information [Line Items] | |
| Entity, Registrant Name | REPUBLIC FIRST BANCORP, INC. |
| Document, Type | 8-K |
| Document, Period End Date | Jun. 21, 2022 |
| Entity, Incorporation, State or Country Code | PA |
| Entity, File Number | 000-17007 |
| Entity, Tax Identification Number | 23-2486815 |
| Entity, Address, Address Line One | 50 South 16th Street, Suite 2400 |
| Entity, Address, City or Town | Philadelphia |
| Entity, Address, State or Province | PA |
| Entity, Address, Postal Zip Code | 19102 |
| City Area Code | 215 |
| Local Phone Number | 735-4422 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | FRBK |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000834285 |
