| Cover | Oct. 20, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 20, 2021 |
| Entity File Number | 000-51018 |
| Entity Registrant Name | The Bancorp, Inc. |
| Entity Central Index Key | 0001295401 |
| Entity Tax Identification Number | 23-3016517 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 409 Silverside Road |
| Entity Address, City or Town | Wilmington |
| Entity Address, State or Province | DE |
| Entity Address, Postal Zip Code | 19809 |
| City Area Code | 302 |
| Local Phone Number | 385-5000 |
| 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 $1.00 per share |
| Trading Symbol | TBBK |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
