| Submission | Nov. 08, 2024 |
| Submission [Line Items] | |
| Central Index Key | 0001562528 |
| Registrant Name | Franklin BSP Realty Trust, Inc. |
| Registration File Number | 333-283092 |
| Form Type | S-3 |
| Submission Type | 424B3 |
| Fee Exhibit Type | EX-FILING FEES |
| Offerings - Offering: 1 | Nov. 08, 2024 USD ($) shares |
| Offering: | |
| Rule 415(a)(6) | true |
| Security Type | Equity |
| Security Class Title | Common Stock, $0.01 par value per share |
| Amount Registered | shares | 1,882,841 |
| Maximum Aggregate Offering Price | $ 26,661,029 |
| Carry Forward Form Type | S-3 |
| Carry Forward File Number | 333-261039 |
| Carry Forward Initial Effective Date | Nov. 12, 2021 |
| Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward | $ 3,935 |
| Offering Note | The shares of Common Stock, par value $0.01 per share ("Common Stock"), of the registrant will be offered for resale by the selling stockholder. Pursuant to Rule 416 under the Securities Act, this registration statement also covers any additional number of shares of Common Stock issuable upon stock splits, stock dividends, or other distribution, recapitalization or similar events with respect to the shares of Common Stock being registered pursuant to this registration statement. In accordance with Rules 456(b) and 457(r) under the Securities Act of 1933, as amended, the registrant initially deferred payment of all of the registration fees for the Registration Statement on Form S-3 filed on November 8, 2024. In accordance with Rule 415(a)(6) of the Securities Act of 1933, as amended, this prospectus supplement carries forward 1,882,841 shares of unsold common stock previously registered under the Company's former Registration Statement on Form S-3 (File No. 333-261039) and related prospectus supplement dated December 22, 2023 (the "Prior Prospectus"). In connection with the registration of such unsold securities on the Prior Prospectus, the Registrant paid registration fees of $3,935. All 1,882,841 shares of unsold common stock are being carried forward to this prospectus supplement. Pursuant to Rule 415(a)(6), the offering of the unsold securities registered under the Prior Prospectus is deemed terminated as of the date hereof. |
| Fees Summary | Nov. 08, 2024 USD ($) |
| Fees Summary [Line Items] | |
| Total Offering | $ 26,661,029 |
| Previously Paid Amount | 0 |
| Total Fee Amount | 0 |
| Total Offset Amount | $ 0 |
| Narrative Disclosure | |
| Net Fee | $ 0 |
| Narrative - Max Aggregate Offering Price | $ 26,661,029 |
| Final Prospectus | true |
