| Cover - USD ($) | 12 Months Ended | ||
| Dec. 31, 2023 | Apr. 11, 2024 | Jun. 30, 2023 | |
| Cover [Abstract] | |||
| Document Type | 10-K/A | ||
| Document Annual Report | true | ||
| Document Period End Date | Dec. 31, 2023 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Document Transition Report | false | ||
| Entity File Number | 001-41633 | ||
| Entity Registrant Name | Burke & Herbert Financial Services Corp. | ||
| Entity Incorporation, State or Country Code | VA | ||
| Entity Tax Identification Number | 92-0289417 | ||
| Entity Address, Address Line One | 100 S. Fairfax Street | ||
| Entity Address, City or Town | Alexandria | ||
| Entity Address, State or Province | VA | ||
| Entity Address, Postal Zip Code | 22314 | ||
| City Area Code | 703 | ||
| Local Phone Number | 666-3555 | ||
| Title of 12(b) Security | Common Stock, par value $0.50 per share | ||
| Trading Symbol | BHRB | ||
| Security Exchange Name | NASDAQ | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | true | ||
| Entity Ex Transition Period | false | ||
| ICFR Auditor Attestation Flag | false | ||
| Document Financial Statement Error Correction Flag | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 408,054,000 | ||
| Entity Common Stock, Shares Outstanding | 7,441,435 | ||
| Documents Incorporated by Reference | None. | ||
| Amendment Flag | true | ||
| Entity Central Index Key | 0001964333 | ||
| Document Fiscal Year Focus | 2023 | ||
| Document Fiscal Period Focus | FY | ||
| Amendment Description | This Amendment No. 1 to the Annual Report on Form 10-K (this “Amendment”) amends the Annual Report on Form 10-K for the year ended December 31, 2023 (the “Form 10-K”), originally filed with the Securities and Exchange Commission on March 22, 2024 (the “Original Filing”) by Burke & Herbert Financial Services Corp. (“Burke & Herbert” or the “Company”). Burke & Herbert is filing this Amendment solely to (i) present certain information required by Part III of Form 10-K, that was omitted in the Original Filing in reliance on General Instruction G(3) to Form 10-K, and (ii) to delete the reference to the incorporation by reference of the information required by Part III of Form 10-K from the cover page. Accordingly, Burke & Herbert hereby amends and replaces in its entirety Part III of the Form 10- K. |
| Audit Information | 12 Months Ended |
| Dec. 31, 2023 | |
| Audit Information [Abstract] | |
| Auditor Firm ID | 173 |
| Auditor Name | Crowe LLP |
| Auditor Location | Washington, D.C. |
