Cover
| Cover | 12 Months Ended | |
| May 03, 2024 | Dec. 31, 2024 | |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | May 03, 2024 | |
| Entity Registrant Name | Burke & Herbert Financial Services Corp. | |
| Entity Incorporation, State or Country Code | VA | |
| Entity File Number | 001-41633 | |
| 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 | |
| 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 $.50 | |
| Trading Symbol | BHRB | |
| Security Exchange Name | NASDAQ | |
| Entity Emerging Growth Company | true | |
| Entity Ex Transition Period | false | |
| Amendment Flag | false | |
| Entity Central Index Key | 0001964333 | |
| Current Fiscal Year End Date | --12-31 |