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Cover - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 10, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
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 Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category 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     $ 685,478,000
Entity Common Stock, Shares Outstanding   14,982,655  
Documents Incorporated by Reference
DocumentPart of Form 10-K into which document is incorporated
Portions of the Registrant’s Proxy Statement for the Annual Meeting of Shareholders expected to be held on May 22, 2025
Part III - Items 10, 11, 12, 13 and 14
    
Amendment Flag false    
Entity Central Index Key 0001964333    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY