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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 01, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Securities Act File Number 001-38779    
Entity Registrant Name Rhinebeck Bancorp, Inc.    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 83-2117268    
Entity Address, Address Line One 2 Jefferson Plaza    
Entity Address, City or Town Poughkeepsie    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 12601    
City Area Code 845    
Local Phone Number 454-8555    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol RBKB    
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 true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Document Financial Statement Error Correction [Flag] false    
Entity Common Stock, Shares Outstanding   11,094,828  
Entity Public Float     $ 28,840,250
Documents Incorporated by Reference [Text Block]

Certain portions of the registrant’s definitive proxy statement, in connection with its 2025 annual meeting of stockholders, to be filed within 120 days of December 31, 2024, are incorporated by reference into Part III of this Annual Report on Form 10-K.

    
Auditor Name Wolf & Company, P.C.    
Auditor Firm ID 392    
Auditor Location Boston, Massachusetts    
Entity Central Index Key 0001751783    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false