v3.26.1
Nature of Business and Significant Accounting Policies (Details)
$ / shares in Units, $ in Thousands
6 Months Ended
Jul. 21, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
Office
location
shares
Dec. 31, 2025
shares
Nature Of Business And Significant Accounting Policies [Line Items]      
Proceeds from issuance of common stock | $   $ 156,012  
Common stock, shares outstanding   11,180,786 11,141,033
Number of branches | location   12  
Number of representative offices | Office   3  
Subsequent Event      
Nature Of Business And Significant Accounting Policies [Line Items]      
Common stock, shares outstanding 15,635,966    
Public stock offering (2nd-step conversion of Rhinebeck Bancorp, MHC) | Subsequent Event      
Nature Of Business And Significant Accounting Policies [Line Items]      
Common stock issued 8,880,210    
Share issued price per share | $ / shares $ 10    
Proceeds from issuance of common stock | $ $ 88,800    
Stock exchange ratio 1.3978    
Cash in lieu of fractional shares (in $ per share) | $ / shares $ 10