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Summary of Significant Accounting Policies - Premises and Equipment (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Transfers and Servicing of Financial Assets    
Mortgage loans serviced for others $ 709.1 $ 737.2
Other Assets    
Premises and equipment    
Fixed Assets Held for Sale $ 1.4 $ 1.0
Buildings | Minimum    
Premises and equipment    
Useful lives 25 years  
Buildings | Maximum    
Premises and equipment    
Useful lives 40 years  
Building Improvements | Minimum    
Premises and equipment    
Useful lives 3 years  
Building Improvements | Maximum    
Premises and equipment    
Useful lives 15 years  
Furniture and equipment | Minimum    
Premises and equipment    
Useful lives 3 years  
Furniture and equipment | Maximum    
Premises and equipment    
Useful lives 10 years