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Premises and Equipment - Additional information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2019
Premises and Equipment        
Operating leases right of use asset $ 6,621,000 $ 7,397,000    
Operating leases liability $ 6,870,000 7,599,000    
Weighted-average lease term 6 years 10 months 24 days      
Operating lease, weighted average discount rate, percent 3.79%      
Operating lease, expense $ 1,740,000 1,579,000 $ 1,500,000  
Lease expense related to ATMs 317,000 307,000 307,000  
Income recognized from lessor agreements $ 1,300,000 $ 1,200,000 $ 1,200,000  
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Occupancy, Net Occupancy, Net Occupancy, Net  
Minimum        
Premises and Equipment        
Lessee expected lease terms P0Y3M18D      
Maximum        
Premises and Equipment        
Lessee expected lease terms P14Y10M24D      
ASU 2016-02 | Adjustment        
Premises and Equipment        
Operating leases right of use asset       $ 9,500,000