v3.26.1
Loans and Leases and Allowance for Credit Losses - Narrative (Details)
3 Months Ended 15 Months Ended
Mar. 31, 2026
USD ($)
loan
property
segment
Mar. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
loan
property
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Financing Receivable, Modifications [Line Items]          
Number of loan portfolio segments | segment 7        
Provision (recovery) charged to expense $ 3,200,000 $ 843,000      
Allowance for credit losses $ 43,950,000 38,175,000 $ 43,950,000 $ 40,906,000 $ 37,423,000
Percentage of allowance for credit losses to aggregate loans 0.97%   0.97% 0.94%  
Interest income on nonaccrual loans     $ 0    
Commitments to extend credit $ 1,044,905,000   1,044,905,000 $ 1,093,462,000  
Nonaccrual restructured loans $ 0   $ 0    
Residential Real Estate          
Financing Receivable, Modifications [Line Items]          
Number of properties in other real estate owned | property 0   0    
Consumer Real Estate          
Financing Receivable, Modifications [Line Items]          
Allowance for credit losses $ 8,912,000 $ 8,688,000 $ 8,912,000 $ 8,767,000 $ 8,355,000
Residential real estate | loan 3   3    
Mortgage loans in process of foreclosure $ 1,800,000   $ 1,800,000