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Fair Value (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Other Repossessed Assets $ 1,200,000 $ 1,100,000    
Discount percentage applied to real estate appraised values 15.00%      
Discount percentage applied to lot development appraised values 6.00%      
Mortgage loan servicing rights $ 13,918,000 14,656,000 $ 15,792,000 $ 15,264,000
Servicing Asset at Fair Value, Amount 400,000 900,000    
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance 19,000 94,000 182,000 $ 1,568,000
MSRs recorded at cost 13,500,000 13,800,000    
Valuation Allowance for Impairment of Recognized Servicing Assets, Additions (Deductions) for Expenses (Recoveries) (75,000) (88,000) (1,386,000)  
Other real estate owned 938,000 983,000    
Estimated fair value of other real estate owned (OREO) 938,000 938,000    
OREO devaluations 30,000 (400,000) 11,300,000  
Alternative Investment 50,142,000 45,885,000    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments 17,600,000 18,400,000    
Alternative Investment, income recognized 468,000 371,000 $ 2,400,000  
Nonrecurring basis        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Servicing Asset at Fair Value, Amount 371,000 866,000    
Fair Value Measured at Net Asset Value Per Share [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Alternative Investment $ 32,600,000 $ 27,500,000