v3.25.4
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
12 Months Ended
Dec. 31, 2025
USD ($)
segment
item
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
BANK PREMISES AND EQUIPMENT        
Number of reportable segments | segment 1      
Loans held for sale $ 1,591,000 $ 2,485,000    
Contractual performance period of nonaccrual loans to be restored to accrual status 6 months      
Credit losses related to unfunded loan commitments $ 31,048,000 20,035,000 $ 19,208,000 $ 16,615,000
Debt security delinquent period to put in nonaccrual status 90 days      
Allowance for credit losses related to the available-for-sale portfolio $ 0 0    
Interest receivable 2,514,000 1,964,000    
Interest receivable excluded from the estimate of credit losses $ 9,039,000 $ 6,680,000    
Minimum of credit extension of loans for inclusion in individual review for credit losses | item 1      
Repayment period of credit facilities 1 year      
Weighted-average remaining life of the entire portfolio 3 years 10 months 13 days 4 years 14 days 4 years 5 months 23 days  
Forecast relevant to collectability of cash flows 2 years      
Loans Portfolio, Number of Extension For Individual Review | item 1      
Accrued interest related to unrecognized tax benefits $ 0      
Fair value of trust assets under management $ 1,468,691,000 $ 1,347,853,000    
Trust revenue is earned and collected monthly 79.00%      
Minimum | Buildings and improvements        
BANK PREMISES AND EQUIPMENT        
Useful lives 3 years      
Minimum | Furniture and equipment        
BANK PREMISES AND EQUIPMENT        
Useful lives 3 years      
Maximum | Buildings and improvements        
BANK PREMISES AND EQUIPMENT        
Useful lives 40 years      
Maximum | Furniture and equipment        
BANK PREMISES AND EQUIPMENT        
Useful lives 10 years      
Commercial        
BANK PREMISES AND EQUIPMENT        
Credit losses related to unfunded loan commitments     $ 2,116,000 $ 1,942,000
Residential mortgage        
BANK PREMISES AND EQUIPMENT        
Threshold amount of financing receivables individually evaluated for credit losses $ 400,000      
Consumer        
BANK PREMISES AND EQUIPMENT        
Threshold amount of financing receivables individually evaluated for credit losses $ 400,000