v3.26.1
FAIR VALUE MEASUREMENTS - FV of Financial instruments., nonrecurring (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
FINANCIAL LIABILITIES:    
Accrued interest payable $ 2,735 $ 2,152
Estimate of Fair Value Measurement | Fair Value Measurements, Nonrecurring | Fair Value, Inputs, Level 1, Level 2, and Level 3    
FINANCIAL ASSETS:    
Cash and due from banks 8,755 9,933
Interest-bearing deposits in other banks 112,494 7,321
Restricted investment in bank stocks 8,944 8,984
Net loans 945,462 929,302
Mortgage servicing rights 196 218
Accrued interest receivable 4,997 4,993
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 633,448 677,762
Time deposits 503,245 366,772
Short-term borrowings 137,887 134,541
Long-term borrowings 107,124 107,728
Subordinated debentures 21,706 20,618
Accrued interest payable 2,735 2,152
Estimate of Fair Value Measurement | Fair Value Measurements, Nonrecurring | Fair Value, Inputs, Level 1    
FINANCIAL ASSETS:    
Cash and due from banks 8,755 9,933
Interest-bearing deposits in other banks 0 0
Restricted investment in bank stocks 0 0
Net loans 0 0
Mortgage servicing rights 0 0
Accrued interest receivable 0 0
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 0 0
Time deposits 0 0
Short-term borrowings 0 0
Long-term borrowings 0 0
Subordinated debentures 0 0
Accrued interest payable 0 0
Estimate of Fair Value Measurement | Fair Value Measurements, Nonrecurring | Fair Value, Inputs, Level 2    
FINANCIAL ASSETS:    
Cash and due from banks 0 0
Interest-bearing deposits in other banks 112,494 7,321
Restricted investment in bank stocks 8,944 8,984
Net loans 0 0
Mortgage servicing rights 0 0
Accrued interest receivable 4,997 4,993
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 633,448 677,762
Time deposits 503,245 366,772
Short-term borrowings 137,887 134,541
Long-term borrowings 107,124 107,728
Subordinated debentures 21,706 20,618
Accrued interest payable 2,735 2,152
Estimate of Fair Value Measurement | Fair Value Measurements, Nonrecurring | Fair Value, Inputs, Level 3    
FINANCIAL ASSETS:    
Cash and due from banks 0 0
Interest-bearing deposits in other banks 0 0
Restricted investment in bank stocks 0 0
Net loans 945,462 929,302
Mortgage servicing rights 196 218
Accrued interest receivable 0 0
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 0 0
Time deposits 0 0
Short-term borrowings 0 0
Long-term borrowings 0 0
Subordinated debentures 0 0
Accrued interest payable 0 0
Carrying Amount | Fair Value Measurements, Nonrecurring    
FINANCIAL ASSETS:    
Cash and due from banks 8,755 9,933
Interest-bearing deposits in other banks 112,494 7,321
Restricted investment in bank stocks 8,944 8,984
Net loans 939,013 940,779
Mortgage servicing rights 196 218
Accrued interest receivable 4,997 4,993
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 633,448 677,762
Time deposits 503,988 368,118
Short-term borrowings 136,845 134,426
Long-term borrowings 106,000 106,000
Subordinated debentures 25,000 25,000
Accrued interest payable $ 2,735 $ 2,152