v3.26.1
FAIR VALUE MEASUREMENTS - FV of Financial instruments, Nonrecurring (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
FINANCIAL LIABILITIES:    
Accrued interest payable $ 2,517 $ 2,735
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 9,004 8,755
Interest-bearing deposits in other banks 178,957 112,494
Restricted investment in bank stocks 8,979 8,944
Net loans 940,887 945,462
Mortgage servicing rights 177 196
Accrued interest receivable 4,664 4,997
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 685,458 633,448
Time deposits 492,590 503,245
Short-term borrowings 135,990 137,887
Long-term borrowings 106,424 107,124
Subordinated debentures 21,567 21,706
Accrued interest payable 2,517 2,735
Estimate of Fair Value Measurement | Fair Value Measurements, Nonrecurring | Fair Value, Inputs, Level 1    
FINANCIAL ASSETS:    
Cash and due from banks 9,004 8,755
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 178,957 112,494
Restricted investment in bank stocks 8,979 8,944
Net loans 0 0
Mortgage servicing rights 0 0
Accrued interest receivable 4,664 4,997
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 685,458 633,448
Time deposits 492,590 503,245
Short-term borrowings 135,990 137,887
Long-term borrowings 106,424 107,124
Subordinated debentures 21,567 21,706
Accrued interest payable 2,517 2,735
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 940,887 945,462
Mortgage servicing rights 177 196
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 9,004 8,755
Interest-bearing deposits in other banks 178,957 112,494
Restricted investment in bank stocks 8,979 8,944
Net loans 941,552 939,013
Mortgage servicing rights 177 196
Accrued interest receivable 4,664 4,997
FINANCIAL LIABILITIES:    
Demand, savings and other deposits 685,458 633,448
Time deposits 494,452 503,988
Short-term borrowings 135,604 136,845
Long-term borrowings 106,000 106,000
Subordinated debentures 25,000 25,000
Accrued interest payable $ 2,517 $ 2,735