Quarterly report [Sections 13 or 15(d)]

FAIR VALUE MEASUREMENTS (Schedule of Financial Instruments with Estimated Fair Values) (Details)

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FAIR VALUE MEASUREMENTS (Schedule of Financial Instruments with Estimated Fair Values) (Details) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
ASSETS:    
Loans, Net of Allowance for Credit Losses $ 2,487,405,000 $ 2,515,117,000
Fair value inputs, Level 1 [Member]    
ASSETS:    
Cash 64,214,000 62,189,000
Fed Funds Sold and Interest Bearing Deposits 424,756,000 467,782,000
Investment Securities, Held to Maturity 58,453,000 129,268,000
Other Equity Securities 0 0
Mortgage Servicing Rights 0 0
Loans, Net of Allowance for Credit Losses 0 0
LIABILITIES:    
Deposits 0 0
Short-Term Borrowings 0 0
Subordinated Notes Payable 0 0
Long-Term Borrowings 0 0
Fair Value, Inputs, Level 2 [Member]    
ASSETS:    
Cash 0 0
Fed Funds Sold and Interest Bearing Deposits 0 0
Investment Securities, Held to Maturity 285,138,000 240,052,000
Other Equity Securities 2,848,000 2,848,000
Mortgage Servicing Rights 0 0
Loans, Net of Allowance for Credit Losses 0 0
LIABILITIES:    
Deposits 3,751,373,000 3,662,466,000
Short-Term Borrowings 33,276,000 50,092,000
Subordinated Notes Payable 32,067,000 40,116,000
Long-Term Borrowings 680,000 680,000
Fair Value, Inputs, Level 3 [Member]    
ASSETS:    
Cash 0 0
Fed Funds Sold and Interest Bearing Deposits 0 0
Investment Securities, Held to Maturity 0 0
Other Equity Securities 0 0
Mortgage Servicing Rights 1,446,000 1,359,000
Loans, Net of Allowance for Credit Losses 2,386,137,000 2,416,937,000
LIABILITIES:    
Deposits 0 0
Short-Term Borrowings 0 0
Subordinated Notes Payable 0 0
Long-Term Borrowings 0 0
Carrying (Reported) Amount, Fair Value Disclosure [Member]    
ASSETS:    
Cash 64,214,000 62,189,000
Fed Funds Sold and Interest Bearing Deposits 424,756,000 467,782,000
Investment Securities, Held to Maturity 353,296,000 377,446,000
Other Equity Securities 2,848,000 2,848,000
Mortgage Servicing Rights 903,000 924,000
Loans, Net of Allowance for Credit Losses 2,487,405,000 2,515,117,000
LIABILITIES:    
Deposits 3,751,617,000 3,662,312,000
Short-Term Borrowings 33,276,000 50,092,000
Subordinated Notes Payable 33,303,000 42,582,000
Long-Term Borrowings $ 680,000 $ 680,000