Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Fair Value - Assets and Liabilities Measured on Recurring Basis (Details)

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Note 4 - Fair Value - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Debt securities available for sale, at fair value $ 491,214 $ 508,798
Fair Value, Recurring [Member]    
Loans held for sale 0 0
Interest rate swaps 5,553 4,856
Total assets measured at fair value on recurring basis 498,074 514,972
Interest rate swaps (5,553) (4,856)
Total liabilities measured at fair value on recurring basis (5,553) (4,856)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Loans held for sale 0 0
Interest rate swaps 0 0
Total assets measured at fair value on recurring basis 0 0
Interest rate swaps 0 0
Total liabilities measured at fair value on recurring basis 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Loans held for sale 0 0
Interest rate swaps 5,553 4,856
Total assets measured at fair value on recurring basis 498,074 514,972
Interest rate swaps (5,553) (4,856)
Total liabilities measured at fair value on recurring basis (5,553) (4,856)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Loans held for sale 0 0
Interest rate swaps 0 0
Total assets measured at fair value on recurring basis 0 0
Interest rate swaps 0 0
Total liabilities measured at fair value on recurring basis 0 0
US Treasury and Government [Member]    
Debt securities available for sale, at fair value 235,081 245,492
US Treasury and Government [Member] | Fair Value, Recurring [Member]    
Debt securities available for sale, at fair value 235,081 245,492
US Treasury and Government [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Debt securities available for sale, at fair value 0 0
US Treasury and Government [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Debt securities available for sale, at fair value 235,081 245,492
US Treasury and Government [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Debt securities available for sale, at fair value 0 0
US Government Agencies Debt Securities [Member]    
Debt securities available for sale, at fair value 107,032 111,336
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member]    
Debt securities available for sale, at fair value 107,032 111,336
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Debt securities available for sale, at fair value 0 0
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Debt securities available for sale, at fair value 107,032 111,336
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Debt securities available for sale, at fair value 0 0
Nontaxable Municipal Bonds [Member]    
Debt securities available for sale, at fair value 30,281 30,597
Nontaxable Municipal Bonds [Member] | Fair Value, Recurring [Member]    
Debt securities available for sale, at fair value 30,281 30,597
Nontaxable Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Debt securities available for sale, at fair value 0 0
Nontaxable Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Debt securities available for sale, at fair value 30,281 30,597
Nontaxable Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Debt securities available for sale, at fair value 0 0
Taxable Municipal Bonds [Member]    
Debt securities available for sale, at fair value 107,501 110,076
Taxable Municipal Bonds [Member] | Fair Value, Recurring [Member]    
Debt securities available for sale, at fair value 107,501 110,076
Taxable Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Debt securities available for sale, at fair value 0 0
Taxable Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Debt securities available for sale, at fair value 107,501 110,076
Taxable Municipal Bonds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Debt securities available for sale, at fair value 0 0
Corporate Bonds And Other Debt Securities [Member]    
Debt securities available for sale, at fair value 11,319 11,297
Corporate Bonds And Other Debt Securities [Member] | Fair Value, Recurring [Member]    
Debt securities available for sale, at fair value 11,319 11,297
Corporate Bonds And Other Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Debt securities available for sale, at fair value 0 0
Corporate Bonds And Other Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Debt securities available for sale, at fair value 11,319 11,297
Corporate Bonds And Other Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Debt securities available for sale, at fair value 0 0
Other Equity Securities [Member] | Fair Value, Recurring [Member]    
Other equity securities 1,307 1,318
Other Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Other equity securities 0 0
Other Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Other equity securities 1,307 1,318
Other Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Other equity securities $ 0 $ 0