v3.26.1
Note 5 - Fair Value Measurements - Assets and Liabilities at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value $ 652,660 $ 654,377
Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 652,660 654,377
Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
US Government Agencies Debt Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 170,136 288,055
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 170,136 288,055
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
US States and Political Subdivisions Debt Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 152,729 153,717
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 152,729 153,717
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
Collateralized Mortgage-Backed Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 325,831 207,641
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 325,831 207,641
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
Corporate Debt Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 3,964 4,964
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 0 0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value 3,964 4,964
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Securities available for sale, at fair value $ 0 $ 0