v3.25.3
Note 7 - Fair Value - Financial Assets At Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Securities $ 537,503 $ 360,530
US States and Political Subdivisions Debt Securities [Member]    
Securities 707 706
US Treasury and Government [Member]    
Securities 533,354 246,290
Residential Mortgage-Backed Securities [Member]    
Securities 2,681 2,911
Collateralized Mortgage-Backed Securities [Member]    
Securities 761 850
US Government-sponsored Enterprises Debt Securities [Member]    
Securities   109,773
Fair Value, Inputs, Level 1 [Member]    
Securities 533,354 246,290
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Securities 0 0
Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member]    
Securities 533,354 246,290
Fair Value, Inputs, Level 1 [Member] | Residential Mortgage-Backed Securities [Member]    
Securities 0 0
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage-Backed Securities [Member]    
Securities 0 0
Fair Value, Inputs, Level 1 [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Securities   0
Fair Value, Inputs, Level 2 [Member]    
Securities 4,149 114,240
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Securities 707 706
Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member]    
Securities 0 0
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage-Backed Securities [Member]    
Securities 2,681 2,911
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage-Backed Securities [Member]    
Securities 761 850
Fair Value, Inputs, Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Securities   109,773
Fair Value, Inputs, Level 3 [Member]    
Securities 0 0
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Securities 0 0
Fair Value, Inputs, Level 3 [Member] | US Treasury and Government [Member]    
Securities 0 0
Fair Value, Inputs, Level 3 [Member] | Residential Mortgage-Backed Securities [Member]    
Securities 0 0
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage-Backed Securities [Member]    
Securities $ 0 0
Fair Value, Inputs, Level 3 [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Securities   $ 0