v3.26.3
Note 8 - Fair Value Disclosures and Reporting and Fair Value Measurements - Recurring Fair Value Measurements (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Total available-for-sale securities $ 584,897 $ 625,330
US Government Agencies Debt Securities [Member]    
Total available-for-sale securities 22,678 32,901
Collateralized Mortgage-Backed Securities [Member]    
Total available-for-sale securities 272,334 259,760
US States and Political Subdivisions Debt Securities [Member]    
Total available-for-sale securities 47,511 46,921
Corporate Debt Securities [Member]    
Total available-for-sale securities 83,836 86,467
Collateralized Mortgage Obligations [Member]    
Total available-for-sale securities 158,538 199,281
Fair Value, Recurring [Member]    
Total available-for-sale securities 584,897 625,330
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Total available-for-sale securities 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Total available-for-sale securities 583,474 624,017
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Total available-for-sale securities 1,423 1,313
Available-for-sale, realized gain (loss) 0 0
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]    
Total available-for-sale securities 22,678 32,901
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Total available-for-sale securities 0 0
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Total available-for-sale securities 22,678 32,901
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Total available-for-sale securities 0 0
Available-for-sale, realized gain (loss) 0 0
Fair Value, Recurring [Member] | Collateralized Mortgage-Backed Securities [Member]    
Total available-for-sale securities 272,334 259,760
Fair Value, Recurring [Member] | Collateralized Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Total available-for-sale securities 0 0
Fair Value, Recurring [Member] | Collateralized Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Total available-for-sale securities 272,334 259,760
Fair Value, Recurring [Member] | Collateralized Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Total available-for-sale securities 0 0
Available-for-sale, realized gain (loss) 0 0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]    
Total available-for-sale securities 47,511 46,921
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Total available-for-sale securities 0 0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Total available-for-sale securities 47,511 46,921
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Total available-for-sale securities 0 0
Available-for-sale, realized gain (loss) 0 0
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Total available-for-sale securities 83,836 86,467
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Total available-for-sale securities 0 0
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Total available-for-sale securities 82,413 85,154
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Total available-for-sale securities 1,423 1,313
Available-for-sale, realized gain (loss) 0 0
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member]    
Total available-for-sale securities 158,538 199,281
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 1 [Member]    
Total available-for-sale securities 0 0
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member]    
Total available-for-sale securities 158,538 199,281
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member]    
Total available-for-sale securities 0 0
Available-for-sale, realized gain (loss) $ 0 $ 0