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Note 2 - INVESTMENT SECURITIES - Securities by Contractual Maturity (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Securities HTM: |  |
Securities HTM, Amortized Cost, Due in one year or less | $ 484 |
Securities HTM, Fair Value, Due in one year or less | 483 |
Securities HTM, Amortized Cost, Due after one year through five years | 27,449 |
Securities HTM, Fair Value, Due after one year through five years | 25,855 |
Securities HTM, Amortized Cost, Due after five years | 926,445 |
Securities HTM, Fair Value, Due after five years | 828,706 |
Securities HTM, Amortized Cost | 954,378 | $ 836,060
Securities HTM, Fair Value | 855,044 | 800,583
Securities AFS: |  |
Securities AFS, Amortized Cost, Due in one year or less | 380 |
Securities AFS, Fair Value, Due in one year or less | 378 |
Securities AFS, Amortized Cost, Due after one year through five years | 19,710 |
Securities AFS, Fair Value, Due after one year through five years | 19,153 |
Securities AFS, Amortized Cost, Due after five years | 234,500 |
Securities AFS, Fair Value, Due after five years | 189,792 |
Securities AFS, Amortized Cost, Maturity Total | 254,590 |
Securities AFS, Fair Value, Maturity Total | 209,323 |
Securities AFS, Amortized Cost | 320,212 | 331,337
Securities AFS, Fair Value | 271,349 | 281,109
Callable Securities |  |
Securities HTM: |  |
Securities HTM, Amortized Cost, Callable of call options | 279,243 |
Securities HTM, Fair Value, Callable of call options | 276,922 |
Securities AFS: |  |
Securities AFS, Amortized Cost | 237,403 |
Securities AFS, Fair Value | 194,003 |
Residential mortgage-backed and related securities |  |
Securities AFS: |  |
Securities AFS, Amortized Cost | 60,800 | 55,641
Securities AFS, Fair Value | 57,108 | 50,042
Securities AFS, Amortized Cost, Without Single Maturity | 60,800 |
Securities AFS, Fair Value, Without Single Maturity | 57,108 |
Asset-backed securities |  |
Securities AFS: |  |
Securities AFS, Amortized Cost | 4,822 | 9,053
Securities AFS, Fair Value | 4,918 | 9,224
Securities AFS, Amortized Cost, Without Single Maturity | 4,822 |
Securities AFS, Fair Value, Without Single Maturity | 4,918 |
Municipal securities |  |
Securities HTM: |  |
Securities HTM, Amortized Cost | 924,179 | 806,992
Securities HTM, Fair Value | 821,271 | 766,866
Securities AFS: |  |
Securities AFS, Amortized Cost | 203,826 | 204,664
Securities AFS, Fair Value | 161,490 | 164,575
Municipal securities | Callable Securities |  |
Securities HTM: |  |
Securities HTM, Amortized Cost, Callable of call options | 250,094 |
Securities HTM, Fair Value, Callable of call options | 32,724 |
Securities AFS: |  |
Securities AFS, Amortized Cost, Without Single Maturity | 203,682 |
Securities AFS, Fair Value, Without Single Maturity | 161,355 |
Corporate securities |  |
Securities HTM: |  |
Securities HTM, Amortized Cost | 29,149 | 28,018
Securities HTM, Fair Value | 32,724 | 32,675
Securities AFS: |  |
Securities AFS, Amortized Cost | 34,688 | 38,866
Securities AFS, Fair Value | 33,625 | $ 36,677
Corporate securities | Callable Securities |  |
Securities HTM: |  |
Securities HTM, Amortized Cost, Callable of call options | 29,149 |
Securities HTM, Fair Value, Callable of call options | 244,198 |
Securities AFS: |  |
Securities AFS, Amortized Cost, Without Single Maturity | 33,721 |
Securities AFS, Fair Value, Without Single Maturity | $ 32,648 |

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