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Note 7 - Employee and Director Benefits (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Weighted |  |  | Average |  |  |  |  |
|  |  |  |  |  | Average |  |  | Remaining |  |  | Aggregate |
|  |  |  |  |  | Exercise |  |  | Contractual |  |  | Intrinsic |
|  | Shares |  |  | Price |  |  | Term (years) |  |  | Value |
|  |  |  |  |  |  |  |  |  |  |  |  |  | (In Thousands) |
Nine Months Ended September 30, 2025: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at January 1, 2025 |  |  | 80,450 |  |  | $ | 26.03 |  |  |  | 1.9 |  |  | $ | 4,723 |
Exercised |  |  | (31,950 | ) |  |  | 17.10 |  |  |  | - |  |  |  | 2,027 |
Outstanding at September 30, 2025 |  |  | 48,500 |  |  | $ | 31.92 |  |  |  | 2.2 |  |  | $ | 2,358 |
Exercisable at September 30, 2025 |  |  | 48,500 |  |  | $ | 31.92 |  |  |  | 2.2 |  |  | $ | 2,358 |
Nine Months Ended September 30, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at January 1, 2024 |  |  | 165,800 |  |  | $ | 24.35 |  |  |  | 2.9 |  |  | $ | 7,211 |
Exercised |  |  | (33,350 | ) |  |  | 18.71 |  |  |  | 1.0 |  |  |  | 11,627 |
Outstanding at September 30, 2024 |  |  | 132,450 |  |  | $ | 25.69 |  |  |  | 2.6 |  |  | $ | 5,117 |
Exercisable at September 30, 2024 |  |  | 115,950 |  |  | $ | 22.95 |  |  |  | 1.7 |  |  | $ | 6,808 |
Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] |
|  | Restricted Stock |  |  | Performance Shares |
|  | Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Shares |  |  | Weighted Average Grant Date Fair Value |
Nine Months Ended September 30, 2025: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested at January 1, 2025 |  |  | 145,837 |  |  | $ | 66.35 |  |  |  | 30,065 |  |  | $ | 70.45 |
Granted |  |  | 33,884 |  |  |  | 84.67 |  |  |  | 6,316 |  |  |  | 84.64 |
Additional performance share attainment |  |  | - |  |  |  | - |  |  |  | 290 |  |  |  | 89.68 |
Vested |  |  | (38,517 | ) |  |  | 62.99 |  |  |  | (7,126 | ) |  |  | 72.00 |
Forfeited |  |  | (3,530 | ) |  |  | 73.86 |  |  |  | (2,645 | ) |  |  | 71.82 |
Non-vested at September 30, 2025 |  |  | 137,674 |  |  | $ | 71.61 |  |  |  | 26,900 |  |  | $ | 73.44 |
Nine Months Ended September 30, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested at January 1, 2024 |  |  | 158,298 |  |  | $ | 58.08 |  |  |  | 31,944 |  |  | $ | 58.25 |
Granted |  |  | 50,324 |  |  |  | 66.74 |  |  |  | 14,253 |  |  |  | 68.67 |
Vested |  |  | (46,938 | ) |  |  | 45.61 |  |  |  | (18,653 | ) |  |  | 37.05 |
Forfeited |  |  | (5,696 | ) |  |  | 53.50 |  |  |  | (2,318 | ) |  |  | 72.18 |
Non-vested at September 30, 2024 |  |  | 155,988 |  |  | $ | 64.79 |  |  |  | 25,226 |  |  | $ | 78.53 |

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