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Note 13 - Employee and Director Benefits (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  |  |  |  |  |  |  |  | (In Thousands) |
Year Ended December 31, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of year |  |  | 165,300 |  |  | $ | 24.35 |  |  |  | 2.9 |  |  | $ | 7,211 |
Exercised |  |  | (77,350 | ) |  |  | 23.71 |  |  |  | 2.0 |  |  |  | 57,618 |
Forfeited |  |  | (7,500 | ) |  |  | 6.92 |  |  |  | - |  |  |  | - |
Outstanding at end of year |  |  | 80,450 |  |  | $ | 26.03 |  |  |  | 1.9 |  |  | $ | 4,723 |
Exercisable at December 31, 2024: |  |  | 80,450 |  |  | $ | 26.03 |  |  |  | 1.9 |  |  | $ | 4,723 |
Year Ended December 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of year |  |  | 280,000 |  |  | $ | 19.43 |  |  |  | 3.0 |  |  | $ | 14,088 |
Exercised |  |  | (112,200 | ) |  |  | 11.84 |  |  |  | 0.7 |  |  |  | 6,148 |
Forfeited |  |  | (2,500 | ) |  |  | 35.47 |  |  |  | 4.8 |  |  |  | 78 |
Outstanding at end of year |  |  | 165,300 |  |  | $ | 24.35 |  |  |  | 2.9 |  |  | $ | 7,211 |
Exercisable at December 31, 2023: |  |  | 143,300 |  |  | $ | 21.84 |  |  |  | 2.2 |  |  | $ | 6,419 |
Year Ended December 31, 2022: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of year |  |  | 353,250 |  |  | $ | 19.28 |  |  |  | 3.8 |  |  | $ | 23,525 |
Exercised |  |  | (70,500 | ) |  |  | 17.96 |  |  |  | 2.2 |  |  |  | 3,592 |
Forfeited |  |  | (2,750 | ) |  |  | 37.94 |  |  |  | 5.4 |  |  |  | 85 |
Outstanding at end of year |  |  | 280,000 |  |  | $ | 19.43 |  |  |  | 3.0 |  |  | $ | 14,088 |
Exercisable at December 31, 2022: |  |  | 220,500 |  |  | $ | 14.37 |  |  |  | 2.0 |  |  | $ | 12,279 |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
Range of Exercise Price |  |  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (In Thousands) |
$ | 14.00 - 15.00 |  |  |  | 2,000 |  |  |  | 14.32 |  |  |  | 1.7 |  |  |  | 141 |
| 15.00 - 16.00 |  |  |  | 12,250 |  |  |  | 15.76 |  |  |  | 0.1 |  |  |  | 845 |
| 17.00 - 18.00 |  |  |  | 13,500 |  |  |  | 17.17 |  |  |  | 0.3 |  |  |  | 912 |
| 18.00 - 19.00 |  |  |  | 4,000 |  |  |  | 18.44 |  |  |  | 0.8 |  |  |  | 265 |
| 19.00 - 20.00 |  |  |  | 12,000 |  |  |  | 19.16 |  |  |  | 1.1 |  |  |  | 787 |
| 34.00 - 35.00 |  |  |  | 2,000 |  |  |  | 34.09 |  |  |  | 4.1 |  |  |  | 101 |
| 35.00 - 36.00 |  |  |  | 26,500 |  |  |  | 35.63 |  |  |  | 3.8 |  |  |  | 1,301 |
| 38.00 - 39.00 |  |  |  | 5,700 |  |  |  | 38.26 |  |  |  | 2.1 |  |  |  | 265 |
| 41.00 - 42.00 |  |  |  | 1,000 |  |  |  | 41.21 |  |  |  | 3.1 |  |  |  | 45 |
| 43.00 - 44.00 |  |  |  | 1,500 |  |  |  | 43.80 |  |  |  | 3.5 |  |  |  | 61 |
|  |  |  |  | 80,450 |  |  | $ | 26.03 |  |  |  | 1.9 |  |  | $ | 4,723 |
Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] |
|  | Restricted Stock |  |  | PSU |
|  | Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Shares |  |  | Weighted Average Grant Date Fair Value |
Year Ended December 31, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested at beginning of year |  |  | 158,298 |  |  | $ | 58.08 |  |  |  | 31,944 |  |  | $ | 58.25 |
Granted |  |  | 54,794 |  |  |  | 68.95 |  |  |  | 20,469 |  |  |  | 59.07 |
Vested |  |  | (49,090 | ) |  |  | 46.04 |  |  |  | (18,653 | ) |  |  | 37.05 |
Forfeited |  |  | (18,165 | ) |  |  | 56.98 |  |  |  | (3,695 | ) |  |  | 70.58 |
Non-vested at end of year |  |  | 145,837 |  |  | $ | 66.35 |  |  |  | 30,065 |  |  | $ | 70.45 |
Year Ended December 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested at beginning of year |  |  | 141,580 |  |  | $ | 56.39 |  |  |  | 23,852 |  |  | $ | 54.16 |
Granted |  |  | 64,880 |  |  |  | 58.45 |  |  |  | 8,092 |  |  |  | 70.29 |
Vested |  |  | (35,163 | ) |  |  | 49.85 |  |  |  | - |  |  |  | - |
Forfeited |  |  | (12,999 | ) |  |  | 63.78 |  |  |  | - |  |  |  | - |
Non-vested at end of year |  |  | 158,298 |  |  | $ | 58.08 |  |  |  | 31,944 |  |  | $ | 58.25 |
Year Ended December 31, 2022: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested at beginning of year |  |  | 126,975 |  |  | $ | 42.28 |  |  |  | 12,437 |  |  | $ | 37.05 |
Granted |  |  | 53,974 |  |  |  | 83.24 |  |  |  | 11,415 |  |  |  | 72.81 |
Vested |  |  | (28,160 | ) |  |  | 43.27 |  |  |  | - |  |  |  | - |
Forfeited |  |  | (11,209 | ) |  |  | 58.82 |  |  |  | - |  |  |  | - |
Non-vested at end of year |  |  | 141,580 |  |  | $ | 56.39 |  |  |  | 23,852 |  |  | $ | 54.16 |

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