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Note 22 - Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Shares |  |  | Weighted-Average Exercise Price Per Share |  |  | Aggregate Intrinsic Value (in millions) |
Options outstanding, January 1, 2021 |  |  | 1,162,321 |  |  | $ | 20.03 |  |  | $ | - |
Exercised |  |  | (315,750 | ) |  | $ | 19.19 |  |  | $ | 1.1 |
Forfeited |  |  | (357,816 | ) |  | $ | 19.01 |  |  |  |  |
Options outstanding, December 31, 2021 |  |  | 488,755 |  |  | $ | 21.48 |  |  | $ | 1.5 |
Exercised |  |  | (205,871 | ) |  | $ | 20.56 |  |  | $ | 0.8 |
Forfeited |  |  | (750 | ) |  | $ | 19.70 |  |  |  |  |
Options outstanding, December 31, 2022 |  |  | 282,134 |  |  | $ | 22.13 |  |  | $ | - |
Exercised |  |  | (173,038 | ) |  | $ | 21.54 |  |  | $ | 0.1 |
Forfeited |  |  | (109,096 | ) |  | $ | 21.61 |  |  |  |  |
Options outstanding, December 31, 2023 |  |  | - |  |  | $ | - |  |  | $ | - |
Options exercisable (fully vested) |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2021 |  |  | 488,755 |  |  | $ | 21.48 |  |  | $ | 1.5 |
December 31, 2022 |  |  | 282,134 |  |  | $ | 22.13 |  |  | $ | - |
December 31, 2023 |  |  | - |  |  | $ | - |  |  | $ | - |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Restricted stock outstanding as of January 1, |  |  | 2,605,970 |  |  |  | 2,347,608 |  |  |  | 2,394,825 |
Granted (1) |  |  | 893,880 |  |  |  | 819,090 |  |  |  | 754,560 |
Vested |  |  | (740,866 | ) |  |  | (511,772 | ) |  |  | (759,665 | )
Forfeited |  |  | (12,868 | ) |  |  | (48,956 | ) |  |  | (42,112 | )
Restricted stock outstanding as of December 31, |  |  | 2,746,116 |  |  |  | 2,605,970 |  |  |  | 2,347,608 |
Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block] |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Performance share awards outstanding as of January 1, |  |  | 1,004,040 |  |  |  | 1,052,100 |  |  |  | 913,800 |
Granted (1) |  |  | 531,200 |  |  |  | 458,660 |  |  |  | 545,380 |
Vested (2) |  |  | (545,380 | ) |  |  | (506,720 | ) |  |  | (407,080 | )
Performance share awards outstanding as of December 31, |  |  | 989,860 |  |  |  | 1,004,040 |  |  |  | 1,052,100 |
Performance Shares [Member] |
Notes Tables |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Stock price |  | $ | 21.30 |  |  | $ | 24.27 |  |  | $ | 17.87 |
Dividend yield (1) |  |  | 0 | % |  |  | 0 | % |  |  | 0 | %
Risk-free rate |  |  | 4.38 | % |  |  | 1.72 | % |  |  | 0.20 | %
Volatility (2) |  |  | 44.89 | % |  |  | 49.07 | % |  |  | 48.41 | %
Term of the award (years) |  |  | 2.87 |  |  |  | 2.87 |  |  |  | 2.86 |

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