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Note 18 - Subsequent Events (Details Textual) - shares | 2 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Stock Repurchased and Retired During Period, Shares (in shares) |  | 1,674,161 | 434,381 | 245,534
Common Stock [Member] | Subsequent Event [Member] |  |  |  |
Stock Repurchased and Retired During Period, Shares (in shares) | 16,313 |  |  |

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