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Note 10 - Distributions (Details Textual) - $ / shares | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ 0.30 | $ 0.30 | $ 0.90 | $ 0.90 | $ 1.25
Earnings Per Share, Basic, Total (in dollars per share) | 0.43 | $ 0.40 | $ 1.06 | $ 1.02 |
Earnings Per Share, Basic, Undistributed (in dollars per share) | $ 0.67 |  |  |  |

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