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Note 10 - Distributions (Details Textual) - $ / shares
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) $ 0.33  
Earnings Per Share, Basic (in dollars per share) 0.46 $ 0.26
Earnings Per Share, Basic, Undistributed (in dollars per share) $ 0.81