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Note 2 - Investments - Income From Securities Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2022
Jan. 31, 2021
Dividend income $ 234 $ 155 $ 640 $ 413
Interest income (2) (31) (1) (131)
Interest income 2 31 1 131
Investment gains/(losses) recognized on sales of equity securities during the period (19) 141 28 585
Unrealized gains/(losses) recognized on equity securities held at the end of the period (215) 1,456 94 1,964
Other (1) 2 (2) 0
Total investment gains/(losses) $ (3) $ 1,785 $ 759 $ 3,093