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Note 6 - Non-operating Income - Summary of Non-operating Income (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dividends and net realized gains and losses on sales of securities $ 1,681 $ 1,304 $ 2,914 $ 3,057
Interest income 1,794 1,207 3,349 2,199
Equity in earnings of unconsolidated investments 221 10 1,756 464
Total non-operating income $ 3,696 $ 2,521 $ 8,019 $ 5,720