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Note 5 - Non-operating Income - Summary of Non-operating Income (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Dividends and net realized gains and losses on sales of securities		$ 1,724,000	$ 1,681,000	$ 3,780,000	$ 2,914,000
Interest income		2,648,000	1,794,000	5,186,000	3,349,000
Equity in earnings of unconsolidated investments		584,000	221,000	651,000	1,756,000
Gain on sale of unconsolidated company	$ 1,024,000	0	0	1,024,000	(0)
Total non-operating income		$ 4,956,000	$ 3,696,000	$ 10,641,000	$ 8,019,000

X

- Definition

The amount of dividends and other net realized gains and losses resulting from the sale of securities.

+ References

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- Definition

Represents the amount of gain (loss) from sale of an unconsolidated company.

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of interest income (expense) classified as nonoperating.

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Amount of income (expense) related to nonoperating activities, classified as other.

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