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Note 2 - Investments - Components of EAM's Investment Management Operations (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Oct. 31, 2023	Jul. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Revenues	$ 8,841		$ 9,610		$ 17,725	$ 19,353
Value Line’s non-voting revenues interest	4,046		2,721		7,726	5,337
EAM's net income	5,685	$ 5,887	3,488	$ 4,859	11,572	8,347
EAM Trust [Member]
Other income	160		(14)		316	103
Investment management fee waivers and reimbursements	40		114		87	162
12b-1 fee waivers	23		23		46	48
Value Line’s non-voting revenues interest	4,046		2,721		7,726	5,337
EAM's net income	1,168		548		2,290	1,030
EAM Trust [Member] | Investment Advice [Member]
Revenues	7,966		5,640		15,342	11,068
EAM Trust [Member] | Distribution and Shareholder Service [Member]
Revenues	$ 2,010		$ 1,600		$ 3,952	$ 3,179

X

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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