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Note 2 - Investments - Components of EAM's Investment Management Operations (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jul. 31, 2019 | Jul. 31, 2018
Revenues |  | $ 9,617 | $ 8,971
Value Line’s non-voting revenues interest |  | 2,588 | 1,968
EAM's net income (1) |  | 3,690 | 3,104
EAM Trust [Member] |  |  |
Other income |  | 53 | 71
Investment management fee waivers and reimbursements |  | 109 | 111
12b-1 fee waivers |  | 173 | 159
Value Line’s non-voting revenues interest |  | 2,588 | 1,968
EAM's net income (1) | [1] | 566 | 606
EAM Trust [Member] | Investment Advice [Member] |  |  |
Revenues |  | 5,147 | 4,109
EAM Trust [Member] | Distribution and Shareholder Service [Member] |  |  |
Revenues |  | $ 1,979 | $ 1,704
[1] | Represents EAM's net income, after giving effect to Value Line's non-voting revenues interest, but before distributions to voting profits interest holders and to the Company in respect of its 50% non-voting profits interest.

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