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Note 2 - Investments (Tables) | 3 Months Ended
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Jul. 31, 2019
Notes Tables |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] |
|  |  |  |  |  | Gross Unrealized |  |  |  |  |
($ in thousands) |  | Cost |  |  | Holding Gains |  |  | Fair Value |
ETFs - equities |  | $ | 8,940 |  |  | $ | 2,172 |  |  | $ | 11,112 |
|  |  |  |  |  | Gross Unrealized |  |  |  |  |
($ in thousands) |  | Cost |  |  | Holding Gains |  |  | Fair Value |
ETFs - equities |  | $ | 8,541 |  |  | $ | 2,081 |  |  | $ | 10,622 |
|  | Amortized |  |  | Gross Unrealized |  |  |  |  |
($ in thousands) |  | Historical Cost |  |  | Holding Gains |  |  | Fair Value |
Maturity |  |  |  |  |  |  |  |  |  |  |  |
Due within 1 year |  | $ | 6,411 |  |  | $ | 35 |  |  | $ | 6,446 |
Due 1 year through 5 years |  |  | 5,000 |  |  |  | 27 |  |  |  | 5,027 |
Total investment in government debt securities |  | $ | 11,411 |  |  | $ | 62 |  |  | $ | 11,473 |
|  | Amortized |  |  | Gross Unrealized |  |  |  |  |
($ in thousands) |  | Historical Cost |  |  | Holding Gains |  |  | Fair Value |
Maturity |  |  |  |  |  |  |  |  |  |  |  |
Due within 1 year |  | $ | 6,913 |  |  | $ | 33 |  |  | $ | 6,946 |
Due 1 year through 5 years |  |  | 4,250 |  |  |  | 10 |  |  |  | 4,260 |
Total investment in government debt securities |  | $ | 11,163 |  |  | $ | 43 |  |  | $ | 11,206 |
Investment Income [Table Text Block] |
|  | Three Months Ended July 31, |
($ in thousands) |  | 2019 |  |  | 2018 |
Dividend income |  | $ | 70 |  |  | $ | 67 |
Interest income |  |  | 71 |  |  |  | 35 |
Other |  |  | - |  |  |  | 12 |
Total income from securities transactions, net |  | $ | 141 |  |  | $ | 114 |
Investment Holdings, Other than Securities [Table Text Block] |
|  | Three Months Ended July 31, |
($ in thousands) (unaudited) |  | 2019 |  |  | 2018 |
Investment management fees earned from the Value Line Funds, net of waivers shown below |  | $ | 5,147 |  |  | $ | 4,109 |
12b-1 fees and other fees, net of waivers shown below |  | $ | 1,979 |  |  | $ | 1,704 |
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) |  | $ | 566 |  |  | $ | 606 |
Summary Investment Holdings [Table Text Block] |
|  | July 31, |  |  | April 30, |
($ in thousands) |  | 2019 |  |  | 2019 |
|  | (unaudited) |  |  |  |  |
EAM's total assets |  | $ | 61,366 |  |  | $ | 60,683 |
EAM's total liabilities (1) |  |  | (4,478 | ) |  |  | (3,547 | )
EAM's total equity |  | $ | 56,888 |  |  | $ | 57,136 |

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