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Note 2 - Investments (Tables) | 3 Months Ended
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Jul. 31, 2024
Notes Tables |
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] |
($ in thousands) |  | Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
ETFs - equities |  | $ | 16,093 |  |  | $ | 5,801 |  |  | $ | (170 | ) |  | $ | 21,724 |
($ in thousands) |  | Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
ETFs - equities |  | $ | 11,663 |  |  | $ | 4,685 |  |  | $ | (4 | ) |  | $ | 16,344 |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  | Amortized |  |  | Gross Unrealized |  |  | Gross Unrealized |  |  |  |  |
($ in thousands) |  | Historical Cost |  |  | Holding Gains |  |  | Holding Losses |  |  | Fair Value |
Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due within 1 year |  | $ | 28,992 |  |  | $ | 9 |  |  | $ | (20 | ) |  | $ | 28,981 |
Due 1 year through 5 years |  |  | 5,032 |  |  |  | - |  |  |  | (85 | ) |  |  | 4,947 |
Total investment in government debt securities |  | $ | 34,024 |  |  | $ | 9 |  |  | $ | (105 | ) |  | $ | 33,928 |
|  | Amortized |  |  | Gross Unrealized |  |  | Gross Unrealized |  |  |  |  |
($ in thousands) |  | Historical Cost |  |  | Holding Gains |  |  | Holding Losses |  |  | Fair Value |
Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due within 1 year |  | $ | 42,843 |  |  | $ | 4 |  |  | $ | (61 | ) |  | $ | 42,786 |
Due within 1 year through 5 years |  |  | 5,088 |  |  | $ | - |  |  |  | (263 | ) |  |  | 4,825 |
Total investment in government debt securities |  | $ | 47,931 |  |  | $ | 4 |  |  | $ | (324 | ) |  | $ | 47,611 |
Investment Income [Table Text Block] |
|  | Three Months Ended July 31, |
($ in thousands) |  | 2024 |  |  | 2023 |
Dividend income |  | $ | 147 |  |  | $ | 145 |
Interest income |  |  | 545 |  |  |  | 389 |
Investment gains/(losses) recognized on sales of equity securities during the period |  |  | - |  |  |  | 11 |
Unrealized gains/(losses) recognized on equity securities held at the end of the period |  |  | 950 |  |  |  | 210 |
Other |  |  | 67 |  |  |  | - |
Total investment gains/(losses) |  | $ | 1,709 |  |  | $ | 755 |
Investment Holdings, Other than Securities [Table Text Block] |
|  | Three Months Ended July 31, |
($ in thousands) (unaudited) |  | 2024 |  |  | 2023 |
Investment management fees earned from the Value Line Funds, net of waivers shown below |  | $ | 7,376 |  |  | $ | 5,428 |
12b-1 fees and other fees, net of waivers |  | $ | 1,942 |  |  | $ | 1,579 |
Other income |  | $ | 156 |  |  | $ | 117 |
Investment management fee waivers and reimbursements |  | $ | 47 |  |  | $ | 48 |
12b-1 fee waivers |  | $ | 23 |  |  | $ | 25 |
Value Line’s non-voting revenues interest |  | $ | 3,680 |  |  | $ | 2,616 |
EAM's net income (1) |  | $ | 1,122 |  |  | $ | 482 |
Summary Investment Holdings [Table Text Block] |
|  | July 31, |  |  | April 30, |
($ in thousands) |  | 2024 |  |  | 2024 |
|  | (unaudited) |  |  |  |  |
EAM's total assets |  | $ | 63,126 |  |  | $ | 63,076 |
EAM's total liabilities (1) |  |  | (6,182 | ) |  |  | (5,881 | )
EAM's total equity |  | $ | 56,944 |  |  | $ | 57,195 |

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