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v3.23.3

Schedule of Investments and Unrealized Gains/Losses (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2023 | Apr. 30, 2023
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 15,427 | $ 27,790
Unrealized Gains (Losses) | 114 | 158
Market Value | 15,541 | 27,948
Corporate Bonds [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 6,911 | 14,776
Unrealized Gains (Losses) | 56 | 100
Market Value | 6,967 | 14,876
Government Bonds and Notes [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 6,692 | 9,188
Unrealized Gains (Losses) | 35 | 33
Market Value | 6,727 | 9,221
Government Agency [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 1,824 | 3,826
Unrealized Gains (Losses) | 23 | 25
Market Value | $ 1,847 | $ 3,851

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