Note 10 - Accounting for the Costs of Computer Software Developed for Internal Use (Details Textual) - USD ($) |
3 Months Ended | |
|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
|
| Capitalized Computer Software, Amortization | $ 11,000 | $ 14,000 |
| Capitalized Computer Software, Additions | $ 0 | $ 0 |
| Minimum [Member] | ||
| Finite-Lived Intangible Asset, Useful Life (Year) | 3 years | |
| Maximum [Member] | ||
| Finite-Lived Intangible Asset, Useful Life (Year) | 5 years | |