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Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands | Oct. 31, 2024 | Apr. 30, 2024 | Jan. 31, 2024
--- | --- | --- | ---
Property, Plant and Equipment, Net | $ 35,652 | $ 36,788 | $ 37,620
Accounts Payable, Current | $ 20,788 | 23,249 | $ 25,323
Revision of Prior Period, Adjustment [Member] |  |  |
Property, Plant and Equipment, Net |  | (1,423) |
Accounts Payable, Current |  | $ (1,423) |

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