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Property, Plant, and Equipment (Details Narrative) - USD ($)
$ in Millions
12 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Jul. 31, 2022
Property, Plant and Equipment [Abstract]      
Disposal of property, plant and equipment $ 4.6   $ 4.2
Depreciation expense $ 19.1 $ 18.6 $ 16.8
Expenses for telephone equipment   $ 0.1