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Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Jul. 31, 2023
Apr. 30, 2023
Payables and Accruals [Abstract]    
Project costs $ 55 $ 181
Employee incentive payments 1,110 1,948
Accrued salary and benefits 260 52
Professional fees 8
Other 123 165
Accrued expenses total $ 1,556 $ 2,346