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Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Jan. 31, 2023
Apr. 30, 2022
Payables and Accruals [Abstract]    
Project costs $ 363 $ 59
Contract loss reserve 328
Employee incentive payments 1,037 266
Accrued salary and benefits 50 60
Professional fees 55 30
Other 121 134
Accrued expenses total $ 1,626 $ 877