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Accrued Expenses (Tables)
6 Months Ended
Oct. 31, 2021
Payables and Accruals [Abstract]  
Schedule of Accrued Expenses

Accrued expenses consisted of the following at October 31, 2021 and April 30, 2021:

 

 

   October 31, 2021   April 30, 2021 
    (in thousands)      
Project costs  $257   $368 
Contract loss reserve   328    328 
Employee incentive payments   275    283 
Accrued salary and benefits   426    631 
Professional fees   241    200 
Other   49    71 
Accrued expenses total   $1,576   $1,881