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Other Current Assets
 12 Months Ended
Apr. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Current Assets

(4) Other Current Assets

 

Other current assets consist of the following at April 30, 2021 and 2020:

 

    April 30, 2021     April 30, 2020  
      (in thousands)  
                 
Deposits   $ 68     $ 60  
Other receivables     21       2  
Prepaid insurance     194       124  
Prepaid offering costs     -       275  
Prepaid expenses- other     204       127  
    $ 487     $ 588