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Other Current Assets
 12 Months Ended
Apr. 30, 2020
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, 2020 and 2019:

 

    April 30, 2020     April 30, 2019  
    (in thousands)  
             
Deposits   $ 60     $ 63  
Other receivables     2       44  
Prepaid insurance     124       93  
Prepaid offering costs     275       144  
Prepaid expenses- other     127       193  
    $ 588     $ 537