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Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Jul. 31, 2022
Accounting Policies [Abstract]  
Schedule of Cash and Cash Equivalents

   July 31, 2022   April 30, 2022 
   (in thousands) 
         
Checking and savings accounts  $2,029   $1,815 
Money market account   7,147    6,070 
   $9,176   $7,885 
Schedule of Cash and Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Consolidated Balance Sheets that total to the same amounts shown in the Consolidated Statements of Cash Flows.

           
   July 31, 2022   April 30, 2022 
   (in thousands) 
Cash and cash equivalents  $9,176   $7,885 
Restricted cash- short term   258    258 
Restricted cash- long term   219    219 
Cash, cash equivalents, restricted cash and restricted cash equivalents  $9,653   $8,362 
Schedule of Investments and Unrealized Gains/Losses

The following table summarizes the Company’s marketable securities as of July 31, 2022:

 

Category (in thousands)  Market Value   Unrealized
Gains (Losses)		   Adjusted Cost 
Corporate Bonds  $31,853   $151  $32,004 
Government Bonds & Notes   7,986    

15

   8,001 
Government Agency   2,498    11   2,509 
Accrued Interest   311    

(101

)   210 
Total Marketable Securities  $42,648   $(76)  $42,724