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Summary of Significant Accounting Policies (Tables)
 9 Months Ended
Jan. 31, 2023
Accounting Policies [Abstract]  
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.

 

   January 31,
2023		   April 30,
2022		 
   (in thousands) 
Cash and cash equivalents  $10,920   $7,885 
Restricted cash- short term   65    258 
Restricted cash- long term   154    219 
Cash, cash equivalents, restricted cash and restricted cash equivalents  $11,139   $8,362 
Schedule of Investments and Unrealized Gains/Losses

The following table summarizes the Company’s short term investments as of January 31, 2023:

 

Category  Amortized Cost   Unrealized
Gains (Losses)		   Market Value 
Corporate Bonds  $18,554   $54   $18,608 
Government Bonds & Notes   8,079   $(22)   8,057 
Government Agency   3,372   $419    3,791 
Total Short term investments  $30,005   $451   $30,456 
Schedule of Revenue Recognizes From Operating Lease Arrangements

The Company recognizes revenue from operating lease arrangements generally on a straight-line basis over the lease term, or as agreed upon in-use days are utilized, which is presented in Revenues in the Consolidated Statement of Operations. The below table represents the total revenue recognized under ASC 606 and ASC 842 for the three and nine months ended January 31, 2023 and 2022.

 

    Three months ended January 31, 2023   Three months ended January 31, 2022 
    ASC 606   ASC 842   Total   ASC 606   ASC 842   Total 
    (in thousands)   (in thousands) 
Revenue   $559   $175   $734   $484   $—   $484 

 

    Nine months ended January 31, 2023   Nine months ended January 31, 2022 
    ASC 606   ASC 842   Total   ASC 606   ASC 842   Total 
    (in thousands)   (in thousands) 
Revenue   $1,562   $190   $1,752   $1,003   $—   $1,003