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Account Receivable, Contract Assets and Contract Liabilities (Tables)
 6 Months Ended
Oct. 31, 2022
Account Receivable Contract Assets And Contract Liabilities  
Schedule of Accounts Receivable, Contract Assets and Contract Liabilities

The following provides further details on the balance sheet accounts of accounts receivable, contract assets and contract liabilities from contracts with customers:

 

   October 31,
2022		   April 30,
2022		 
   (in thousands) 
Accounts receivable  $587   $482 
Contract assets   301    386 
Contract liabilities   1,462    129 
Schedule of Significant Changes in Contract assets and Contract Liabilities

Significant changes in the contract assets balances during the period were as follows:

 

   Six months ended October 31,
2022		 
   (in thousands) 
Transferred to receivables from contract assets recognized at the beginning of the period  $(132)
Revenue recognized and not billed as of the end of the period   47 
Net change in contract assets  $(85)

 

Significant changes in the contract liabilities balances during the period are as follows:

 

   Six months ended October 31,
2022		 
   (in thousands) 
     
Revenue recognized that was included in the contract liabilities balance as of the beginning of the period  $(129)
Payments collected for which revenue has not been recognized   1,462 
Net change in contract liabilities  $1,333