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Account Receivable, Contract Assets and Contract Liabilities (Tables)
 9 Months Ended
Jan. 31, 2023
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:

 

   January 31,
2023		   April 30,
2022		 
   (in thousands) 
Accounts receivable  $706   $482 
Contract assets   93    386 
Contract liabilities   1,334    129 
Schedule of Significant Changes in Contract assets and Contract Liabilities

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

 

   Nine months ended
January 31,
2023		 
   (in thousands) 
Transferred to receivables from contract assets recognized at the beginning of the period  $(1,646)
Revenue recognized and not billed as of the end of the period   1,353 
Net change in contract assets  $(293)
 

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

   Nine months ended
January 31,
2023		 
    (in thousands) 
      
Revenue recognized that was included in the contract liabilities balance as of the beginning of the period  $(447)
Payments collected for which revenue has not been recognized   1,652 
Net change in contract liabilities  $1,205