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Accounts Receivable, Unbilled Services and Deferred Revenue
 12 Months Ended
Apr. 30, 2022
Receivables [Abstract]  
Accounts Receivable, Unbilled Services and Deferred Revenue Accounts Receivable, Unbilled Services and Deferred Revenue
Accounts receivable and unbilled services were as follows (in thousands):
April 30, 2022April 30, 2021
  
Accounts receivable$6,037 $4,304 
Unbilled services4,106 3,020 
Total accounts receivable and unbilled services10,143 7,324 
Less: allowance for doubtful accounts(630)(338)
Total accounts receivable, net$9,513 $6,986 
Deferred revenue was as follows (in thousands):
April 30, 2022April 30, 2021
  
Deferred revenue$11,071 $6,256 
Deferred revenue is shown as a current liability on the Company's balance sheet.

As of April 30, 2020 unbilled services was $2.4 million and deferred revenue was $5.8 million.