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Accounts Receivable, Unbilled Services and Deferred Revenue
12 Months Ended
Apr. 30, 2021
Receivables [Abstract]  
Accounts Receivable, Unbilled Services and Deferred Revenue Accounts Receivable, Unbilled Services and Deferred RevenueAccounts receivable and unbilled services were as follows (in thousands):
April 30, 2021April 30, 2020
  
Accounts receivable$4,304 $2,655 
Unbilled services3,020 2,404 
Total accounts receivable and unbilled services7,324 5,059 
Less: allowance for doubtful accounts(338)(289)
Total accounts receivable, net$6,986 $4,770 
Deferred revenue was as follows (in thousands):
April 30, 2021April 30, 2020
  
Deferred revenue$6,256 $5,815 

Deferred revenue is shown as a current liability on the Company's balance sheet.