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Accounts Receivable, Unbilled Services and Deferred Revenue
 12 Months Ended
Apr. 30, 2019
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, 2019
 
April 30, 2018
 
 
 
 
Accounts receivable
$
1,982

 
$
1,837

Unbilled services
2,417

 
2,093

Total accounts receivable and unbilled services
4,399

 
3,930

Less allowance for doubtful accounts
(22
)
 
(13
)
Total accounts receivable, net
$
4,377

 
$
3,917


 
Deferred revenue was as follows (in thousands):
 
April 30, 2019
 
April 30, 2018
 
 
 
 
Deferred revenue
$
4,022

 
$
4,704



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