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Property and Equipment (Tables)
 12 Months Ended
Apr. 30, 2019
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and equipment consisted of the following at April 30, 2019 and 2018 (in thousands):
 
2019
 
2018
Buildings and leasehold improvements
$
16,724

 
$
15,325

Computer equipment and purchased software
11,235

 
11,692

Office furniture and equipment
4,953

 
4,661

 
32,912

 
31,678

Accumulated depreciation and amortization
(29,327
)
 
(28,644
)
 
$
3,585

 
$
3,034