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Operating Segment and Geographic Information (Tables)
 12 Months Ended
Apr. 30, 2017
Segment Reporting [Abstract]  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Revenue by geography is based on the billing address of the customer. The following table presents the Company’s revenue from continuing operations by geographic region for the periods presented (in thousands):
 
Year Ended April 30,
 
2017
 
2016
 
2015
Revenue by geographic location for continuing operations:
 
 
 
 
 
Americas (1)
$
149,330

 
$
150,758

 
$
146,086

EMEA (2)
44,529

 
42,620

 
38,101

Other
7,376

 
6,388

 
6,994

Total revenues from continuing operations
$
201,235

 
$
199,766

 
$
191,181

(1)
United States, Canada and Brazil
(2)
Europe, the Middle East and Africa