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Other Income And Other Expenses (Tables)
 12 Months Ended
Apr. 30, 2019
Other Income and Expenses [Abstract]  
Schedule of Other Interest (Expense), net
The following table shows the components of other income (expense), net:
(in 000s)
 
Year ended April 30,
 
2019

 
2018

 
2017

Interest income
 
16,512

 
6,861

 
3,830

Foreign currency gains (losses), net
 
(233
)
 
(165
)
 
(1
)
Other, net
 
140

 
(642
)
 
2,425

 
 
$
16,419

 
$
6,054

 
$
6,254