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Restructuring Charges Restructuring Charges (Tables)
 6 Months Ended
Oct. 31, 2018
Restructuring and Related Activities [Abstract]  
Restructuring Charges Reserve
A reserve for restructuring charges of $1.2 million is included in accrued compensation and related expenses in the consolidated balance sheets.
Restructuring reserve balance as of May 1, 2018
$
—
Expense
 
2,035
Payments
 
(863)
Restructuring reserve balance as of October 31, 2018
$
1,172