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Restructuring Charges Restructuring Charges (Tables)
 12 Months Ended
Apr. 30, 2021
Restructuring and Related Activities [Abstract]  
Restructuring Charges Reserve
A reserve for restructuring charges is included in accrued compensation and related expenses in the consolidated balance sheets as of April 30, 2021 and 2020 which relates to employee termination costs accrued but not yet paid as follows:
APRIL 30
(in thousands)20212020
Restructuring reserve balance at May 1$189 $387 
Expense1,739 (18)
Payments and adjustments(1,789)(180)
Restructuring reserve balance at April 30$139 $189