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Customer Receivables (Tables)
3 Months Ended
Jul. 31, 2021
Accounts Receivable, after Allowance for Credit Loss [Abstract]  
Components of Customer Receivables
The components of customer receivables were: 
 July 31,April 30,
(in thousands)20212021
Gross customer receivables$139,498 $156,187 
Less:
Allowance for doubtful accounts(220)(331)
Allowance for returns and discounts(8,542)(8,990)
Net customer receivables$130,736 $146,866