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Accounts Receivable (Tables)
9 Months Ended
Apr. 30, 2021
Accounts Receivable [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Accounts receivable, net consisted of:
(In thousands)April 30, 2021July 31, 2020
Advance charges receivable$337,758 $260,196 
Trade accounts receivable99,584 94,281 
Other receivables2,855 2,120 
440,197 356,597 
Less: Allowance for credit loss(5,324)(6,390)
Accounts receivable, net$434,873 $350,207