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Accounts Receivable (Tables)
3 Months Ended
Oct. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Accounts receivable, net consisted of:
(In thousands)
 
October 31, 2019
 
July 31, 2019
Advance charges receivable
 
$
307,738

 
$
280,835

Trade accounts receivable
 
87,467

 
89,274

Other receivables
 
4,488

 
2,098

 
 
399,693

 
372,207

Less: Allowance for doubtful accounts
 
(5,384
)
 
(4,942
)
Accounts receivable, net
 
$
394,309

 
$
367,265