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Accounts Receivable Accounts Receivable (Details) - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2019	Jul. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue, Practical Expedient, Financing Component [true false]	false
Accounts Receivable, Gross, Current	$ 399,101	$ 357,045
Less: Allowance for doubtful accounts	5,540	5,444
Accounts receivable, net	393,561	351,601
Advance charges receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	312,165	230,092
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	84,290	125,255
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	$ 2,646	$ 1,698

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+ References

No definition available.

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Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

+ References

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+ References

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-Publisher FASB
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