The carrying amounts of cash and cash equivalent substantially restricted.

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Commitments and contingencies.

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Date the credit facility terminates, in CCYY-MM-DD format.

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In certain circumstances, the company is required to provide performance bonds in connection with its contractual commitments. Company has indemnified the surety for any expenses paid out under these performance bonds.

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The current portion of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understandings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount of general expenses not normally included in Other Operating Costs and Expenses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
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Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

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No definition available.

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Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2017	Jan. 31, 2016	Jul. 31, 2016
Commitments and Contingencies (Textual)
Purchase commitment of company	$ 1,700		$ 1,700
Letters of credit outstanding	100		100
Performance bonds outstanding	13,800		13,800
Refundable customer deposits	87,468		87,468		$ 95,843
Legal fees	889	$ 326	1,088	$ 326
IDT Financial Services Ltd. [Member]
Commitments and Contingencies (Textual)
Refundable customer deposits	87,500		87,500		95,800
IDT Payment Services and IDT Financial Services Ltd. [Member]
Commitments and Contingencies (Textual)
Restricted cash and cash equivalents	$ 10,700		$ 10,700		$ 16,000
Expire on January 31, 2018 [Member]
Commitments and Contingencies (Textual)
Letters of credit expiration date			Jan. 31, 2018