XML 97 R78.htm IDEA: XBRL DOCUMENT v3.8.0.1

Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Indefinite-lived Intangible Assets [Line Items]
Beginning Balance	$ 11,218	$ 14,388
Foreign currency translation adjustments	108	(786)
Zedge Spin-Off		(2,384)
Ending Balance	11,326	11,218
Telecom Platform Services [Member]
Indefinite-lived Intangible Assets [Line Items]
Beginning Balance	11,218	11,181
Foreign currency translation adjustments	108	37
Zedge Spin-Off
Ending Balance	11,326	11,218
All Other (Zedge) [Member]
Indefinite-lived Intangible Assets [Line Items]
Beginning Balance		3,207
Foreign currency translation adjustments		(823)
Zedge Spin-Off		(2,384)
Ending Balance

X

- Definition

Goodwill written off related to spin off of business unit.

+ References

No definition available.

+ Details

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Namespace Prefix:	idt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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X

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Namespace Prefix:
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X

- Details

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