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Business combination recognized identifiable assets acquired and liabilities assumed Customer relationships.

No definition available.

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Business combination recognized identifiable assets acquired and liabilities assumed liabilities other.

No definition available.

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Business combination recognized identifiable assets acquired and liabilities assumed non-complete agreements

No definition available.

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Business combination recognized identifiable assets acquired and liabilities assumed operating lease liability current.

No definition available.

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Namespace Prefix:	IDT_
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Business combination recognized identifiable assets acquired and liabilities assumed operating lease liability noncurrent.

No definition available.

Name:	IDT_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityNoncurrent
Namespace Prefix:	IDT_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Business combination recognized identifiable assets acquired and liabilities assumed operating lease right of use asset.

No definition available.

Name:	IDT_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset
Namespace Prefix:	IDT_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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.

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-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
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Period Type:	duration

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
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-Topic 350
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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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-Topic 350
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-Topic 942
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