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v3.23.1

Defined Contribution Plan (Details Narrative) $ in Millions | 1 Months Ended
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Apr. 30, 2023 USD ($)
401 (k) Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 1.1

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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. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_RetirementPlanNameAxis=IDT_FourHundreadAndOnekPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |