XML 120 R106.htm IDEA: XBRL DOCUMENT
v3.20.2

Related Party Transactions (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Jun. 02, 2020 | Jul. 31, 2020 | Jul. 31, 2019 | Aug. 31, 2020
Related Party Transactions (Details) [Line Items] |  |  |  |
Lease expiration description |  | The latest lease, which became effective November 1, 2012, had a one-year term with a one-year renewal option. |  |
Annual rent payment | $ 18,600 | $ 60,900 |  |
Outstanding net loan receivable from employees |  | $ 200,000 | $ 200,000 |
Zedge Inc [Member] |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |
Shares held (in Shares) |  | 42,282 | 42,282 |
Jonas Media Group [Member] | Subsequent Event [Member] |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |
Receivable from subsidiaries included in other current assets |  |  |  | $ 16,000
Receivable from subsidiaries included in adjusted amount |  |  |  | $ (14,000)
Mason and Co [Member] |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |
Commissions and fees from payment by company |  | $ 63,000 | $ 24,000 |
Rafael Spin Off [Member] |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |
Cost and expenses related to services |  | 400,000 | 400,000 |
Cash collected from third party tenants |  | 200,000 |  |
Receivable from subsidiaries included in other current assets |  | $ 50,000 | $ 100,000 |
Shares held (in Shares) |  | 27,806 | 27,419 |
Jonas Media Group [Member] |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |
Receivable from subsidiaries included in other current assets |  | $ 30,000 | $ 15,000 |
Receivable from subsidiaries included in services |  | 15,000 | 15,000 |
IGM Brokerage Corp. [Member] |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |
Commissions and fees from payment by company |  |  | 29,000 |
Genie and Subsidiaries [Member] |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |
Cost and expenses related to services |  | 1,100,000 | 1,000,000.0 |
Receivable from subsidiaries included in other current assets |  | $ 200,000 | $ 200,000 |

X
- Definition Description of lease expiration. + References No definition available. + Details
Name: | idt_LeaseExpirationDescription
Namespace Prefix: | idt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The Number of related party shares received in connection with restricted stock. + References No definition available. + Details
Name: | idt_NumberOfRelatedPartySharesReceivesInConnectionWithRestrictedStock
Namespace Prefix: | idt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This amount for related party transaction billings adjustment to related party for services. + References No definition available. + Details
Name: | idt_RelatedPartyTransactionBillingsAdjustmentToRelatedPartyForServices
Namespace Prefix: | idt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Related party transaction billings to related party for services. + References No definition available. + Details
Name: | idt_RelatedPartyTransactionBillingsToRelatedPartyForServices
Namespace Prefix: | idt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related party transaction lease annual rent payments to related party. + References No definition available. + Details
Name: | idt_RelatedPartyTransactionLeaseAnnualRentPaymentsToRelatedParty
Namespace Prefix: | idt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Related party transactions cash collected from third party tenants. + References No definition available. + Details
Name: | idt_RelatedPartyTransactionsCashCollectedFromThirdPartyTenants
Namespace Prefix: | idt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | idt_RelatedPartyTransactionsDetailsLineItems
Namespace Prefix: | idt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Costs of sales and operating expenses for the period incurred from transactions with related parties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_CostsAndExpensesRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amounts due from an Entity employee, not to include stockholders or officers, which are usually due within 1 year (or 1 business cycle). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864 + Details
Name: | us-gaap_DueFromEmployeesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount receivable from related parties classified as other, due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
Name: | us-gaap_DueFromOtherRelatedPartiesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=idt_ZedgeIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=idt_JonasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=idt_MasonAndCompanyConsultingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=idt_RafaelSpinOffMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=idt_JonasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=idt_IgmBrokerageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=idt_GenieAndSubsidiarieMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |