XML 96 R83.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Schedule of Carrying Value of Equity Investments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jul. 31, 2022 | Jul. 31, 2021 | Jul. 31, 2020
Investments, Debt and Equity Securities [Abstract] |  |  |
Balance, beginning of period | $ 2,743 | $ 4,109 | $ 3,919
Redemption for Visa mandatory release assessment | (1,230) | (1,870) |
Adjustment for observable transactions involving a similar investment from the same issuer | (103) | 510 | 206
Upward adjustments |  |  | 3
Redemptions | (9) | (6) | (19)
Impairments |  |  |
BALANCE, END OF PERIOD | $ 1,401 | $ 2,743 | $ 4,109

X
- Definition Adjustment for observable transactions involving a similar investment from the same issuer. + References No definition available. + Details
Name: | IDT_AdjustmentForObservableTransactionsInvolvingSimilarInvestmentFromSameIssuer
Namespace Prefix: | IDT_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity Securities Without Readily Determinable Fair Value Redemptions Amount. + References No definition available. + Details
Name: | IDT_EquitySecuritiesWithoutReadilyDeterminableFairValueRedemptionsAmount
Namespace Prefix: | IDT_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Redemption for Visa mandatory release assessment + References No definition available. + Details
Name: | IDT_RedemptionForVisaMandatoryReleaseAssessment
Namespace Prefix: | IDT_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of impairment loss on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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