XML 75 R64.htm IDEA: XBRL DOCUMENT v3.20.4

Acquisitions (Details) $ / shares in Millions, $ in Millions	6 Months Ended
	Jan. 31, 2021	Feb. 02, 2021 $ / shares	Dec. 03, 2020 USD ($)	Dec. 11, 2019
Acquisitions (Details) [Line Items]
Contingent consideration, description	The contingent consideration of $0.5 million will be paid (a) no later than November 30, 2021 if the acquired company generates EBITDA of no less than $1.0 million between October 1, 2020 and September 30, 2021; or (b) no later than November 30, 2022 if the acquired company generates EBITDA of no less than $1.0 million between October 1, 2021 and September 30, 2022.
AcquiredMtuco [Member]
Acquisitions (Details) [Line Items]
Shares percentage			51.00%
Loan payable (in Dollars) | $			$ 0.1
AcquiredMtuco [Member] | Subsequent Event [Member]
Acquisitions (Details) [Line Items]
Purchase price (in Dollars per Share) | $ / shares		0.3
Ringsouth Europa, S.L. [Member]
Acquisitions (Details) [Line Items]
Shares percentage				100.00%
Call Option [Member] | AcquiredMtuco [Member]
Acquisitions (Details) [Line Items]
Percentage of shares			5.00%

X

- References

No definition available.

+ Details

Name:	idt_AcquisitionsDetailsLineItems
Namespace Prefix:	idt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Open option contracts written percentage of shares.

+ References

No definition available.

+ Details

Name:	idt_OpenOptionContractsWrittenPercentageOfShares
Namespace Prefix:	idt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents a description of such arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationArrangementsDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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(22))
-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 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16)(a)(2))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_LoansPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The exercise price of the open option contracts written on the investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13(Column E))
-URI http://asc.fasb.org/extlink&oid=120401592&loc=d3e611282-123010

+ Details

Name:	us-gaap_OpenOptionContractsWrittenExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=idt_AcquiredMtucoMember
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_BusinessAcquisitionAxis=idt_RingsouthEuropaSLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_OptionIndexedToIssuersEquityTypeAxis=us-gaap_CallOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: