XML 40 R38.htm IDEA: XBRL DOCUMENT
v3.20.1

Revenue Recognition (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2020 | Jan. 31, 2019
Outside the United States: |  |  |  |
Total outside the United States | $ 104,325 | $ 116,133 | $ 217,382 | $ 238,895
Revenues, Total | 323,890 | 349,473 | 664,089 | 711,789
United States [Member] |  |  |  |
Outside the United States: |  |  |  |
Revenues, Total | 219,565 | 233,340 | 446,707 | 472,894
United Kingdom [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 36,154 | 48,947 | 71,950 | 99,427
Netherlands [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 49,692 | 48,057 | 104,634 | 98,979
Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 18,479 | 19,129 | 40,798 | 40,489
Telecom & Payment Services [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 99,990 | 112,704 | 208,953 | 232,929
Revenues, Total | 310,980 | 337,950 | 638,552 | 689,799
Telecom & Payment Services [Member] | United States [Member] |  |  |  |
Outside the United States: |  |  |  |
Revenues, Total | 210,990 | 225,246 | 429,599 | 456,870
Telecom & Payment Services [Member] | United Kingdom [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 36,151 | 48,939 | 71,943 | 99,411
Telecom & Payment Services [Member] | Netherlands [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 49,692 | 48,057 | 104,634 | 98,979
Telecom & Payment Services [Member] | Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 14,147 | 15,708 | 32,376 | 34,539
net2phone [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 4,335 | 3,429 | 8,429 | 5,966
Revenues, Total | 12,910 | 11,523 | 25,537 | 21,990
net2phone [Member] | United States [Member] |  |  |  |
Outside the United States: |  |  |  |
Revenues, Total | 8,575 | 8,094 | 17,108 | 16,024
net2phone [Member] | United Kingdom [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 3 | 8 | 7 | 16
net2phone [Member] | Netherlands [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States |  |  |  |
net2phone [Member] | Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | $ 4,332 | $ 3,421 | $ 8,422 | $ 5,950

X
- Definition Amount of revenues from foreign customers. + References No definition available. + Details
Name: | idt_RevenuesFromForeignCustomers
Namespace Prefix: | idt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_NL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=idt_OtherCountriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=idt_TelecomAndPaymentServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=idt_NetTwoPhoneUnifiedCommunicationsAsServiceSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |