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Schedule of Acquisition Date Fair Value of Consideration (Details) - USD ($) $ in Thousands |  |  | 9 Months Ended
--- | --- | --- | ---
Dec. 03, 2020 | Dec. 11, 2019 | Apr. 30, 2021 | Apr. 30, 2020
Business Acquisition [Line Items] |  |  |  |
Cash paid, net of cash acquired |  |  | $ 2,656 | $ 450
IDT International Telecom, Inc [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash paid | $ 2,732 |  |  |
Cash acquired | (344) |  |  |
Cash paid, net of cash acquired | 2,388 |  |  |
Contingent consideration | 393 |  |  |
Total fair value of consideration, net of cash acquired | $ 2,781 |  |  |
Net2phone, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash paid |  | $ 450 |  |
Contingent consideration |  | 375 |  |
Total fair value of consideration |  | $ 825 |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
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