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Variable Interest Entity (Details 1) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total assets | $ 142,421 | $ 156,244
CCE [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total assets | 1,336 | 1,576
Total liabilities and noncontrolling interests | 1,336 | 1,576
CCE [Member] | Cash and cash equivalents [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total assets | 260 | 250
CCE [Member] | Trade accounts receivable [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total assets | 339 | 586
CCE [Member] | Prepaid expenses and other current assets [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total assets | 378 | 381
CCE [Member] | Other assets [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total assets | 359 | 359
CCE [Member] | Current liabilities [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total liabilities and noncontrolling interests | 453 | 467
CCE [Member] | Due to IDT Energy [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total liabilities and noncontrolling interests | 3,120 | 2,598
CCE [Member] | Noncontrolling interests [Member] |  |
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract] |  |
Total liabilities and noncontrolling interests | $ (2,237) | $ (1,489)

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- Definition The carrying amount of the consolidated Variable Interest Entity's liabilities and minority interest included in the reporting entity's statement of financial position. + References No definition available. + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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(11)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: 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(a)(12)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
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