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INVESTMENTS IN AFFILIATED AND OTHER COMPANIES (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended | 36 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2015 | Jan. 31, 2015 | Dec. 31, 2013 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2017 | Oct. 31, 2017 | Oct. 31, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Feb. 28, 2015
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Investments in other company |  |  |  | $ 1,382 | $ 85 |  | $ 1,382 |  |  |  |  |
Share in gains (losses) of affiliated companies, net |  |  |  | $ 8,520 | $ (449) | $ (2,439) |  |  |  |  |  |
BRINGG Delivery Technologies Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method |  |  |  | 26.88% | 38.96% | 41.18% | 26.88% |  |  | 45.00% |  |
Payments to equity interest | $ 2,000 | $ 1,100 | $ 1,400 |  |  |  | $ 23,800 |  |  |  |  |
Share in gains (losses) of affiliated companies, net |  |  |  | $ 4,400 | $ 400 | $ 800 |  |  |  |  |  |
Ituran Road Track Monitoramen to De Veiculos Ltd a [Member] |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method |  |  |  |  |  |  |  |  |  |  |  | 50.00%
RTI URUGUAY S.A. ("RTI") [Member] |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method |  |  |  |  |  |  |  |  |  |  | 50.00% |
ITURAN ROAD TRACK ARGENTINA S.A [Member] |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method |  |  |  |  |  |  |  |  | 50.00% |  |  |
GLOBAL TELEMATIC SOLUTIONS HK, LIMITED ("HK') [Member] |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method |  |  |  |  |  |  |  | 50.00% |  |  |  |
Locationet [Member] |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage, equity method |  |  |  | 19.15% |  |  | 19.15% |  |  |  |  |
Investments in other company |  |  |  | $ 94 | $ 85 |  | $ 94 |  |  |  |  |
Mobile app development and visual sectors [Member] |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Investments in other company |  |  |  | $ 1,300 |  |  | $ 1,300 |  |  |  |  |

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