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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Relevant Exchange Rates) (Details) | 12 Months Ended
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Dec. 31, 2014 Israel [Member] | Dec. 31, 2013 Israel [Member] | Dec. 31, 2012 Israel [Member] | Dec. 31, 2014 Brazil [Member] | Dec. 31, 2013 Brazil [Member] | Dec. 31, 2012 Brazil [Member] | Dec. 31, 2014 Israeli CPI [Member] | Dec. 31, 2013 Israeli CPI [Member] | Dec. 31, 2012 Israeli CPI [Member]
Dollar Exchange Rate of Relevant Currencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Exchange rate of one US dollar | 3.889us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_IL | 3.471us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_IL | 3.733us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_IL | 2.6562us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_BR | 2.3426us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_BR | 2.0435us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_BR | 113.96us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = itrn_IsraeliConsumerPriceIndexMember | [1] | 114.18us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = itrn_IsraeliConsumerPriceIndexMember | [1] | 112.15us-gaap_ForeignCurrencyExchangeRateTranslation1 / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = itrn_IsraeliConsumerPriceIndexMember | [1]
Increase (decrease) during the year: Exchange rate of one US dollar | 12.04%itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_IL | (7.02%)itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_IL | (2.30%)itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_IL | 13.39%itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_BR | (14.63%)itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_BR | (8.94%)itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = country_BR | (0.20%)itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = itrn_IsraeliConsumerPriceIndexMember | [1] | 1.80%itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = itrn_IsraeliConsumerPriceIndexMember | [1] | 1.60%itrn_PercentageIncreaseDecreaseInExchangeRateDuringYear / itrn_DollarExchangeRateOfRelevantCurrenciesAxis = itrn_IsraeliConsumerPriceIndexMember | [1]
[1] | Based on the Index for the month ending on each balance sheet date, on the basis of 2008 average 100.

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- Definition The percentage increase (decrease) in exchange rate during the year. + References No definition available. + Details
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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 + Details
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