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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Relevant Exchange Rates) (Details)	12 Months Ended
	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.

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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

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