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INCOME TAX (Narrative) (Details) In Millions, unless otherwise specified	12 Months Ended						12 Months Ended	0 Months Ended	12 Months Ended				0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 04, 2014 ILS	Dec. 31, 2014 Israel [Member] USD ($)	Aug. 04, 2014 Israel [Member] USD ($)	Dec. 31, 2014 United States [Member] USD ($)	Aug. 04, 2014 2012 [Member] Israel [Member]	Dec. 31, 2014 2012 [Member] Scenario, Actual [Member]	Dec. 31, 2014 2012 [Member] Preferred Company [Member] Investment Law [Member]	Dec. 31, 2014 2013 [Member] Preferred Company [Member] Investment Law [Member]	Dec. 31, 2014 2014 [Member] Preferred Company [Member] Investment Law [Member]	Aug. 04, 2014 2010 [Member] Israel [Member]
Income Taxes [Line Items]
Minimum percentage of annual income which is derived from export considered for application of reduced corporate tax rate	25.00%itrn_MinimumPercentageOfAnnualIncomeWhichIsDerivedFromExportConsideredForApplicationOfReducedCorporateTaxRate
Tax rate applicable to the Company	26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate						25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / itrn_FutureCorporateTaxRateAxis = itrn_CorporateTaxRateYearTwentyTwelveMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioActualMember	15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / itrn_FutureCorporateTaxRateAxis = itrn_CorporateTaxRateYearTwentyTwelveMember / itrn_IncomeTaxesAdditionalInformationAxis = itrn_PreferredCompanyMember / us-gaap_StatementScenarioAxis = itrn_ScenarioOneMember	12.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / itrn_FutureCorporateTaxRateAxis = itrn_CorporateTaxRateYearTwentyThirteenMember / itrn_IncomeTaxesAdditionalInformationAxis = itrn_PreferredCompanyMember / us-gaap_StatementScenarioAxis = itrn_ScenarioOneMember	16.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / itrn_FutureCorporateTaxRateAxis = itrn_CorporateTaxRateYearTwentyFourteenMember / itrn_IncomeTaxesAdditionalInformationAxis = itrn_PreferredCompanyMember / us-gaap_StatementScenarioAxis = itrn_ScenarioOneMember
Year under examination								2012					2010
Income tax liability for prior year tax assessments				36.0us-gaap_IncomeTaxExaminationIncreaseDecreaseInLiabilityFromPriorYear		$ 10.5us-gaap_IncomeTaxExaminationIncreaseDecreaseInLiabilityFromPriorYear / us-gaap_IncomeTaxAuthorityAxis = country_IL
Carry forward tax losses					$ 0.8us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = country_IL		$ 13.6us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = country_US
Carry forward tax losses, expiration							Dec. 31, 2022
Tax rate on capital gains									25.00%itrn_TaxRateOnCapitalGains / itrn_FutureCorporateTaxRateAxis = itrn_CorporateTaxRateYearTwentyTwelveMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioActualMember
Tax rate applicable to betterment									25.00%itrn_TaxRateApplicableToBetterment / itrn_FutureCorporateTaxRateAxis = itrn_CorporateTaxRateYearTwentyTwelveMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioActualMember

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Represents the minimum percentage of annual income, which is derived from export considered for application of reduced corporate tax rate.

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Represents the percentage of tax rate applicable to betterment in real terms.

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Represents the percentage of tax rate on capital gains in real terms.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

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The amount the liability recorded for the income tax examination increased or decreased in the current year/accounting period.

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Tax year being audited in the income tax examination, in CCYY format.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

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