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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Trading gains | $ 133,000us-gaap_MarketableSecuritiesGainLoss |  |  |  | $ 2,000us-gaap_MarketableSecuritiesGainLoss |
Allowance for doubtful accounts receivable | 2,391,000us-gaap_AllowanceForDoubtfulAccountsReceivable |  | 1,945,000us-gaap_AllowanceForDoubtfulAccountsReceivable |  |  |
Intangible asset impairment loss | 43,000us-gaap_ImpairmentOfIntangibleAssetsFinitelived |  |  |  |  |
Goodwill | 4,041,000us-gaap_Goodwill |  | 5,433,000us-gaap_Goodwill |  | 8,043,000us-gaap_Goodwill | [1]
Goodwill impairment loss | 879,000us-gaap_GoodwillImpairmentLoss | [2] | 3,093,000us-gaap_GoodwillImpairmentLoss | [2] | 672,000us-gaap_GoodwillImpairmentLoss |
Severance expenses | 1,460,000us-gaap_SeveranceCosts1 |  | 882,000us-gaap_SeveranceCosts1 |  | 1,204,000us-gaap_SeveranceCosts1 |
Advertising expenses | 6,700,000us-gaap_AdvertisingExpense |  | 7,600,000us-gaap_AdvertisingExpense |  | 6,600,000us-gaap_AdvertisingExpense |
Deferred expenses amortization period | 20 months |  |  |  |  |
Minimum [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Ownership percentage, equity method | 20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |
Maximum [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Ownership percentage, equity method | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |
Certain Reporting Units [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill | 1,500,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitsMember |  | 4,800,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitsMember |  |  |
Goodwill impairment loss | 900,000us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitsMember |  | 3,100,000us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitsMember |  |  |
Goodwill, fair value | 700,000us-gaap_GoodwillFairValueDisclosure / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitsMember |  |  |  |  |
Certain Reporting Unit One [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill | 0us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitMember |  | 2,600,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitMember |  |  |
Goodwill impairment loss |  |  | 3,100,000us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitMember |  |  |
Goodwill, fair value | 0us-gaap_GoodwillFairValueDisclosure / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitMember |  | 1,700,000us-gaap_GoodwillFairValueDisclosure / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitMember |  |  |
Certain Reporting Unit Two [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill | 0us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitTwoMember |  | 500,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitTwoMember |  |  |
Goodwill, fair value | 0us-gaap_GoodwillFairValueDisclosure / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitTwoMember |  | 0us-gaap_GoodwillFairValueDisclosure / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitTwoMember |  |  |
Certain Reporting Unit Three [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill | 0us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitThreeMember |  | 1,700,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitThreeMember |  |  |
Goodwill, fair value | $ 0us-gaap_GoodwillFairValueDisclosure / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitThreeMember |  | $ 0us-gaap_GoodwillFairValueDisclosure / us-gaap_StatementBusinessSegmentsAxis = itrn_CertainReportingUnitThreeMember |  |  |
[1] | The accumulated amount of impairment loss as of January 1, 2013, December 31, 2013 and December 31, 2014 was US$ 2,452,000, US$ 5,545,000 and US$ 6,424,000, respectively.
[2] | During 2014, 2013 and 2012, the Company recorded an amount of US$ 879,000 US$ 3,093,000 and US$ 672,000, respectively, as impairment with respect to goodwill.

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