Name:	itrn_AdditionalRelatedPartyTransactionTermOfAgreement
Namespace Prefix:	itrn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The amount of related party expenses from third party.

No definition available.

Name:	itrn_RelatedPartyExpensesFromThirdParty
Namespace Prefix:	itrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of related party transaction monthly expense.

No definition available.

Name:	itrn_RelatedPartyTransactionMonthlyExpense
Namespace Prefix:	itrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The number of days notice required to terminate agreement.

No definition available.

Name:	itrn_RelatedPartyTransactionNoticeRequiredToTerminateAgreement
Namespace Prefix:	itrn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The related party agreement term 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	itrn_RelatedPartyTransactionTermOfAgreement
Namespace Prefix:	itrn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The related party vacation and sick days in PnYnMnDTnHnMnS format, for example, P1Y5M13D represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	itrn_RelatedPartyTransactionTermOfVacationAndSickDays
Namespace Prefix:	itrn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Value added tax for monthly cost.

No definition available.

Name:	itrn_RelatedPartyTransactionValueAddedTax
Namespace Prefix:	itrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

Name:	us-gaap_GeneralInsuranceExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	itrn_RelatedPartyByIndividualAxis=itrn_YehudaKahaneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_CurrencyAxis=currency_ILS
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=itrn_IzzySheratzkyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=itrn_EyalSheratzkyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=itrn_NirSheratzkyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=itrn_GilSheratzkyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=itrn_TzivtitInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ScheduleOfMalpracticeInsuranceTypeAndTierIdentifierAxis=itrn_BasicInsurancePoliciesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: