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Commitments And Contingencies (Details) (USD $) | Sep. 30, 2013 | Dec. 31, 2012
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Commitments and Contingencies Disclosure [Abstract] |  |
Like-kind exchange deposits and reverse exchange property | $ 60,431,000 | $ 55,580,000

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- Definition Like-kind exchange deposits and reverse exchange property + References No definition available. + Details
Name: | itic_LikeKindExchangeDepositsAndReverseExchangeProperty
Namespace Prefix: | itic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration