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Commitments And Contingencies (Details) (USD $) | Mar. 31, 2015 | Dec. 31, 2014
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Commitments and Contingencies Disclosure [Abstract] |  |
Like-kind exchange deposits and reverse exchange property | $ 103,658,000 itic_LikeKindExchangeDepositsAndReverseExchangeProperty | $ 82,477,000 itic_LikeKindExchangeDepositsAndReverseExchangeProperty

X
- 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