XML 18 R9.htm IDEA: XBRL DOCUMENT
v3.23.1

Consolidated Statements Of Cash Flows (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Statement of Cash Flows [Abstract] |  |
Deferred tax benefit (provision) related to unrealized loss (gain) on investments | $ (66) | $ 583
Adjustments to postretirement benefits obligation, net of deferred tax (expense) benefit | $ (30) | $ (46)

X
- Definition Adjustments To Postretirement Benefits Obligation, Net Of Deferred Tax Benefit Provision + References No definition available. + Details
Name: | itic_AdjustmentsToPostretirementBenefitsObligationNetOfDeferredTaxBenefitProvision
Namespace Prefix: | itic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of deferred tax provision resulting from unrealized gains and losses during the period. + References No definition available. + Details
Name: | itic_DeferredTaxProvisionRelatedToUnrealizedGainLossOnInvestments
Namespace Prefix: | itic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration