Consolidated Statements Of Cash Flows (Parenthetical) - USD ($)	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Statement of Cash Flows [Abstract]
Non cash net unrealized loss (gain) on investments, deferred tax benefit (provision)	$ 1,691,188	$ (410,923)

The amount of deferred tax provision resulting from unrealized gains and losses during the period.

No definition available.

Name:	itic_DeferredTaxProvisionRelatedToUnrealizedGainLossOnInvestments
Namespace Prefix:	itic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration