Consolidated Statements Of Cash Flows (Parenthetical) - USD ($)	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Statement of Cash Flows [Abstract]
Non cash net unrealized gain on investments, deferred tax benefit (provision)	$ 950,040	$ (745,285)

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