Investments in Securities and Fair Value Schedule of Gross Realized Gains (Losses) on Securities (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	$ 1,028,133	$ 369,673	$ 714,168
Gross realized losses	(524,396)	(180,169)	(185,411)
Net realized gain	503,737	189,504	528,757
Impairments of other assets and investments	(10,062)us-gaap_OtherAssetImpairmentCharges	(34,070)us-gaap_OtherAssetImpairmentCharges	(6,504)us-gaap_OtherAssetImpairmentCharges
Net gain on other assets and investments	45,288itic_GainsonOtherAssetsandInvestments	48,946itic_GainsonOtherAssetsandInvestments	543,986itic_GainsonOtherAssetsandInvestments
Net loss on other assets and investments	(270,669)	(8,580)	0
Realized Investment Gains (Losses)	(235,443)us-gaap_RealizedInvestmentGainsLosses	6,296us-gaap_RealizedInvestmentGainsLosses	537,482us-gaap_RealizedInvestmentGainsLosses
Gain (Loss) on Investments	268,294us-gaap_GainLossOnInvestments	195,800us-gaap_GainLossOnInvestments	1,066,239us-gaap_GainLossOnInvestments
General obligations of U.S. states, territories and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	0	0	250
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	6,670	0	52,396
Common stocks and nonredeemable preferred stocks
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	1,021,463	369,673	450,461
Gross realized losses	(509,854)	(180,169)	(91,975)
Auction rate securities
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	0	0	211,061
Other Than Temporary Impairment Of Securities
Schedule of Available-for-sale Securities [Line Items]
Gross realized losses	$ (14,542)	$ 0	$ (93,436)

Gains on Other Assets and Investments

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Realized Losses on Other Assets and Investments

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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