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Condensed Consolidated Statement of Shareholders' Equity (Unaudited) (USD $)	Shares of Beneficial Interest [Member]	Treasury Stock [Member]	Trust Shareholder Equity [Member]	Non-Controlling Interest [Member]	Total
Balance at Jan. 31, 2015	$ 13,812,470us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	$ (12,193,491)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember	$ 1,618,979us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TrustForBenefitOfEmployeesMember	$ 1,346,248us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember	$ 2,965,227us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Balance, shares at Jan. 31, 2015	8,265,102us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	8,580,744us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Purchase of Treasury Stock		(38,498)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember	(38,498)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TrustForBenefitOfEmployeesMember
Purchase of Treasury Stock,shares	(14,410)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	14,410us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Shares of Beneficial Interest Issued for Services Rendered	16,320us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember		16,320us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_TrustForBenefitOfEmployeesMember
Shares of Beneficial Interest Issued for Services Rendered, shares	21,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Sales of Ownership Interests in Subsidiary, net				621,254us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Distribution to Non-Controlling Interests				(237,944)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Reallocation of Non-Controlling Interests and Other	637,786IHT_ReallocationOfNoncontrollingInterestsAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember		637,786IHT_ReallocationOfNoncontrollingInterestsAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_TrustForBenefitOfEmployeesMember	(640,290)IHT_ReallocationOfNoncontrollingInterestsAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net Income	206,532us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember		206,532us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_TrustForBenefitOfEmployeesMember	200,623us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember	407,155us-gaap_ProfitLoss
Balance at Apr. 30, 2015	$ 14,673,108us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	$ (12,231,989)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember	$ 2,441,119us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TrustForBenefitOfEmployeesMember	$ 1,289,891us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember	$ 3,731,010us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Balance, shares at Apr. 30, 2015	8,271,692us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	8,595,154us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember

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Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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