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Supplemental Cash Flow Disclosures - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($)	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 539,072	$ 743,932
Notes Payables - IHT Shares of Beneficial Interest and Partnership Units repurchases	$ 1,141,756	$ 7,006

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- Definition

Notes Payables - IHT Shares of Beneficial Interest and Partnership Units repurchases.

+ References

No definition available.

+ Details

Name:	IHT_NotesPayablesForSharesOfBeneficialInterestAndPartnershipUnitsRepurchases
Namespace Prefix:	IHT_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of cash paid, after deduction of cash paid for capitalized interest, for interest. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

+ Details

Name:	us-gaap_InterestPaidNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration