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Leases (Details Narrative)	12 Months Ended
	Jan. 31, 2020
Minimum [Member]
Operating lease and financing, remaining lease term	2 years
Maximum [Member]
Operating lease and financing, remaining lease term	38 years

X

- Definition

Operating lease and financing, remaining lease term.

+ References

No definition available.

+ Details

Name:	IHT_LesseeOperatingLeaseAndFinancingLeaseRemainingLeaseTerm
Namespace Prefix:	IHT_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: