XML 55 R42.htm IDEA: XBRL DOCUMENT v3.8.0.1

Basis of Presentation and Summary of Significant Accounting Policies - Income Taxes (Details)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Real estate investment trust required distribution (percent)	90.00%

X

- Definition

The percentage of its taxable income the Company must distribute to qualify as a Real Estate Investment Trust (REIT).

+ References

No definition available.

+ Details

Name:	ivtp_RealEstateInvestmentTrustRequiredDistribution
Namespace Prefix:	ivtp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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