XML 42 R30.htm IDEA: XBRL DOCUMENT v3.10.0.1

Organization (Details)	9 Months Ended
	Sep. 30, 2018 joint_venture Properties Assets	Sep. 30, 2017 joint_venture Properties Assets
Entity Information [Line Items]
Number of operating real estate joint ventures | joint_venture	2	2
Corporate Joint Venture
Entity Information [Line Items]
Number of retail properties | joint_venture	1	1
Number of managed assets | Assets	14	15
Retail
Entity Information [Line Items]
Number of retail properties | Properties	63	70
Retail | Consolidated Properties
Entity Information [Line Items]
Number of retail properties | Properties	2

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	dei_EntityInformationLineItems
Namespace Prefix:	dei_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number Of Joint Ventures

+ References

No definition available.

+ Details

Name:	ivtp_NumberOfJointVentures
Namespace Prefix:	ivtp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Managed Assets

+ References

No definition available.

+ Details

Name:	ivtp_NumberofManagedAssets
Namespace Prefix:	ivtp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=srt_RetailSiteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RealEstatePropertiesAxis=us-gaap_ConsolidatedPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: