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 |

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- 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

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- 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

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- 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

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- 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

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

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

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