Name:	ivtp_EquityMethodInvestmentsDebtMaturitiesRepaymentsofPrincipalInNextTwelveMonths
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Data Type:	xbrli:monetaryItemType
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Equity Method Investments Long Term Debt

No definition available.

Name:	ivtp_EquityMethodInvestmentsLongTermDebt
Namespace Prefix:	ivtp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Amount of long term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year for equity method investments.

No definition available.

Name:	ivtp_EquityMethodInvestmentsLongTermDebtMaturitiesRepaymentsofPrincipalAfterFiveYears
Namespace Prefix:	ivtp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of long term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year for equity method investments.

No definition available.

Name:	ivtp_EquityMethodInvestmentsLongTermDebtMaturitiesRepaymentsofPrincipalinYearFive
Namespace Prefix:	ivtp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of long term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year for equity method investments.

No definition available.

Name:	ivtp_EquityMethodInvestmentsLongTermDebtMaturitiesRepaymentsofPrincipalinYearFour
Namespace Prefix:	ivtp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of long term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year for equity method investments.

No definition available.

Name:	ivtp_EquityMethodInvestmentsLongTermDebtMaturitiesRepaymentsofPrincipalinYearThree
Namespace Prefix:	ivtp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of long term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year for equity method investments.

No definition available.

Name:	ivtp_EquityMethodInvestmentsLongTermdebtMaturitiesRepaymentsofPrincipalInYearTwo
Namespace Prefix:	ivtp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_LongTermDebtByMaturityAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
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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.

No definition available.