Represents the gross value of investment property contributions and acquisitions.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum amount of grocery-anchored and community retail centers, located in Midwestern U.S. markets to be acquired.

+ References

No definition available.

+ Details

Name:	irc_MaximumAmountForAcquisitionOfProperties
Namespace Prefix:	irc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the maximum potential equity contribution under the terms of the agreement.

+ References

No definition available.

+ Details

Name:	irc_MaximumPotentialEquityContribution
Namespace Prefix:	irc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the maximum potential equity contribution, under the terms of agreement, by an investor in the joint venture.

+ References

No definition available.

+ Details

Name:	irc_MaximumPotentialEquityContributionByPartnerToJointVenture
Namespace Prefix:	irc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of separate Real Estate Investment Trusts established to hold title to the properties included in the joint venture.

+ References

No definition available.

+ Details

Name:	irc_NumberOfReitsEstablished
Namespace Prefix:	irc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the remaining commitment of potential equity contribution under the terms of the agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	irc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the remaining commitment of potential equity contribution, under the terms of agreement, by an investor in the joint venture.

+ References

No definition available.

+ Details

Name:	irc_RemainingPotentialEquityContributionCommitmentByPartnerToJointVenture
Namespace Prefix:	irc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_GainLossOnSaleOfProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_VariableInterestEntityLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
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Unconsolidated Joint Ventures (Details 2) (USD $)	3 Months Ended		6 Months Ended			12 Months Ended
Unconsolidated Joint Ventures (Details 2) (USD $)	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Variable interest entity, not the primary beneficiary Joint Venture with PGGM	Dec. 31, 2010 Variable interest entity, not the primary beneficiary Joint Venture with PGGM trust	Jun. 30, 2013 Joint Venture with PGGM Variable interest entity, not the primary beneficiary PGGM	Jun. 30, 2013 Joint Venture with PGGM Variable interest entity, not the primary beneficiary The Company
Unconsolidated joint ventures
Number of REITs established						2
Maximum amount of grocery-anchored and community retail centers to be acquired					$ 900,000,000
Maximum potential equity contribution								280,000,000
PGGM's maximum potential equity contribution							230,000,000
Gross value of retail assets acquired by joint venture					540,000,000
Remaining maximum commitment of PGGM's equity contribution							89,000,000
Remaining maximum commitment of equity contribution								107,000,000
Ownership percentage in joint venture							45.00%	55.00%
Gain on sale of investment properties	$ 0	$ 0	$ 1,498,000	$ 0	$ 0