Acquisitions - Schedule of Acquisition Cost of Shopping Centers (Detail) - Shopping Center Acquired [Member] $ in Thousands	9 Months Ended
Sep. 30, 2015 USD ($)
Business Acquisition [Line Items]
Land	$ 51,617
Buildings	97,702
Tenant improvements	3,834
Other assets	1,252
Assets acquired	171,480
Less: Mortgage debt assumed at fair value	(33,735)
Less: Below-market leases	(18,191)
Less: Other liabilities assumed	(1,144)
Net assets acquired	118,410
In-Place Leases (Including Lease Origination Costs and Fair Market Value of Leases) [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 11,325
Weighted Average Amortization Period	7 years 10 months 24 days
Tenant Relations [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 5,750
Weighted Average Amortization Period	11 years 9 months 18 days
Below-Market Leases [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period	17 years 9 months 18 days

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.

+ References

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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.

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- Definition

Amount of assets acquired at the acquisition date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

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- Definition

Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of real estate acquired, at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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