Acquisitions - Schedule of Acquisition Cost of Shopping Centers (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Less: Below-market leases	$ (147,941)	$ (155,297)
Shopping Center Acquired [Member]
Business Acquisition [Line Items]
Land	27,093	74,699
Buildings	99,034	140,668
Tenant improvements	4,385	5,229
Other assets	146	1,252
Assets acquired	153,489	250,274
Less: Mortgage debt assumed at fair value	0	(33,735)
Less: Below-market leases	(6,967)	(29,885)
Less: Other liabilities assumed	(547)	(1,169)
Net assets acquired	145,975	185,485
Shopping Center Acquired [Member] \| In-Place Leases (Including Lease Origination Costs and Fair Market Value of Leases) [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 14,021	$ 19,250
Weighted Average Amortization Period	5 years 1 month 6 days	7 years 3 months 18 days
Shopping Center Acquired [Member] \| Tenant Relations [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 8,810	$ 9,176
Weighted Average Amortization Period	11 years 1 month 6 days	10 years 10 months 24 days
Shopping Center Acquired [Member] \| Below-Market Leases [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period	15 years 4 months 24 days	18 years 4 months 24 days

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+ References

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-Publisher FASB
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Amount of assets acquired at the acquisition date.

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-Publisher FASB
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-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
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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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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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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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