Real Estate Held for Investment (Details) - Acquired Intangible Assets (Parentheticals)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Leases, Acquired-in-Place [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average life	132 months	144 months
Above Market Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average life	102 months	114 months
Off Market Unfavorable Lease
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average life	157 months	169 months

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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration