Discontinued Operations (Narrative) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended
Feb. 25, 2014 Harbor Square [Member]	Mar. 31, 2014 Gahanna Discount Drug Mart Plaza and McCormick Place [Member] property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price of real estate sold	$ 25.0
Number of properties in process of conveying		2
Mortgage loans payable and accrued interest for properties under conveyance process		7.9
Estimated gain that would be recognized at the time of conveyances		$ 1.7

Revenue from the sale of commercial, industrial, or residential property during the period. This element is more likely than not relevant to an entity for which real estate operations are a principal activity. If real estate operations are not a principal activity, the reporting entity would likely use a gain (loss) on sale of property, plant, or equipment type element.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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