Real Estate (Schedule Of Transactions Related To Properties Held For Sale/Conveyance) (Details) (Continuing Operations [Member], USD $)	9 Months Ended	0 Months Ended
Sep. 30, 2014	Sep. 30, 2014 Fairview Plaza [Member]	Sep. 30, 2014 Carbondale Plaza [Member]	Sep. 30, 2014 Virginia Little Creek [Member]	Sep. 30, 2014 Annie Land Plaza [Member]	Sep. 30, 2014 Smithfield Plaza [Member]	Oct. 21, 2014 Smithfield Plaza [Member] Subsequent Event [Member]
Real Estate Properties [Line Items]
Date Sold		May 27, 2014	Jul. 18, 2014	Aug. 22, 2014	Sep. 26, 2014	Oct. 21, 2014
Sales price	$ 36,500,000	$ 12,450,000	$ 10,700,000	$ 9,850,000	$ 3,500,000		$ 12,400,000
Gain on sales, continuing operations	$ 6,142,000	$ 3,810,000	$ 123,000	$ 2,209,000

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