Properties Held For Sale and Related Transactions (Schedule Of Transactions Related To Properties Held For Sale/Conveyance) (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sales	$ 402,000	$ 346,000	$ 481,000
Discontinued Operations [Member] | East Chestnut [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent Owned		100.00%
Date Sold		Jan. 02, 2013
Sales price		3,100,000
Discontinued Operations [Member] | Columbia Mall [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent Owned		100.00%
Date Sold		Apr. 17, 2013
Sales price		2,775,000
Discontinued Operations [Member] | Heritage Crossing [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent Owned		100.00%
Date Sold		May 09, 2013
Sales price		9,400,000
Discontinued Operations [Member] | Westlake Discount Drug Mart Plaza [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent Owned		100.00%
Date Sold		Jun. 05, 2013
Sales price		2,240,000
Continuing Operations [Member] | Huntingdon Plaza Land Parcel [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent Owned		100.00%
Date Sold		Mar. 29, 2013
Sales price		390,000
Gain on sales		$ 291,000