Discontinued Operations (Narrative) (Details) - USD ($)			3 Months Ended	12 Months Ended
		Feb. 02, 2015	Jun. 30, 2014	Dec. 31, 2014	May 27, 2014	May 06, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on extinguishment of debt obligations				$ 1,423,000
McCormick Place [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Mortgage loans payable and accrued interest for properties under conveyance process						$ 2,700,000
Carrying value of property held for sale						$ 1,800,000
Gahanna Discount Drug Mart Plaza [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Mortgage loans payable and accrued interest for properties under conveyance process					$ 5,000,000
Carrying value of property held for sale					$ 4,300,000
Gain on extinguishment of debt obligations			$ 600,000
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales Price				74,761,000
Discontinued Operations [Member] | Huntingdon Plaza [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales Price		$ 2,200,000
Discontinued Operations [Member] | McCormick Place [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales Price	[1]			2,679,000
Gain on extinguishment of debt obligations			$ 800,000
Discontinued Operations [Member] | Gahanna Discount Drug Mart Plaza [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales Price	[1]			$ 4,982,000

[1] Lender accepted a deed-in-lieu of foreclosure on the property. Sales price represents mortgage loan payable, accrued interest and other expenses forgiven upon title transfer.