Properties Held For Sale and Related Transactions (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended	0 Months Ended	3 Months Ended
	Apr. 30, 2011	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2013 property	Jun. 05, 2013 Westlake Discount Drug Mart Plaza [Member]	Jun. 30, 2013 Westlake Discount Drug Mart Plaza [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of property					$ 2,100,000
Mortgage loans payable and accrued interest for properties under conveyance process				21,800,000	3,400,000
Gain on extinguishment of debt				1,298,000		1,300,000
Number of properties in process of conveying				3
Deferred gain on conveyance				11,000,000
Loan to developers	4,100,000
Interest rate on loan to developers	6.25%
Impairment charge of mortgage loan receivable			4,400,000
Collection on developers loan		1,100,000
Impairment reversal				$ (1,100,000)