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Fair Value Measurements (Quantitative Information Regarding Level 3 Assets Measured At Fair Value On Non-recurring Basis) (Details) (USD $)
3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2014
property
Dec. 31, 2013
Mar. 31, 2014
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2013
Fair Value, Inputs, Level 3 [Member]
Mar. 31, 2014
Fair Value, Inputs, Level 3 [Member]
Sales Comparison Approach Valuation Technique [Member]
Minimum [Member]
Mar. 31, 2014
Fair Value, Inputs, Level 3 [Member]
Sales Comparison Approach Valuation Technique [Member]
Maximum [Member]
Mar. 31, 2014
Fair Value, Inputs, Level 3 [Member]
Sales Comparison Approach Valuation Technique [Member]
Weighted Average [Member]
Mar. 31, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
property
Mar. 31, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
Discounted Cash Flow Valuation Technique [Member]
Minimum [Member]
Mar. 31, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
Discounted Cash Flow Valuation Technique [Member]
Maximum [Member]
Mar. 31, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
Discounted Cash Flow Valuation Technique [Member]
Weighted Average [Member]
Mar. 31, 2014
Land Development Property [Member]
Discounted Cash Flow Valuation Technique [Member]
Mar. 31, 2014
Land Development Property [Member]
Fair Value, Inputs, Level 3 [Member]
Mar. 31, 2014
Land [Member]
Fair Value, Inputs, Level 3 [Member]
item
Fair Value Inputs, Assets, Quantitative Information [Line Items]                            
Real estate held for sale/conveyance $ 84,200,000 $ 81,854,000 $ 31,755,000 $ 81,854,000       $ 20,028,000         $ 10,301,000 $ 1,426,000
Capitalization rates                 8.50% 11.00% 9.80% 7.30%    
Discount rates                 9.20% 11.60% 10.00% 7.80%    
Price per acre         23,000 139,000 44,000              
Number of parcels of land                           3
Number of properties 62             5