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Fair Value Measurements (Quantitative Information Regarding Level 3 Assets Measured At Fair Value On Non-recurring Basis) (Details) (USD $)
 6 Months Ended 6 Months Ended
Jun. 30, 2014
property
Dec. 31, 2013
Jun. 30, 2014
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2013
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2014
Fair Value, Inputs, Level 3 [Member]
Sales Comparison Approach Valuation Technique [Member]
Minimum [Member]
Jun. 30, 2014
Fair Value, Inputs, Level 3 [Member]
Sales Comparison Approach Valuation Technique [Member]
Maximum [Member]
Jun. 30, 2014
Fair Value, Inputs, Level 3 [Member]
Sales Comparison Approach Valuation Technique [Member]
Weighted Average [Member]
Jun. 30, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
property
Jun. 30, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
Discounted Cash Flow Valuation Technique [Member]
Minimum [Member]
Jun. 30, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
Discounted Cash Flow Valuation Technique [Member]
Maximum [Member]
Jun. 30, 2014
Operating retail real estate [Member]
Fair Value, Inputs, Level 3 [Member]
Discounted Cash Flow Valuation Technique [Member]
Weighted Average [Member]
Jun. 30, 2014
Land [Member]
Fair Value, Inputs, Level 3 [Member]
item
Fair Value Inputs, Assets, Quantitative Information [Line Items]                        
Real estate held for sale/conveyance $ 51,607,000 $ 81,854,000 $ 33,383,000 $ 81,854,000       $ 31,961,000       $ 1,422,000
Capitalization rates                 7.30% 10.00% 8.50%  
Discount rates                 7.80% 11.60% 8.70%  
Price per acre         23,000 138,000 44,000          
Number of parcels of land                       3
Number of properties 60             5