XML 79 R65.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurements (Details 3) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Fair value of impaired properties and other assets      
Impairment losses $ 5,857,000 $ 43,678,000 $ 83,213,000
Exit costs included in impairment losses in connection with dispositions 979,000 4,146,000 0
Fair value measurement on a nonrecurring basis | Projects in development or held for future development
     
Fair value of impaired properties and other assets      
Impairment losses   1,900,000  
Fair value measurement on a nonrecurring basis | Property Conveyances
     
Fair value of impaired properties and other assets      
Impairment losses 11,000,000    
Exit costs included in impairment losses in connection with dispositions 560,000    
Fair value measurement on a nonrecurring basis | Other Properties with Shortened Holding Periods
     
Fair value of impaired properties and other assets      
Number of properties, shortened holding period 2    
Fair value measurement on a nonrecurring basis | Strategic Reallocation Plan
     
Fair value of impaired properties and other assets      
Impairment losses   19,000,000  
Exit costs included in impairment losses in connection with dispositions 419,000    
Fair value measurement on a nonrecurring basis | Additional Property Disposed
     
Fair value of impaired properties and other assets      
Impairment losses   5,100,000  
Fair value measurement on a nonrecurring basis | Properties, Net
     
Fair value of impaired properties and other assets      
Impairment losses 31,068,000 [1] 62,702,000 [2],[3]  
Fair value measurement on a nonrecurring basis | Significant Unobservable Inputs (Level 3)
     
Fair value of impaired properties and other assets      
Exit costs included in impairment losses in connection with dispositions 979,000    
Fair value measurement on a nonrecurring basis | Significant Unobservable Inputs (Level 3) | Strategic Reallocation Plan
     
Fair value of impaired properties and other assets      
Exit costs included in impairment losses in connection with dispositions   4,200,000  
Fair value measurement on a nonrecurring basis | Significant Unobservable Inputs (Level 3) | Properties, Net
     
Fair value of impaired properties and other assets      
Exit costs included in impairment losses in connection with dispositions   4,200,000  
Assets 4,459,000 173,949,000 [2]  
Fair value measurement on a nonrecurring basis | Total Estimated Fair Value | Properties, Net
     
Fair value of impaired properties and other assets      
Assets 4,459,000 173,949,000 [2]  
Fair value measurement on a nonrecurring basis | Discounted Cash Flow
     
Fair value of impaired properties and other assets      
Discount rate 10.00% [4]    
Terminal capitalization rate 9.50% [4]    
Market rent growth rate 3.00% [4] 3.00% [4]  
Expense growth rate 3.00% [4] 3.00% [4]  
Fair value measurement on a nonrecurring basis | Discounted Cash Flow | Significant Unobservable Inputs (Level 3) | Properties, Net
     
Fair value of impaired properties and other assets      
Assets 4,459,000 166,650,000  
Fair value measurement on a nonrecurring basis | Discounted Cash Flow | Minimum
     
Fair value of impaired properties and other assets      
Discount rate   10.00%  
Terminal capitalization rate   8.70%  
Fair value measurement on a nonrecurring basis | Discounted Cash Flow | Maximum
     
Fair value of impaired properties and other assets      
Discount rate   11.00%  
Terminal capitalization rate   10.00%  
Fair value measurement on a nonrecurring basis | Discounted Cash Flow | Weighted Average
     
Fair value of impaired properties and other assets      
Discount rate   10.30%  
Terminal capitalization rate   8.90%  
Fair value measurement on a nonrecurring basis | Yield Analysis Valuation Technique
     
Fair value of impaired properties and other assets      
Fair value inputs yield   12.00% [4]  
Fair value inputs market rent rate per square foot   8.50 [4]  
Fair value inputs leasing costs per square foot   20.00 [4]  
Fair value measurement on a nonrecurring basis | Yield Analysis Valuation Technique | Significant Unobservable Inputs (Level 3) | Properties, Net
     
Fair value of impaired properties and other assets      
Assets   2,356,000  
Fair value measurement on a nonrecurring basis | Discontinued Operations | Strategic Reallocation Plan
     
Fair value of impaired properties and other assets      
Impairment losses 15,200,000 23,200,000  
Fair value measurement on a nonrecurring basis | Greater Baltimore | Other Properties with Shortened Holding Periods
     
Fair value of impaired properties and other assets      
Impairment losses 5,900,000    
Fair value measurement on a nonrecurring basis | Greater Philadelphia
     
Fair value of impaired properties and other assets      
Impairment losses   46,100,000  
Future expenditure redevelopment   25,000,000  
Fair value measurement on a nonrecurring basis | Colorado Springs | Strategic Reallocation Plan
     
Fair value of impaired properties and other assets      
Impairment losses   $ 6,900,000  
[1] Represents aggregate impairment losses on non recurring fair value measurements resulting in impairment losses, excluding exit costs incurred of $979,000.
[2] Reflects balance sheet classifications of assets at time of fair value measurement, excluding the effect of held for sale classifications.
[3] Represents aggregate impairment losses on non recurring fair value measurements resulting in impairment losses, excluding exit costs incurred of $4.2 million.
[4] Only one value applied for this unobservable input.