Annual report pursuant to Section 13 and 15(d)

Accounting Policies - Real Estate and Depreciation (Details)

v2.4.0.8
Accounting Policies - Real Estate and Depreciation (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]      
Operating Lease Term, Average, Minimum 3 years    
Real estate depreciation $ 63,400,000 $ 61,100,000 $ 55,100,000
Total interest expense from continuing operations 64,809,000 62,315,000 62,140,000
Capitalized interest 1,236,000 1,688,000 738,000
Interest expense, net of capitalized interest $ 63,573,000 $ 60,627,000 $ 61,402,000
Operating Lease Term, Average, Maximum 5 years    
Minimum [Member]
     
Property, Plant and Equipment [Line Items]      
Useful Life 3 years    
Minimum [Member] | Building [Member]
     
Property, Plant and Equipment [Line Items]      
Useful Life 28 years    
Minimum [Member] | Building and Building Improvements [Member]
     
Property, Plant and Equipment [Line Items]      
Useful Life 3 years    
Maximum [Member]
     
Property, Plant and Equipment [Line Items]      
Useful Life 50 years    
Maximum [Member] | Building [Member]
     
Property, Plant and Equipment [Line Items]      
Useful Life 50 years    
Maximum [Member] | Building and Building Improvements [Member]
     
Property, Plant and Equipment [Line Items]      
Useful Life 30 years