XML 44 R46.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Significant Accounting Policies (Real Estate Assets) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]      
Net amortization expense of acquired intangibles $ 10,550 $ 7,137 $ 8,224
Intangible Assets Disclosure [Text Block]   December 31, 2011  
Future Amortization Expense, 2013 17,488    
Future Amortization Expense, 2014 13,921    
Future Amortization Expense, 2015 10,885    
Future Amortization Expense, 2016 6,541    
Future Amortization Expense, 2017 4,848    
Interest expense capitalized 2,671 4,955 3,334
Building [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 40    
Improvements [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 10 to 20    
Equipment and Fixtures [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 7 to 10    
Other Assets [Member] | Above Market Leases [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Acquired Intangible Assets, Cost 69,360 55,642  
Acquired Intangible Assets, Accumulated Amortization (37,454) (33,954)  
Other Assets [Member] | Intangible Leases, Acquired-in-Place [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Acquired Intangible Assets, Cost 117,631 54,838  
Acquired Intangible Assets, Accumulated Amortization (46,767) (36,753)  
Other Assets [Member] | Intangible Leases, Tenant Relationships [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Acquired Intangible Assets, Cost 27,880 27,318  
Acquired Intangible Assets, Accumulated Amortization (3,350) (2,853)  
Other Liabilities [Member] | Intangible Leases, Acquired-in-Place, Market Adjustment [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Acquired Intangible Assets, Cost 104,012 66,627  
Acquired Intangible Assets, Accumulated Amortization $ (57,625) $ (51,755)