Annual report pursuant to Section 13 and 15(d)

Accounting Policies Fair value of in place leases (Details)

v2.4.0.8
Accounting Policies Fair value of in place leases (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Tenant Origination Costs Member
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Liabilities, Net Lease, Gross $ 47,697 $ 48,172
Finite-lived Intangible Liabilities, Net Lease, Accumulated Amortization 29,653 23,719
Finite-lived Intangible Liabilities, Net Lease, Net 18,044 24,453
Leasing Commissions Absorption Costs Member
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Liabilities, Net Lease, Gross 78,629 78,464
Finite-lived Intangible Liabilities, Net Lease, Accumulated Amortization 48,376 37,672
Finite-lived Intangible Liabilities, Net Lease, Net 30,253 40,792
Net Lease Intangible Assets Member
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Liabilities, Net Lease, Gross 12,495 12,430
Finite-lived Intangible Liabilities, Net Lease, Accumulated Amortization 7,008 5,350
Finite-lived Intangible Liabilities, Net Lease, Net 5,487 7,080
Net Lease Intangible Liabilities Member
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Liabilities, Net Lease, Gross 26,348 26,244
Finite-lived Intangible Liabilities, Net Lease, Accumulated Amortization 19,403 17,089
Finite-lived Intangible Liabilities, Net Lease, Net 6,945 9,155
Leases, Acquired-in-Place, Below-Market Ground Lease [Member]
   
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Liabilities, Net Lease, Gross 12,080 12,080
Finite-lived Intangible Liabilities, Net Lease, Accumulated Amortization 1,145 956
Finite-lived Intangible Liabilities, Net Lease, Net $ 10,935 $ 11,124