Annual report pursuant to Section 13 and 15(d)

Deferred Charges, Goodwill And Other Assets, Net (Schedule Of Deferred Charges, Goodwill And Other Assets) (Details)

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Deferred Charges, Goodwill And Other Assets, Net (Schedule Of Deferred Charges, Goodwill And Other Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Deferred Charges, Goodwill And Other Assets [Line Items]      
Deferred leasing costs $ 239,690 $ 239,138  
Deferred financing costs 23,723 24,042  
Deferred charges, gross 263,413 263,180  
Accumulated amortization (126,816) (122,358)  
Deferred charges, net 136,597 140,822  
Notes receivable [1] 13,496 21,491  
In-place lease values, related intangibles and other assets, net 10,931 6,565  
Goodwill 2,945 2,945  
Prepaid expenses and other assets, net [2] 49,408 32,827  
Total deferred charges, goodwill and other assets, net 213,377 204,650  
Lease revenue 487,041 516,727 $ 540,165
Acquired Above And Below Market Lease Intangibles [Member]      
Deferred Charges, Goodwill And Other Assets [Line Items]      
Lease revenue 200 $ 700 $ 1,500
Acquisition-related Costs [Member]      
Deferred Charges, Goodwill And Other Assets [Line Items]      
Deposits for acquisitions and developments 15,100    
Mortgage Receivable [Member]      
Deferred Charges, Goodwill And Other Assets [Line Items]      
Notes receivable $ 10,400    
Spread over LIBOR 6.00%    
Interest-Free Notes Receivable [Member]      
Deferred Charges, Goodwill And Other Assets [Line Items]      
Notes receivable $ 3,100    
[1] Includes as of December 31, 2015: a mortgage receivable for $10.4 million which bears interest at LIBOR plus six percent and matures in August 2016; and an interest-free note receivable with a net present value of $3.1 million and matures in April 2023. The Company believes these balances are fully collectible.
[2] Includes as of December 31, 2015, deposits of $15.1 million for acquisitions and developments.