Quarterly report pursuant to Section 13 or 15(d)

Real Estate Transactions (Schedule Of Property Sales) (Details)

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Real Estate Transactions (Schedule Of Property Sales) (Details) (USD $)
 9 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 0 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2013
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Sep. 30, 2013
19 Skyline Drive [Member]
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Dec. 31, 2012
19 Skyline Drive [Member]
Sep. 30, 2013
55 Corporate Drive [Member]
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Sep. 30, 2013
200 Riser Road [Member]
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Sep. 30, 2013
777 Passaic Avenue [Member]
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Sep. 30, 2013
16 And 18 Sentry Park West [Member]
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Dec. 31, 2012
16 And 18 Sentry Park West [Member]
Sep. 30, 2013
51 Imclone Drive [Member]
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Sep. 30, 2013
40 Richards Avenue [Member]
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Sep. 30, 2013
106 Allen Road [Member]
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Aug. 27, 2013
Pennsylvania Office Portfolio [Member]
Jun. 30, 2013
Pennsylvania Office Portfolio [Member]
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Sep. 30, 2013
Pennsylvania Office Portfolio [Member]
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                            
Number of Buildings 24 1 [1]   1 1 1 2 [2]   1 [3] 1 1     15 [4],[5]
Rentable Square Feet 3,006,409 248,400 [1]   204,057 286,628 75,000 188,103 [2]   63,213 [3] 145,487 132,010     1,663,511 [4],[5]
Net Sales Proceeds $ 390,615,000 $ 16,131,000 [1]   $ 70,967,000 $ 31,775,000 $ 5,640,000 $ 19,041,000 [2]   $ 6,101,000 [3] $ 15,858,000 $ 17,677,000     $ 207,425,000 [4],[5]
Net Book Value 305,685,000 16,005,000 [1]   51,308,000 14,852,000 3,713,000 19,721,000 [2]   5,278,000 [3] 17,027,000 13,522,000     164,259,000 [4],[5]
Realized Gain (loss) 84,930,000 126,000 [1]   19,659,000 16,923,000 1,927,000 (680,000) [2]   823,000 [3] (1,169,000) 4,155,000     43,166,000 [4],[5]
Valuation allowance     7,100,000                      
Note receivable   5,000,000                        
Note receivable, net present value 22,047,000 3,600,000                        
Mortgage loan, maturity period   10 years                   2 years    
Impairments 23,851,000             8,400,000            
Loss from early extinguishment of debt $ 703,000                          
Number of impaired properties                         5  
Number of land parcels sold 3                          
[1] The Company recognized a valuation allowance of $7.1 million on this property at December 31, 2012. In connection with the sale, the Company provided an interest-free note receivable to the buyer of $5 million (with a net present value of $3.6 million at September 30, 2013) which matures in ten years and requires monthly payments of principal. See Note 5: Deferred charges, goodwill and other assets.
[2] The Company recorded an $8.4 million impairment charge on these properties at December 31, 2012. The Company has retained a subordinated interest in these properties.
[3] The property was encumbered by a mortgage loan which was satisfied by the Company at the time of the sale. The Company incurred $0.7 million in costs for the debt satisfaction, which was included in discontinued operations: loss from early extinguishment of debt for the nine months ended September 30, 2013.
[4] In order to reduce the carrying value of five of the properties to their estimated fair market values, the Company recorded impairment charges of $23.9 million at June 30, 2013. The fair value used in the impairment charges was based on the purchase and sale agreement for the properties ultimately sold.
[5] The portfolio sale also included three developable land parcels.