Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (Summary Of The Results Of Operations) (Details)

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Investments In Unconsolidated Joint Ventures (Summary Of The Results Of Operations) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Schedule of Equity Method Investments [Line Items]        
Total revenues $ 17,311 $ 12,740 $ 44,369 $ 37,697
Operating and other (9,169) (8,008) (25,428) (23,739)
Depreciation and amortization (2,497) (2,505) (7,285) (8,064)
Interest expense (1,675) (1,704) (5,017) (5,029)
Net income 3,970 523 6,639 865
Company's equity in earnings (loss) of unconsolidated joint ventures 2,418 539 4,751 1,174
Plaza VIII & IX Associates [Member]
        
Schedule of Equity Method Investments [Line Items]        
Total revenues 259 272 723 721
Operating and other (62) (58) (177) (160)
Depreciation and amortization (154) (154) (460) (460)
Net income 43 60 86 101
Company's equity in earnings (loss) of unconsolidated joint ventures 21 31 43 51
Harborside South Pier [Member]
        
Schedule of Equity Method Investments [Line Items]        
Total revenues 12,214 9,558 31,281 28,008
Operating and other (7,600) (6,296) (20,045) (18,860)
Depreciation and amortization (1,366) (1,415) (4,179) (4,254)
Interest expense (1,089) (1,112) (3,289) (3,357)
Net income 2,159 735 3,768 1,537
Company's equity in earnings (loss) of unconsolidated joint ventures 1,080 361 1,884 768
Red Bank Corporate Plaza [Member]
        
Schedule of Equity Method Investments [Line Items]        
Total revenues 851 832 2,497 2,424
Operating and other (247) (231) (663) (601)
Depreciation and amortization (228) (226) (684) (677)
Interest expense (188) (167) (553) (376)
Net income 188 208 597 770
Company's equity in earnings (loss) of unconsolidated joint ventures 94 104 298 385
Gramercy Agreement [Member]
        
Schedule of Equity Method Investments [Line Items]        
Total revenues 1,742 1,340 4,640 4,674
Operating and other (942) (968) (2,822) (2,860)
Depreciation and amortization (596) (449) (1,502) (1,781)
Interest expense (389) (384) (1,163) (1,167)
Net income (185) (461) (847) (1,134)
12 Vreeland [Member]
        
Schedule of Equity Method Investments [Line Items]        
Total revenues 1,012 663 2,258 1,653
Operating and other (291) (93) (579) (145)
Depreciation and amortization (153) (261) (460) (892)
Interest expense (9) (41) (12) (129)
Net income 559 268 1,207 487
Company's equity in earnings (loss) of unconsolidated joint ventures 279 134 603 243
Boston-Downtown Crossing [Member]
        
Schedule of Equity Method Investments [Line Items]        
Operating and other (21) (362) (1,110) (1,113)
Net income (21) (362) (1,110) (1,113)
Company's equity in earnings (loss) of unconsolidated joint ventures (6) (115) (333) (340)
Gale Jefferson [Member]
        
Schedule of Equity Method Investments [Line Items]        
Total revenues 68 75 197 217
Net income 68 75 197 217
Company's equity in earnings (loss) of unconsolidated joint ventures 23 24 63 67
Stamford SM LLC [Member]
        
Schedule of Equity Method Investments [Line Items]        
Total revenues 1,165   2,773  
Operating and other (6)   (32)  
Net income 1,159   2,741  
Company's equity in earnings (loss) of unconsolidated joint ventures $ 927   $ 2,193