Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (Summary Of Company's Equity In Earnings (Loss) Of Unconsolidated Joint Ventures) (Details)

v3.10.0.1
Investments In Unconsolidated Joint Ventures (Summary Of Company's Equity In Earnings (Loss) Of Unconsolidated Joint Ventures) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures $ (687) $ (1,533) $ 833 $ (4,882)
Amortization of basis difference 230 289 809 838
Urby At Harborside [Member]        
Schedule of Equity Method Investments [Line Items]        
Economic tax credit certificate income     $ 2,600  
Period of venture agreement to sell economic tax credit     9 years  
Annual proceeds from economic tax credit     $ 3,000  
Total proceeds from economic tax credit     27,000  
Unconsolidated Joint Venture Multi-Family Properties [Member] | Marbella [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures 21 52 205 261
Unconsolidated Joint Venture Multi-Family Properties [Member] | Metropolitan At 40 Park [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (131) (81) (362) (234)
Unconsolidated Joint Venture Multi-Family Properties [Member] | RiverTrace At Port Imperial [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures 33 52 122 143
Unconsolidated Joint Venture Multi-Family Properties [Member] | Crystal House [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (192) (171) (617) (752)
Unconsolidated Joint Venture Multi-Family Properties [Member] | PI North - Riverwalk C [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (51) (298) (88) (712)
Unconsolidated Joint Venture Multi-Family Properties [Member] | Marbella II [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures 11 25 42 86
Unconsolidated Joint Venture Multi-Family Properties [Member] | Riverpark At Harrison [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (26) (85) (174) (162)
Unconsolidated Joint Venture Multi-Family Properties [Member] | Station House [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (531) (447) (1,443) (1,272)
Unconsolidated Joint Venture Multi-Family Properties [Member] | Urby At Harborside [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (990) (2,053) 157 (5,174)
Unconsolidated Joint Venture Multi-Family Properties [Member] | Liberty Landing [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures       (15)
Unconsolidated Joint Venture Multi-Family Properties [Member] | Hillsborough 206 [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures     15 (25)
Unconsolidated Joint Venture Office Buildings [Member] | Red Bank [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (65) 90 (193) 306
Unconsolidated Joint Venture Office Buildings [Member] | 12 Vreeland Road [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures 119 186 157 317
Unconsolidated Joint Venture Office Buildings [Member] | Offices At Crystal Lake [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures 37 29 57 74
Unconsolidated Joint Venture Other Property [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (687) (1,533) 833 (4,882)
Unconsolidated Joint Venture Other Property [Member] | Riverwalk Retail [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures (20) (23) (65) (60)
Unconsolidated Joint Venture Other Property [Member] | Hyatt Regency Jersey City [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures 1,024 973 2,560 2,310
Unconsolidated Joint Venture Other Property [Member] | Other [Member]        
Schedule of Equity Method Investments [Line Items]        
Company's equity in earnings of unconsolidated joint ventures $ 74 $ 218 $ 460 $ 27