Quarterly report pursuant to Section 13 or 15(d)

Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Net Income Available To Common Shareholders) (Details)

v3.10.0.1
Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Net Income Available To Common Shareholders) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Segment Reporting Information [Line Items]        
Net operating income $ 41,904 $ 57,591 $ 85,992 $ 110,121
Depreciation and amortization (41,413) (57,762) (82,710) (105,393)
Realized gains (losses) and unrealized losses on disposition of rental property, net 1,010 (38,954) 59,196 (33,448)
Gain on sale of investment in unconsolidated joint venture       12,563
Loss from extinguishment of debt, net     (10,289) (239)
Net income (loss) 1,501 (39,125) 52,189 (16,396)
Noncontrolling interest in consolidated joint ventures 95 181 125 418
Noncontrolling interest in Operating Partnership 142 4,296 (4,741) 2,001
Redeemable noncontrolling interest (2,989) (2,682) (5,788) (3,474)
Net income (loss) available to common shareholders (1,251) (37,330) 41,785 (17,451)
Mack-Cali Realty LP [Member]        
Segment Reporting Information [Line Items]        
Net operating income 41,904 57,591 85,992 110,121
Depreciation and amortization (41,413) (57,762) (82,710) (105,393)
Realized gains (losses) and unrealized losses on disposition of rental property, net 1,010 (38,954) 59,196 (33,448)
Gain on sale of investment in unconsolidated joint venture       12,563
Loss from extinguishment of debt, net     (10,289) (239)
Net income (loss) 1,501 (39,125) 52,189 (16,396)
Noncontrolling interest in consolidated joint ventures 95 181 125 418
Redeemable noncontrolling interest (2,989) (2,682) (5,788) (3,474)
Net income (loss) available to common shareholders $ (1,393) $ (41,626) $ 46,526 $ (19,452)