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)

v3.19.2
Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Net Income Available To Common Shareholders) (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Segment Reporting Information [Line Items]        
Net operating income $ 36,211,000 $ 41,904,000 $ 75,738,000 $ 85,992,000
Depreciation and amortization (49,352,000) (41,413,000) (97,398,000) (82,710,000)
Property impairments (5,802,000)   (5,802,000)  
Land impairment (2,499,000)   (2,499,000)  
Gain on change of control of interests     13,790,000  
Realized gains (losses) and unrealized losses on disposition of rental property, net 255,000 1,010,000 268,364,000 59,196,000
Gain on disposition of developable land 270,000   270,000  
Gain on sale of investment in unconsolidated joint venture     903,000  
Gain (loss) from extinguishment of debt, net 588,000 0 1,899,000 (10,289,000)
Net income (loss) (20,329,000) 1,501,000 255,265,000 52,189,000
Noncontrolling interests in consolidated joint ventures 847,000 95,000 2,095,000 125,000
Noncontrolling interests in Operating Partnership 2,434,000 142,000 (25,246,000) (4,741,000)
Redeemable noncontrolling interests (5,006,000) (2,989,000) (9,673,000) (5,788,000)
Net income (loss) available to common shareholders (22,054,000) (1,251,000) 222,441,000 41,785,000
Mack-Cali Realty LP [Member]        
Segment Reporting Information [Line Items]        
Net operating income 36,211,000 41,904,000 75,738,000 85,992,000
Depreciation and amortization (49,352,000) (41,413,000) (97,398,000) (82,710,000)
Property impairments (5,802,000)   (5,802,000)  
Land impairment (2,499,000)   (2,499,000)  
Gain on change of control of interests     13,790,000  
Realized gains (losses) and unrealized losses on disposition of rental property, net 255,000 1,010,000 268,364,000 59,196,000
Gain on disposition of developable land 270,000   270,000  
Gain on sale of investment in unconsolidated joint venture     903,000  
Gain (loss) from extinguishment of debt, net 588,000   1,899,000 (10,289,000)
Net income (loss) (20,329,000) 1,501,000 255,265,000 52,189,000
Noncontrolling interests in consolidated joint ventures 847,000 95,000 2,095,000 125,000
Redeemable noncontrolling interests (5,006,000) (2,989,000) (9,673,000) (5,788,000)
Net income (loss) available to common shareholders $ (24,488,000) $ (1,393,000) $ 247,687,000 $ 46,526,000