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, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
| Segment Reporting Information [Line Items] |
|
|
|
|
|
| Net operating income |
[1] |
$ 57,591
|
$ 47,427
|
$ 110,121
|
$ 90,503
|
| Depreciation and amortization |
|
(57,762)
|
(43,459)
|
(105,393)
|
(86,522)
|
| Gain on change of control of interests |
|
|
5,191
|
|
15,347
|
| Realized gains (losses) and unrealized losses on disposition of rental property, net |
|
(38,954)
|
27,117
|
(33,448)
|
85,717
|
| Gain on sale of investment in unconsolidated joint venture |
|
|
5,670
|
12,563
|
5,670
|
| Gain (loss) from extinguishment of debt, net |
|
|
12,420
|
(239)
|
12,420
|
| Net income (loss) |
|
(39,125)
|
54,366
|
(16,396)
|
123,135
|
| Noncontrolling interest in consolidated joint ventures |
|
181
|
(311)
|
418
|
395
|
| Noncontrolling interest in Operating Partnership |
|
4,296
|
(5,662)
|
2,001
|
(12,946)
|
| Redeemable noncontrolling interest |
|
(2,682)
|
|
(3,474)
|
|
| Net income (loss) available to common shareholders |
|
(37,330)
|
48,393
|
(17,451)
|
110,584
|
| Mack-Cali Realty LP [Member] |
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
| Net operating income |
|
57,591
|
47,427
|
110,121
|
90,503
|
| Depreciation and amortization |
|
(57,762)
|
(43,459)
|
(105,393)
|
(86,522)
|
| Gain on change of control of interests |
|
|
5,191
|
|
15,347
|
| Realized gains (losses) and unrealized losses on disposition of rental property, net |
|
(38,954)
|
27,117
|
(33,448)
|
85,717
|
| Gain on sale of investment in unconsolidated joint venture |
|
|
5,670
|
12,563
|
5,670
|
| Gain (loss) from extinguishment of debt, net |
|
|
12,420
|
(239)
|
12,420
|
| Net income (loss) |
|
(39,125)
|
54,366
|
(16,396)
|
123,135
|
| Noncontrolling interest in consolidated joint ventures |
|
181
|
(311)
|
418
|
395
|
| Redeemable noncontrolling interest |
|
(2,682)
|
|
(3,474)
|
|
| Net income (loss) available to common shareholders |
|
$ (41,626)
|
$ 54,055
|
$ (19,452)
|
$ 123,530
|
|
|