Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Net Income Available To Common Shareholders) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
Mar. 31, 2021 |
Mar. 31, 2020 |
| Segment Reporting Information [Line Items] |
|
|
| Net operating income |
$ 8,364
|
$ 11,256
|
| Depreciation and amortization |
(28,173)
|
(33,895)
|
| Land and other impairments |
(413)
|
(5,263)
|
| Realized gains (losses) and unrealized gains (losses) on disposition of rental property, net |
|
(7,915)
|
| Gain on disposition of developable land |
|
4,813
|
| Income (loss) from continuing operations |
(20,222)
|
(31,004)
|
| Income from discontinued operations |
10,962
|
20,906
|
| Realized gains (losses) and unrealized gains (losses) on disposition of rental property and impairments, net |
22,781
|
(27,746)
|
| Total discontinued operations, net |
33,743
|
(6,840)
|
| Net income (loss) |
13,521
|
(37,844)
|
| Noncontrolling interests in consolidated joint ventures |
1,335
|
176
|
| Noncontrolling interests in Operating Partnership |
2,305
|
3,562
|
| Noncontrolling interests in Operating Partnership in discontinued operations |
(3,067)
|
653
|
| Redeemable noncontrolling interests |
(6,471)
|
(6,471)
|
| Net income (loss) available to common shareholders |
7,623
|
(39,924)
|
| Mack-Cali Realty LP [Member] |
|
|
| Segment Reporting Information [Line Items] |
|
|
| Net operating income |
8,364
|
11,256
|
| Depreciation and amortization |
(28,173)
|
(33,895)
|
| Land and other impairments |
(413)
|
(5,263)
|
| Realized gains (losses) and unrealized gains (losses) on disposition of rental property, net |
|
(7,915)
|
| Gain on disposition of developable land |
|
4,813
|
| Income (loss) from continuing operations |
(20,222)
|
(31,004)
|
| Income from discontinued operations |
10,962
|
20,906
|
| Realized gains (losses) and unrealized gains (losses) on disposition of rental property and impairments, net |
22,781
|
(27,746)
|
| Total discontinued operations, net |
33,743
|
(6,840)
|
| Net income (loss) |
13,521
|
(37,844)
|
| Noncontrolling interests in consolidated joint ventures |
1,335
|
176
|
| Redeemable noncontrolling interests |
(6,471)
|
(6,471)
|
| Net income (loss) available to common shareholders |
$ 8,385
|
$ (44,139)
|