Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Earnings Per Share Tables - Diluted Computation Of EPS) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended |
Mar. 31, 2021 |
Mar. 31, 2020 |
| Stockholders Equity [Line Items] |
|
|
| Net income (loss) from continuing operations available to common shareholders |
$ (24,844)
|
$ (36,541)
|
| Add (deduct): Noncontrolling interests in Operating Partnership |
(2,305)
|
(3,562)
|
| Add (deduct): Redemption value adjustment of redeemable noncontrolling interests in the Operating Partnership unitholders |
(179)
|
(296)
|
| Income (loss) from continuing operations for diluted earnings per share |
(27,328)
|
(40,399)
|
| Income (loss) from discontinued operations for diluted earnings per share |
33,743
|
(6,840)
|
| Net income (loss) available for diluted earnings per share |
$ 6,415
|
$ (47,239)
|
| Weighted average common shares |
99,760
|
100,183
|
| Income (loss) from continuing operations available to common shareholders |
$ (0.28)
|
$ (0.40)
|
| Income (loss) from discontinued operations available to common shareholders |
0.34
|
(0.07)
|
| Net income (loss) available to common shareholders |
$ 0.06
|
$ (0.47)
|
| Mack-Cali Realty LP [Member] |
|
|
| Stockholders Equity [Line Items] |
|
|
| Net income (loss) from continuing operations available to common shareholders |
$ (27,328)
|
$ (40,399)
|
| Income (loss) from discontinued operations for diluted earnings per share |
33,743
|
(6,840)
|
| Net income (loss) available for diluted earnings per share |
$ 6,415
|
$ (47,239)
|
| Weighted average common unit |
99,760
|
100,183
|
| Income (loss) from continuing operations available to common shareholders |
$ (0.28)
|
$ (0.40)
|
| Income (loss) from discontinued operations available to common shareholders |
0.34
|
(0.07)
|
| Net income (loss) available to common shareholders |
$ 0.06
|
$ (0.47)
|