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 |
6 Months Ended |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
| Stockolders Equity [Line Items] |
|
|
|
|
| Net income (loss) available to common shareholders for basic earnings per share |
$ (38,813)
|
$ (4,630)
|
$ 202,530
|
$ 35,652
|
| Add (deduct): Noncontrolling interests in Operating Partnership |
(2,434)
|
(142)
|
25,246
|
4,741
|
| Add (deduct): Redemption value adjustment of redeemable noncontrolling interests in Operating Partnership unitholders |
(1,850)
|
(384)
|
(2,207)
|
(697)
|
| Net income available for diluted earnings per share |
$ (43,097)
|
$ (5,156)
|
$ 225,569
|
$ 39,696
|
| Weighted average common shares |
100,523
|
100,598
|
100,825
|
100,607
|
| Net income (loss) available to common shareholders |
$ (0.43)
|
$ (0.05)
|
$ 2.24
|
$ 0.39
|
| Mack-Cali Realty LP [Member] |
|
|
|
|
| Stockolders Equity [Line Items] |
|
|
|
|
| Net income (loss) available to common shareholders for basic earnings per share |
$ (43,097)
|
$ (5,156)
|
$ 225,569
|
$ 39,696
|
| Net income available for diluted earnings per share |
$ (43,097)
|
$ (5,156)
|
$ 225,569
|
$ 39,696
|
| Weighted average common unit |
100,523
|
100,598
|
100,825
|
100,607
|
| Net income (loss) available to common shareholders |
$ (0.43)
|
$ (0.05)
|
$ 2.24
|
$ 0.39
|