Mack-Cali Realty Corporation Stockholders' Equity (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, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Mack-Cali Realty Corporation Stockholders' Equity [Abstract] | ||||
| Income available to common shareholders | $ 48,393 | $ 35,379 | $ 110,584 | $ 32,858 |
| Add (deduct): Noncontrolling interest in Operating Partnership | 5,662 | 4,383 | 12,946 | 4,069 |
| Net income for diluted earnings per share | $ 54,055 | $ 39,762 | $ 123,530 | $ 36,927 |
| Weighted average common shares | 100,401 | 100,314 | 100,359 | 100,313 |
| Net income available to common shareholders | $ 0.54 | $ 0.40 | $ 1.23 | $ 0.37 |