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, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
| Mack-Cali Realty Corporation Stockholders' Equity [Abstract] | ||||
| Net income available to common shareholders | $ 35,379 | $ 51,123 | $ 32,858 | $ 35,825 |
| Add (deduct): Noncontrolling interest in Operating Partnership | 4,383 | 6,514 | 4,069 | 4,506 |
| Net income (loss) for diluted earnings per share | $ 39,762 | $ 57,637 | $ 36,927 | $ 40,331 |
| Weighted average common shares | 100,314 | 100,023 | 100,313 | 99,964 |
| Net income available to common unitholders | $ 0.40 | $ 0.58 | $ 0.37 | $ 0.40 |