Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share Tables - Basic 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] | ||||
| Net income | $ 54,366 | $ 39,389 | $ 123,135 | $ 36,064 |
| Add: Noncontrolling interest in consolidated joint ventures | (311) | 373 | 395 | 863 |
| Add (deduct): Noncontrolling interest in Operating Partnership | (5,662) | (4,383) | (12,946) | (4,069) |
| Net income available to common shareholders | $ 48,393 | $ 35,379 | $ 110,584 | $ 32,858 |
| Weighted average common shares | 89,740 | 89,244 | 89,731 | 89,218 |
| Net income available to common shareholders | $ 0.54 | $ 0.40 | $ 1.23 | $ 0.37 |