Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Stock Option Plans) (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 05, 2015 |
Jun. 30, 2015 |
|
| Mack-Cali Realty Corporation Stockholders' Equity [Abstract] | ||
| Shares Under Options - Outstanding, beginning balance | 10,000 | |
| Shares under options - Granted | 800,000 | 800,000 |
| Shares Under Options - Outstanding, ending balance | 810,000 | |
| Shares Under Options - Options exercisable | 5,000 | |
| Shares Under Options - Available for grant | 3,413,699 | |
| Weighted Average Exercise Price - Outstanding, beginning balance | $ 33.36 | |
| Weighted Average Exercise Price - Granted | 17.31 | |
| Weighted Average Exercise Price - Outstanding, ending balance | $ 17.51 | |
| Aggregate Intrinsic Value, Outstanding, ending balance | $ 746 | |
| Outstanding stock option price range, lower range | $ 17.31 | |
| Outstanding stock option price range, upper range | $ 45.47 |