Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Stock Option Plans) (Details) $ / shares in Units, $ in Thousands |
6 Months Ended |
|---|---|
|
Jun. 30, 2016
USD ($)
$ / shares
shares
| |
| Mack-Cali Realty Corporation Stockholders' Equity [Abstract] | |
| Shares Under Options - Outstanding, beginning balance | shares | 805,000 |
| Shares Under Options - Outstanding, ending balance | shares | 805,000 |
| Shares Under Options - Options exercisable | shares | 138,334 |
| Shares Under Options - Available for grant | shares | 2,724,820 |
| Weighted Average Exercise Price - Outstanding, beginning balance | $ / shares | $ 17.33 |
| Weighted Average Exercise Price - Outstanding, ending balance | $ / shares | $ 17.33 |
| Aggregate Intrinsic Value, Outstanding, beginning balance | $ | $ 4,843 |
| Aggregate Intrinsic Value, Outstanding, ending balance | $ | $ 7,781 |
| Outstanding stock option price range, lower range | $ / shares | $ 17.31 |
| Outstanding stock option price range, upper range | $ / shares | $ 21.25 |