Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Deferred Stock Compensation Plan For Directors) (Narrative) (Details) - shares |
9 Months Ended | ||
|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
| Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital [Abstract] | |||
| Maximum percentage of retainer fee that directors may defer | 100.00% | ||
| Deferred stock units earned | 11,249 | 15,279 | |
| Deferred stock units outstanding | 190,322 | 178,039 | |