Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Restricted Stock Awards) (Details) - $ / shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
|
| Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital [Abstract] | ||
| Shares, Outstanding, Beginning balance | 67,289 | 108,318 |
| Shares, Vested | (968) | (30,033) |
| Shares, Cancelled | (3,872) | |
| Shares, Outstanding, Ending balance | 66,321 | 74,413 |
| Weighted-Average Grant-Date Fair Value, Outstanding beginning balance | $ 22.43 | $ 25.49 |
| Weighted-Average Grant-Date Fair Value, Vested | 25.83 | 26.97 |
| Weighted-Average Grant-Date Fair Value, Cancelled | 25.83 | |
| Weighted-Average Grant-Date Fair Value, Outstanding ending balance | $ 22.38 | $ 24.87 |