Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Restricted Stock Awards) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Restricted Stock Awards) (Details)
9 Months Ended
Sep. 30, 2018
$ / shares
shares
Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital [Abstract]  
Shares, Outstanding, Beginning balance | shares 108,318
Shares, Granted | shares 40,185
Shares, Vested | shares (72,502)
Shares, Cancelled | shares (8,712)
Shares, Outstanding, Ending balance | shares 67,289
Weighted-Average Grant-Date Fair Value, Outstanding beginning balance | $ / shares $ 25.49
Weighted-Average Grant-Date Fair Value, Granted | $ / shares 20.16
Weighted-Average Grant-Date Fair Value, Vested | $ / shares 25.33
Weighted-Average Grant-Date Fair Value, Cancelled | $ / shares 25.83
Weighted-Average Grant-Date Fair Value, Outstanding ending balance | $ / shares $ 22.43