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 Reconciliation Of Shares Used In Basic EPS Calculation To Shares Used In Diluted EPS Calculation) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Reconciliation Of Shares Used In Basic EPS Calculation To Shares Used In Diluted EPS Calculation) (Details) - shares
shares in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Basic EPS shares 89,955 89,721
Add: Operating Partnership - common units 10,384 10,509
Restricted Stock Awards 1 56
Stock Options 297 29
Diluted EPS Shares 100,637 100,315
Mack-Cali Realty LP [Member]    
Basic weighted average units outstanding 100,339 100,230
Restricted Stock Awards 1 56
Stock Options 297 29
Diluted weighted average units outstanding 100,637 100,315