Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Reconciliation Of Shares Used In Basic EPS Calculation To Shares Used In Diluted EPS Calculation) (Details)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]    
Basic EPS shares87,01979,30485,64979,161
Add: Operating Partnership - common units12,79913,07312,86413,196
Stock options15323047
Restricted Stock Awards84558863
Diluted EPS Shares99,91792,46498,63192,467