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, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]    
Basic EPS shares 89,192 88,289
Add: Operating Partnership - common units 11,074 11,587
Diluted EPS Shares 100,266 99,876