Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share Tables - Basic Computation Of EPS) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]    
Net loss $ (3,325) $ (17,628)
Add: Noncontrolling interest in consolidated joint ventures 490 322
Add (deduct): Noncontrolling interest in Operating Partnership 314 2,008
Net loss available to common shareholders $ (2,521) $ (15,298)
Weighted average common shares 89,192 88,289
Net loss available to common shareholders $ (0.03) $ (0.17)