Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share Tables - Diluted Computation Of EPS) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share Tables - Diluted Computation Of EPS) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]        
Income from continuing operations available to common shareholders $ 11,257 $ 17,168 $ 33,671 $ 32,776
Add: Noncontrolling interest in Operating Partnership 1,562 2,536 4,675 4,973
Income from continuing operations for diluted earnings per share 12,819 19,704 38,346 37,749
Income (loss) from discontinued operations for diluted earnings per share (1,316) 189 2,503 329
Net income available to common shareholders $ 11,503 $ 19,893 $ 40,849 $ 38,078
Weighted average common shares 100,069 99,887 100,065 97,963
Income from continuing operations available to common shareholders $ 0.12 $ 0.20 $ 0.38 $ 0.39
Income (loss) from discontinued operations available to common shareholders $ (0.01)   $ 0.03  
Net income available to common shareholders $ 0.11 $ 0.20 $ 0.41 $ 0.39