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 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]        
Income from continuing operations available to common shareholders $ 14,057 $ 20,591 $ 47,728 $ 53,367
Add: Noncontrolling interest in Operating Partnership 1,949 3,028 6,624 8,001
Income from continuing operations for diluted earnings per share 16,006 23,619 54,352 61,368
Income (loss) from discontinued operations for diluted earnings per share 255 (104) 2,758 225
Net income available to common shareholders $ 16,261 $ 23,515 $ 57,110 $ 61,593
Weighted average common shares 100,075 99,917 100,071 98,631
Income from continuing operations available to common shareholders $ 0.16 $ 0.24 $ 0.54 $ 0.62
Income (loss) from discontinued operations available to common shareholders     $ 0.03  
Net income available to common shareholders $ 0.16 $ 0.24 $ 0.57 $ 0.62