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
3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]        
Income from continuing operations available to common shareholders $ 20,500 $ 13,039 $ 53,562 $ 42,252
Add: Noncontrolling interest in operating partnership 3,015 2,150 8,031 7,047
Income from continuing operations for diluted earnings per share 23,515 15,189 61,593 49,299
Income (loss) from discontinued operations for diluted earnings per share       4,689
Net income available to common shareholders $ 23,515 $ 15,189 $ 61,593 $ 53,988
Weighted average common shares 99,917 92,464 98,631 92,467
Income from continuing operations available to common shareholders $ 0.24 $ 0.16 $ 0.62 $ 0.53
Income (loss) from discontinued operations available to common shareholders       $ 0.05
Net income available to common shareholders $ 0.24 $ 0.16 $ 0.62 $ 0.58