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
Mar. 31, 2013
Mar. 31, 2012
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]    
Income from continuing operations available to common shareholders $ 9,889 $ 20,496
Add: Noncontrolling interest in Operating Partnership 1,365 2,846
Income from continuing operations for diluted earnings per share 11,254 23,342
Income (loss) from discontinued operations for diluted earnings per share 1,897 6,004
Net income available to common shareholders $ 13,151 $ 29,346
Weighted average common shares 99,849 100,062
Income from continuing operations available to common shareholders $ 0.11 $ 0.23
Income (loss) from discontinued operations available to common shareholders $ 0.02 $ 0.06
Net income available to common shareholders $ 0.13 $ 0.29