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, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]        
Income (loss) from continuing operations attributable to common shareholders $ 1,982 $ (38,894) $ 37,807 $ (24,249)
(Deduct) add: Noncontrolling interest in Operating Partnership 248 (5,314) 4,754 (3,295)
Income (loss) from continuing operations for diluted earnings per share 2,230 (44,208) 42,561 (27,544)
Income from discontinued operations for diluted earnings per share   49,485   72,218
Net income (loss) available to common shareholders $ 2,230 $ 5,277 $ 42,561 $ 44,674
Weighted average common shares 100,052 99,787 100,014 99,778
Income from continuing operations available to common shareholders $ 0.02 $ (0.44) $ 0.43 $ (0.28)
Income from discontinued operations available to common shareholders   $ 0.49   $ 0.73
Net income available to common shareholders $ 0.02 $ 0.05 $ 0.43 $ 0.45