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 ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]        
Net income available to common shareholders $ 35,379 $ 51,123 $ 32,858 $ 35,825
Add (deduct): Noncontrolling interest in Operating Partnership 4,383 6,514 4,069 4,506
Net income (loss) for diluted earnings per share $ 39,762 $ 57,637 $ 36,927 $ 40,331
Weighted average common shares 100,314 100,023 100,313 99,964
Net income available to common unitholders $ 0.40 $ 0.58 $ 0.37 $ 0.40