Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share) (Narrative) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share) (Narrative) (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Anti-dilutive securities excluded from the computation of earnings per share   15,000 10,000    
Dividends declared per common share $ 0.15 $ 0.30 $ 0.45 $ 0.60  
Unvested restricted stock outstanding 178,816   178,816   153,560 [1]
Restricted Stock [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unvested restricted stock outstanding 304,816 352,358 304,816 352,358  
[1] Includes 63,933 Performance Shares which were legally granted in 2013 for which the 2013 performance goals were not met, which may be earned if subsequent years’ performance goals are met.