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
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Restricted Stock [Member]
Dec. 31, 2011
Restricted Stock [Member]
Mar. 31, 2011
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Dividends declared per common share $ 0.45 $ 0.45      
Unvested restricted stock outstanding     105,843 187,447 157,681