Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity (Stock Compensation) (Narrative) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity (Stock Compensation) (Narrative) (Details)
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2012
Restricted Stock [Member]
Jun. 30, 2011
Restricted Stock [Member]
Jun. 30, 2012
Contingently Issuable Shares [Member]
Jun. 30, 2012
Maximum [Member]
Jun. 30, 2012
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted Stock Award vesting period           7 years 1 year
Unvested restricted stock outstanding 105,843 187,447 105,843 157,681      
Restricted stock awards unvested shares outstanding performance contingent         40,877