Annual report pursuant to Section 13 and 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) (USD $)
 12 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2012
Restricted Stock [Member]
Dec. 31, 2012
Restricted Stock [Member]
Minimum [Member]
Dec. 31, 2012
Restricted Stock [Member]
Maximum [Member]
Dec. 31, 2012
Ratified Restricted Stock Awards [Member]
Minimum [Member]
Dec. 31, 2012
Ratified Restricted Stock Awards [Member]
Maximum [Member]
Dec. 31, 2012
Total Stockholder Return Based Awards [Member]
Jan. 31, 2014
Scenario, Forecast [Member]
Ratified Restricted Stock Awards [Member]
Dec. 31, 2013
Scenario, Forecast [Member]
Total Stockholder Return Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Restricted Stock Award vesting period           1 year 7 years 5 years 7 years 5 years    
Unvested restricted stock outstanding 134,328 187,447 239,759 323,088                
Restricted stock awards unvested shares outstanding, performance contingent         40,877              
Awards issued 70,758 [1] 81,736 [2] 111,127 [3]               319,667 5,160
Value of common stock received upon vesting of awards                   $ 1,000    
[1] Included in the 70,758 Restricted Stock Awards granted in 2012 were 42,273 awards granted to the Company’s three executive officers, Mitchell E. Hersh, Barry Lefkowitz and Roger W. Thomas.
[2] Included in the 81,736 Restricted Stock Awards granted in 2011 were 51,970 awards granted to the Company’s four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Michael Grossman.
[3] Included in the 111,127 Restricted Stock Awards granted in 2010 were 51,970 awards granted to the Company’s five executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas, Michael Grossman and Mark Yeager.