Annual report pursuant to Section 13 and 15(d)

Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Reconciliation Of Shares Used In Basic EPS Calculation To Shares Used In Diluted EPS Calculation) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Reconciliation Of Shares Used In Basic EPS Calculation To Shares Used In Diluted EPS Calculation) (Details)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]      
Basic EPS shares 86,047 79,224 74,318
Add: Operating Partnership - common units 12,808 13,149 14,028
Stock options 18 44 1
Restricted Stock Awards 89 60 42
Diluted EPS Shares 98,962 92,477 88,389