Quarterly report pursuant to Section 13 or 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
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]    
Basic EPS shares 89,192us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 88,289us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Add: Operating Partnership - common units 11,074cli_CommonUnits 11,587cli_CommonUnits
Diluted EPS Shares 100,266us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 99,876us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding