Annual report pursuant to Section 13 and 15(d)

Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share Tables - Diluted Computation Of EPS) (Details)

v2.4.1.9
Mack-Cali Realty Corporation Stockholders' Equity (Earnings Per Share Tables - Diluted Computation Of EPS) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Mack-Cali Realty Corporation Stockholders' Equity [Abstract]                      
Income (loss) from continuing operations attributable to common shareholders                 $ 28,567us-gaap_IncomeLossFromContinuingOperations $ (77,028)us-gaap_IncomeLossFromContinuingOperations $ 33,277us-gaap_IncomeLossFromContinuingOperations
(Deduct) add: Noncontrolling interest in Operating Partnership (1,152)us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable 248us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable 6,514us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable (2,008)us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable (7,167)us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable (5,313)us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable 1,048us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable 973us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable 3,602us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable (10,459)us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable 4,619us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable
Income (loss) from continuing operations for diluted earnings per share                 32,169cli_IncomeLossFromContinuingOperationsDiluted (87,487)cli_IncomeLossFromContinuingOperationsDiluted 37,896cli_IncomeLossFromContinuingOperationsDiluted
Income from discontinued operations for diluted earnings per share         (1,568)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 49,478us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 17,585us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 5,133us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax   70,628us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 8,703us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Net income (loss) available to common shareholders                 $ 32,169us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted $ (16,859)us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted $ 46,599us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Weighted average common shares                 100,041us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 99,785us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 99,996us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Income from continuing operations available to common shareholders $ (0.10)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.02us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.58us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ (0.17)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ (0.60)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ (0.45)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.09us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.08us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.32us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ (0.88)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.38us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Income from discontinued operations available to common shareholders         $ (0.02)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare $ 0.50us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare $ 0.17us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare $ 0.05us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare   $ 0.71us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare $ 0.09us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
Net income available to common shareholders $ (0.10)us-gaap_EarningsPerShareDiluted $ 0.02us-gaap_EarningsPerShareDiluted $ 0.58us-gaap_EarningsPerShareDiluted $ (0.17)us-gaap_EarningsPerShareDiluted $ (0.62)us-gaap_EarningsPerShareDiluted $ 0.05us-gaap_EarningsPerShareDiluted $ 0.26us-gaap_EarningsPerShareDiluted $ 0.13us-gaap_EarningsPerShareDiluted $ 0.32us-gaap_EarningsPerShareDiluted $ (0.17)us-gaap_EarningsPerShareDiluted $ 0.47us-gaap_EarningsPerShareDiluted