Quarterly report pursuant to Section 13 or 15(d)

Redeemable Noncontrolling Interests (Schedule Of Changes In The Value Of The Redeemable Noncontrolling InterestsCORRECT) (Details)

v3.7.0.1
Redeemable Noncontrolling Interests (Schedule Of Changes In The Value Of The Redeemable Noncontrolling InterestsCORRECT) (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
Redeemable Noncontrolling Interest [Line Items]  
Income Attributed to Noncontrolling Interests $ (792)
Redemption Value Adjustment (11,790)
NCI at Redemption Value March 31, 2017 202,714
Mack-Cali Realty LP [Member]  
Redeemable Noncontrolling Interest [Line Items]  
Income Attributed to Noncontrolling Interests (792)
Redemption Value Adjustment (11,790)
NCI at Redemption Value March 31, 2017 202,714
Redeemable Noncontrolling Interests [Member]  
Redeemable Noncontrolling Interest [Line Items]  
Balance
Redeemable NCI Issued 201,922
Issuance Costs 10,998
Net 190,924
Income Attributed to Noncontrolling Interests 792
Distributions (792)
Redemption Value Adjustment 11,790
NCI at Redemption Value March 31, 2017 202,714
Redeemable Noncontrolling Interests [Member] | Series A And Series A-1 Preferred Units [Member]  
Redeemable Noncontrolling Interest [Line Items]  
Balance
Redeemable NCI Issued 51,922
Issuance Costs 464
Net 51,458
Income Attributed to Noncontrolling Interests 265
Distributions (265)
Redemption Value Adjustment 729
NCI at Redemption Value March 31, 2017 52,187
Redeemable Noncontrolling Interests [Member] | Rockpoint [Member]  
Redeemable Noncontrolling Interest [Line Items]  
Balance
Redeemable NCI Issued 150,000
Issuance Costs 10,534
Net 139,466
Income Attributed to Noncontrolling Interests 527
Distributions (527)
Redemption Value Adjustment 11,061
NCI at Redemption Value March 31, 2017 $ 150,527