Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of General Partner Capital) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of General Partner Capital) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Balance $ 1,486,658  
Common unit distributions (1,696)  
Redeemable noncontrolling interests (4,667) $ (2,799)
Redemption of common units for common stock  
Redemption of common units (6,630)  
Shares issued under Dividend Reinvestment and Stock Purchase Plan 10  
Directors' deferred compensation plan 130  
Other comprehensive income (loss) (4,451)  
Rebalancing of ownership percentage between parent and subsidiaries  
Balance 1,704,018  
General Partner Common Unitholders [Member]    
Balance 1,486,658 1,476,295
Net income 244,495 43,036
Common unit distributions (18,065) (18,027)
Redeemable noncontrolling interests (3,152) (2,754)
Change in noncontrolling interests in consolidated joint ventures (1,958)  
Redemption of common units for common stock 82 3,690
Redemption of common units (1,665)  
Shares issued under Dividend Reinvestment and Stock Purchase Plan 10 28
Directors' deferred compensation plan 130 125
Stock compensation 265 517
Cancellation of unvested LTIP units 2,819  
Other comprehensive income (loss) (4,038) 4,621
Rebalancing of ownership percentage between parent and subsidiaries (1,563) 560
Balance $ 1,704,018 $ 1,508,091