Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Earnings Per Share Tables - Diluted Computation Of EPS) (Details)

v3.20.1
Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Earnings Per Share Tables - Diluted Computation Of EPS) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Stockolders Equity [Line Items]    
Net income (loss) from continuing operations available to common shareholders $ (37,524) $ 233,952
Add (deduct): Noncontrolling interests in Operating Partnership (3,666) 26,843
Add (deduct): Redemption value adjustment of redeemable noncontrolling interests in Operating Partnership unitholders (296) (357)
Income (loss) from continuing operations for diluted earnings per share (41,486) 260,438
Income (loss) from discontinued operations for diluted earnings per share (5,753) 8,228
Net income (loss) available for diluted earnings per share $ (47,239) $ 268,666
Weighted average common shares 100,183 100,943
Income (loss) from continuing operations available to common shareholders $ (0.41) $ 2.58
Income (loss) from discontinued operations available to common shareholders (0.06) 0.08
Net income (loss) available to common shareholders $ (0.47) $ 2.66
Mack-Cali Realty LP [Member]    
Stockolders Equity [Line Items]    
Net income (loss) from continuing operations available to common shareholders $ (41,486) $ 260,438
Income (loss) from discontinued operations for diluted earnings per share (5,753) 8,228
Net income (loss) available for diluted earnings per share $ (47,239) $ 268,666
Weighted average common unit 100,183 100,943
Income (loss) from continuing operations available to common shareholders $ (0.41) $ 2.58
Income (loss) from discontinued operations available to common shareholders (0.06) 0.08
Net income (loss) available to common shareholders $ (0.47) $ 2.66