Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Reconciliation Of Shares Used In Basic EPS Calculation To Shares Used In Diluted EPS Calculation) (Details) - shares shares in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
|
| Stockolders Equity [Line Items] | ||
| Basic EPS shares | 90,616 | 90,498 |
| Add: Operating Partnership - common and vested LTIP units | 9,567 | 10,242 |
| Restricted Stock Awards | 66 | |
| Stock Options | 137 | |
| Diluted EPS Shares | 100,183 | 100,943 |
| Mack-Cali Realty LP [Member] | ||
| Stockolders Equity [Line Items] | ||
| Basic EPU units | 100,183 | 100,740 |
| Restricted Stock Awards | 66 | |
| Stock Options | 137 | |
| Diluted EPU Units | 100,183 | 100,943 |