Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Restricted Stock Awards And Performance Share Units/TSR-Based Awards) (Narrative) (Details) - USD ($)
$ in Millions |
|
9 Months Ended |
|
|
Jun. 05, 2015 |
Sep. 30, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Unvested restricted stock outstanding |
|
107,749
|
136,220
|
|
| Shares granted |
|
36,870
|
|
|
| Shares issued |
|
4,299,000
|
|
|
| Restricted Stock [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Unvested restricted stock outstanding |
|
82,716
|
|
|
| Restricted Stock [Member] | 2013 Incentive Stock Plan [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Shares granted |
37,550.54
|
|
|
|
| Performance period |
|
3 years
|
|
|
| Restricted Stock [Member] | Minimum [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Stock compensation vesting period |
|
1 year
|
|
|
| Restricted Stock [Member] | Maximum [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Stock compensation vesting period |
|
7 years
|
|
|
| Unvested Restricted Stock [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Unvested restricted stock outstanding |
|
82,716
|
|
99,006
|
| Total Stockholder Return Based Awards [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Total unrecognized compensation cost |
|
$ 0.5
|
|
|
| Total unrecognized compensation cost, period of recognition |
|
6 months
|
|
|
| Performance Shares [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Total unrecognized compensation cost |
|
$ 0.8
|
|
|
| Total unrecognized compensation cost, period of recognition |
|
1 year 8 months 12 days
|
|
|
| Performance Shares [Member] | 2013 Incentive Stock Plan [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Shares granted |
112,651.64
|
|
|
|
| Performance period |
|
3 years
|
|
|
| Performance Shares [Member] | Minimum [Member] | 2013 Incentive Stock Plan [Member] | Three Years Period Award [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Percentage of shares vested |
0.00%
|
|
|
|
| Performance Shares [Member] | Maximum [Member] | 2013 Incentive Stock Plan [Member] | Three Years Period Award [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Percentage of shares vested |
150.00%
|
|
|
|