Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Restricted Stock Awards And Performance Share Units) (Narrative) (Details) - USD ($)
$ in Millions |
|
6 Months Ended |
|
|
Jun. 05, 2015 |
Jun. 30, 2017 |
Dec. 31, 2016 |
Jun. 30, 2016 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Unvested restricted stock outstanding |
|
109,286
|
145,278
|
|
| Shares granted |
|
59,985
|
|
|
| Restricted Stock [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Unvested restricted stock outstanding |
|
96
|
|
|
| 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 |
|
96,769
|
|
86,403
|
| Total Stockholder Return Based Awards [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Total unrecognized compensation cost |
|
$ 2.1
|
|
|
| Total unrecognized compensation cost, period of recognition |
|
1 year 3 months 18 days
|
|
|
| Performance Shares [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 |
|
10 months 24 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%
|
|
|
|