Noncontrolling Interests In Subsidiaries (Narrative) (Details)
|
|
12 Months Ended |
|
|
Feb. 03, 2017
USD ($)
shares
|
Dec. 31, 2016
USD ($)
property
shares
|
Dec. 31, 2015 |
| Noncontrolling Interest [Line Items] |
|
|
|
| Expiration period |
|
10 years
|
|
| Number of common shares received upon redemption of common units |
|
1
|
|
| Rebalance of ownership percentage | $ |
|
$ 1,400,000
|
|
| Percentage of noncontrolling interest |
|
10.50%
|
10.50%
|
| Participation Rights [Member] |
|
|
|
| Noncontrolling Interest [Line Items] |
|
|
|
| Number of properties | property |
|
3
|
|
| Excess net cash flow remaining after the distribution to the Company |
|
50.00%
|
|
| Internal rate of return |
|
10.00%
|
|
| Subsequent Event [Member] |
|
|
|
| Noncontrolling Interest [Line Items] |
|
|
|
| Percentage of interest in venture |
100.00%
|
|
|
| Mack-Cali Realty LP [Member] | Subsequent Event [Member] | Preferred Units [Member] |
|
|
|
| Noncontrolling Interest [Line Items] |
|
|
|
| Preferred units shares issued |
42,800
|
|
|
| Preferred unit annual rate |
3.50%
|
|
|
| Percentage of interest in venture |
37.50%
|
|
|
| Preferred unit in operating partnership | $ |
$ 1,000
|
|
|
| Convertible preferred units |
28.15
|
|
|
| Shares converted to common units |
1,204,820
|
|
|
| Expiration period |
5 years
|
|
|
| Future Developments [Member] | Participation Rights [Member] |
|
|
|
| Noncontrolling Interest [Line Items] |
|
|
|
| Number of properties | property |
|
1
|
|