Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Stock Options Plans) (Narrative) (Details)
|
|
3 Months Ended |
6 Months Ended |
12 Months Ended |
|
|
Jun. 05, 2015
item
$ / shares
shares
|
Jun. 30, 2017
USD ($)
|
Jun. 30, 2016
USD ($)
|
Jun. 30, 2017
USD ($)
shares
|
Jun. 30, 2016
USD ($)
shares
|
Dec. 31, 2016 |
May 31, 2013
shares
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
| Weighted average remaining contractual life |
|
|
|
7 years 10 months 24 days
|
|
8 years 4 months 24 days
|
|
| Share price | $ / shares |
$ 17.31
|
|
|
|
|
|
|
| Options exercised |
|
|
|
0
|
0
|
|
|
| Stock options expense | $ |
|
$ 116,000
|
$ 183,000
|
$ 232,000
|
$ 367,000
|
|
|
| Shares Under Options - Granted |
800,000
|
|
|
|
|
|
|
| Common stock trade share price | $ / shares |
$ 25.00
|
|
|
|
|
|
|
| Annual installments | item |
3
|
|
|
|
|
|
|
| Exercisable period |
|
|
|
10 years
|
|
|
|
| Common stock trading days |
|
|
|
30 days
|
|
|
|
| Three Equal Annual Installment [Member] |
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
| Shares Under Options - Granted |
400,000
|
|
|
|
|
|
|
| Common Stock Trades [Member] |
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
| Shares Under Options - Granted |
400,000
|
|
|
|
|
|
|
| 2013 Incentive Stock Plan [Member] |
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
| Reserved stocks for issuance |
|
|
|
|
|
|
4,600,000
|