Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Earnings Per Share/Unit) (Narrative) (Details) - $ / shares |
3 Months Ended | 12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||
| Anti-dilutive securities excluded from the computation of earnings per share | 0 | 405,000 | 10,000 | |||||||||
| Unvested restricted stock outstanding | 145,278 | 136,220 | 145,278 | 136,220 | 346,946 | 153,560 | ||||||
| Dividends declared per common share | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.60 | $ 0.60 | $ 0.75 | |
| Common unit distribution per unit declared | $ 0.60 | $ 0.60 | $ 0.75 | |||||||||
| Unvested Restricted Stock [Member] | ||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||
| Unvested restricted stock outstanding | 120,245 | 98,669 | 120,245 | 98,669 | 136,946 | |||||||
| X | ||||||||||
- Definition Common Unit Distributions Per Unit Declared No definition available.
|
| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|