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Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Restricted Stock Awards) (Details) (USD $)
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6 Months Ended |
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Jun. 30, 2013
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| Mack-Cali Realty Corporation Stockholders' Equity [Abstract] | |
| Unvested restricted stock outstanding, beginning balance | 134,328 |
| Shares, Granted | 68,139 |
| Shares, Vested | (105,843) |
| Unvested restricted stock outstanding, ending balance | 96,624 |
| Weighted-Average Grant-Date Fair Value, Outstanding beginning balance | $ 31.65 |
| Weighted-Average Grant-Date Fair Value, Granted | $ 28.65 |
| Weighted-Average Grant-Date Fair Value, Vested | $ 33.36 |
| Weighted-Average Grant-Date Fair Value, Outstanding ending balance | $ 27.66 |