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Mack-Cali Realty Corporation Stockholders' Equity (Preferred Stock, Share Repurchase Program, And Dividend Reinvestment And Stock Purchase Plan) (Narrative) (Details) (USD $)
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0 Months Ended |
1 Months Ended |
9 Months Ended |
12 Months Ended |
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Oct. 27, 2011
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Oct. 23, 2012
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Sep. 30, 2012
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Dec. 31, 2011
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Oct. 28, 2011
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| Stock Option Activity [Line Items] |
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| Maximum percentage of outstanding share owned by REIT |
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50.00% |
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| Preferred stock, shares outstanding |
10,000 |
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| Preferred stock, percentage |
8.00% |
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| Amount of depositary shares converted from the preferred shares |
1,000,000 |
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| Depositary shares value, per share |
$ 25 |
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| One depositary share equivalent of one Series C Preferred Stock |
1.00% |
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| Preferred stock, redemption price per share |
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$ 2,500 |
| Write off of preferred stock issuance costs |
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$ 164,000 |
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| Shares purchased and retired |
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394,625 |
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| Aggregate cost of stocks repurchased |
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11,000,000 |
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| Capacity available for additional repurchase of outstanding common stock |
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139,000,000 |
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Repurchase Of Equity [Member]
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| Stock Option Activity [Line Items] |
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| Date share repurchase program was initiated |
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September 2012 |
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| Capacity of share repurchase program |
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150,000,000 |
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Dividend Reinvestment And Stock Purchase Plan [Member]
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| Stock Option Activity [Line Items] |
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| Common stock reserved for future issuance |
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5,500,000 |
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| Monthly cash investment without restriction, maximum |
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5,000 |
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