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Discontinued Operations And Land Dispositions (Details) (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Discontinued Operations And Land Dispositions [Abstract] |  |  |
Impairment (charges)/reversals | $ (12,258,000) | $ 1,138,000 | $ (22,544,000)
Mortgage loans payable and accrued interest for properties under conveyance process |  | $ 22,900,000 |

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- Definition The charge against earnings in the period to reduce the carrying amount of assets classified as real estate held for sale - discontinued operations to fair value. + References No definition available. + Details
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- Definition Mortgage Loans Payable And Accrued Interest For Conveyance Properties In Process + References No definition available. + Details
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Namespace Prefix: | cdr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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