XML 45 R34.htm IDEA: XBRL DOCUMENT
v3.21.1

Mortgage Loans Payable and Unsecured Credit Facility (Schedule of Debt and Finance Lease Obligations Related to Continuing Operations) (Parenthetical) (Details) |  | 3 Months Ended
--- | --- | ---
Aug. 04, 2020 | Mar. 31, 2021
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Line of credit facility extension allowed period | 1 year | 1 year

X
- Definition Line of credit facility extension allowed period. + References No definition available. + Details
Name: | cdr_LineOfCreditFacilityExtensionAllowedPeriod
Namespace Prefix: | cdr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |