Fair Value Measurements And Derivative Instruments (Schedule Of Impairment And Recovery Of Previously Recorded Impairment) (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017 USD ($) property	Sep. 30, 2016 USD ($) property	Sep. 30, 2017 USD ($) property	Sep. 30, 2016 USD ($) property
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of hotels \| property	4	3	6	3
Impairment (loss) recovery, Continuing operations, Total net impairment loss \| $	$ (848)	$ (343)	$ (1,598)	$ (1,257)
Held For Sale [Member] \| Impairment Loss [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of hotels \| property	2		2
Impairment (loss) recovery, Continuing operations, Held for sale hotels \| $	$ (895)		$ (895)
Sold [Member] \| Impairment Loss [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of hotels \| property		3	2	3
Impairment (loss) recovery, Continuing operations, Sold hotels \| $		$ (343)	$ (783)	$ (1,257)
Sold [Member] \| Impairment Recovery [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of hotels \| property	2		2
Impairment (loss) recovery, Continuing operations, Sold hotels \| $	$ 47		$ 80

Impairment of Long-Lived Assets Sold

No definition available.

Name:	cdor_ImpairmentOfLongLivedAssetsSold
Namespace Prefix:	cdor_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number Of Impaired Properties

+ References

No definition available.

+ Details

Name:	cdor_NumberOfImpairedProperties
Namespace Prefix:	cdor_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

+ Details

Name:	us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_MajorPropertyClassAxis=cdor_HeldForSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=cdor_ImpairmentLossMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorPropertyClassAxis=cdor_SoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=cdor_RecoveryOfImpairmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: