Debt Instrument, Extension Period

No definition available.

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- Definition

Debt Instrument, Number Of Extensions

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt To Be Repaid Upon Sale Of Related Properties, Term

+ References

No definition available.

+ Details

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Namespace Prefix:	cdor_
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Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Accordion Feature, Additional Borrowing Capacity Available

+ References

No definition available.

+ Details

Name:	cdor_LineOfCreditFacilityAccordionFeatureAdditionalBorrowingCapacityAvailable
Namespace Prefix:	cdor_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Remaining Borrowing Capacity, Gross

+ References

No definition available.

+ Details

Name:	cdor_LineOfCreditFacilityRemainingBorrowingCapacityGross
Namespace Prefix:	cdor_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number Of Loans Not Refinanced During Period

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of properties in collateral pool

+ References

No definition available.

+ Details

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Namespace Prefix:	cdor_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Long-Term Debt (Narrative) (Details)					3 Months Ended
Long-Term Debt (Narrative) (Details)	Mar. 30, 2017 USD ($)	Mar. 29, 2017 USD ($)	Mar. 24, 2017 USD ($)	Mar. 01, 2017 USD ($) loan property item	Mar. 31, 2017 USD ($) property	May 11, 2017 USD ($)
Debt Instrument [Line Items]
Debt to be repaid upon sale of related properties, term					1 year
KeyBank Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date of debt					Mar. 01, 2020
Line of credit facility, maximum borrowing capacity				$ 90,000,000
Available borrowing capacity, gross				41,050,000	$ 66,461,000
Line of credit facility, accordion feature				$ 400,000,000		$ 400,000,000
Number of properties in collateral pool \| property				14	15
Number of loan extensions \| item				2
Extension period				1 year
Amount borrowed				$ 34,250,000
Payments on line of credit	$ 6,440,000	$ 37,000,000
Proceeds from line of credit			$ 54,750,000
Subsequent Event [Member] \| KeyBank Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 150,000,000
Variable Rate Debt [Member] \| Multiple Loans Western Alliance Bank [Member]
Debt Instrument [Line Items]
Number of loans not refinanced during period \| loan				2
Fixed Rate Debt [Member] \| Multiple Loans Great Western Bank [Member]
Debt Instrument [Line Items]
Number of loans not refinanced during period \| loan				2
Minimum [Member] \| LIBOR [Member] \| KeyBank Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread				2.25%	2.25%
Minimum [Member] \| Base Rate [Member] \| KeyBank Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread				1.25%	2.00%
Maximum [Member] \| LIBOR [Member] \| KeyBank Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread				3.00%	3.00%
Maximum [Member] \| Base Rate [Member] \| KeyBank Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread				2.00%	2.50%