Investment in Unconsolidated Joint Ventures (EP II LLC) (Details) (EP II LLC [Member], USD $)	12 Months Ended
Dec. 31, 2014 Loan
Schedule of Equity Method Investments [Line Items]
Number of possible loan extensions	2cuz_NumberOfPossibleLoanExtensions
Period of loan extension	1 year
Equity Method Investment, Ownership Percentage	75.00%
Maximum Amount Available Under Construction Facility Revised	$ 46,000,000
Mortgage Loans on Real Estate, Carrying Amount of Mortgages	12,700,000
Debt Instrument, Basis Spread on Variable Rate	1.85%
Extension of Mortgage Loans Maturity Conditions	two, one-year periods
Guarantor Obligations, Maximum Exposure, Undiscounted	8,600,000
Equity Method Investments Summarized Financial Information Cash	175,000
LIBOR [Member]
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Description of Variable Rate Basis	LIBOR
Gables Realty Limited [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	25.00%
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 2,900,000
Secured Mortgage Note Payable [Member]
Schedule of Equity Method Investments [Line Items]
Debt Instrument of Equity Investee Maturity Date	Oct. 09, 2016

Debt instrument of equity investee, maturity date.

No definition available.

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- Definition

Equity method investments summarized financial information cash.

+ References

No definition available.

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- Definition

Extension of mortgage loans maturity, conditions.

+ References

No definition available.

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Maximum amount available under construction facility, revised.

+ References

No definition available.

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- Definition

Number of possible loan extensions

+ References

No definition available.

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- Definition

Period of loan extension

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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- Definition

The carrying amount of the outstanding balance due under the mortgage loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule IV)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 29

-Article 12

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule IV

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-29)

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