Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Intangible Assets
In-place leases, net of accumulated amortization of $72,311 and $62,302 in 2015 and 2014, respectively	$ 137,574	$ 147,360
Above-market tenant leases, net of accumulated amortization of $15,284 and $13,748 in 2015 and 2014, respectively	11,278	12,017
Goodwill	3,867us-gaap_Goodwill	3,867us-gaap_Goodwill	4,100us-gaap_Goodwill	4,131us-gaap_Goodwill
Intangible Assets, Net (Including Goodwill)	152,719	163,244
In-place leases accumulated amortization		51,957		26,239
Above-market tenant leases accumulated amortization		12,990		11,284
Below-market ground lease accumulated amortization		$ 0		$ 21

Accumulated amortization of finite-lived intangible asset, acquired-in-place leases.

No definition available.

Name:	cuz_AccumulatedAmortizationOfFiniteLivedIntangibleAssetAcquiredInPlaceLeases
Namespace Prefix:	cuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Accumulated amortization of finite-lived intangible assets, above market leases.

+ References

No definition available.

+ Details

Name:	cuz_AccumulatedAmortizationOfFiniteLivedIntangibleAssetsAboveMarketLeases
Namespace Prefix:	cuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Accumulated Amortization of Finite Lived Intangible Assets Below Market Ground Leases

+ References

No definition available.

+ Details

Name:	cuz_AccumulatedAmortizationofFiniteLivedIntangibleAssetsBelowMarketGroundLeases
Namespace Prefix:	cuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the carrying value of identifiable intangible assets established upon acquisition based on a favorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date.

+ References

No definition available.

+ Details

Name:	cuz_FiniteLivedIntangibleAssetAboveMarketLeasesNet
Namespace Prefix:	cuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

+ References

No definition available.

+ Details

Name:	us-gaap_IntangibleAssetsNetIncludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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