Basis of Presentation Percentage of taxable income distributed (Details)	9 Months Ended
Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Distribution of Taxable Income to Qualify as REIT	90.00%

Percentage of taxable income that must be distributed annually to qualify as a REIT.

No definition available.

Name:	cuz_DistributionOfTaxableIncomeToQualifyAsReit
Namespace Prefix:	cuz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration