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Investment in Unconsolidated Joint Ventures (CF Murfreesboro Associates) (Details) (CF Murfreesboro Associates [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
sqft
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment, Ownership Percentage 5000.00%us-gaap_EquityMethodInvestmentOwnershipPercentage  
Company's share of gain on sale of equity investee property $ 23,500cuz_CompanysShareOfGainOnSaleOfEquityInvesteeProperty  
Retail [Member]    
Schedule of Equity Method Investments [Line Items]    
Square footage of real estate property (square feet)   751,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= cuz_RetailMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CfMurfreesboroAssociatesMember