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Investment in Unconsolidated Joint Ventures (CP Venture Five LLC) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Cp Venture Five LLC [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment, Ownership Percentage   11.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
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= cuz_CpVentureFiveLlcMember
CP Venture Two LLC and CP Venture Five LLC [Domain]    
Schedule of Equity Method Investments [Line Items]    
Gain (Loss) on Sale of Equity Investments $ 37,000us-gaap_GainLossOnSaleOfEquityInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CPVentureTwoLLCandCPVentureFiveLLCMember
 
Retail [Member] | Cp Venture Five LLC [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of real estate properties owned by venture (properties)   5cuz_NumberOfRealEstatePropertiesOwnedByEquityInvestee
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= cuz_RetailMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CpVentureFiveLlcMember
Square footage of real estate property (square feet)   1,200,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= cuz_RetailMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CpVentureFiveLlcMember
Retail [Member] | Suburban Atlanta Georgia [Member] | Cp Venture Five LLC [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of real estate properties owned by venture (properties)   3cuz_NumberOfRealEstatePropertiesOwnedByEquityInvestee
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= cuz_RetailMember
/ cuz_RealEstateAssetLocationAxis
= cuz_SuburbanAtlantaGeorgiaMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CpVentureFiveLlcMember
Retail [Member] | Viera Florida [Member] | Cp Venture Five LLC [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of real estate properties owned by venture (properties)   2cuz_NumberOfRealEstatePropertiesOwnedByEquityInvestee
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= cuz_RetailMember
/ cuz_RealEstateAssetLocationAxis
= cuz_VieraFloridaMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CpVentureFiveLlcMember