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Investment in Unconsolidated Joint Ventures (CP Venture Two LLC) (Details) (CP Venture Two LLC [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 10.40%us-gaap_EquityMethodInvestmentOwnershipPercentage
Company's share of gain on sale of equity investee property $ 167cuz_CompanysShareOfGainOnSaleOfEquityInvesteeProperty
Retail [Member]  
Schedule of Equity Method Investments [Line Items]  
Number of real estate properties owned by venture (properties) 3cuz_NumberOfRealEstatePropertiesOwnedByEquityInvestee
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= cuz_RetailMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CPVentureTwoLLCMember
Square footage of real estate property (square feet) 934,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= cuz_RetailMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CPVentureTwoLLCMember
Office Building [Member]  
Schedule of Equity Method Investments [Line Items]  
Square footage of real estate property (square feet) 69,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OfficeBuildingMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cuz_CPVentureTwoLLCMember