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Equipment (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Schedule of company's equipment    
Equipment, gross $ 25,783us-gaap_PropertyPlantAndEquipmentGross $ 22,715us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation (14,826)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (10,848)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Equipment, net 10,957us-gaap_PropertyPlantAndEquipmentNet 11,867us-gaap_PropertyPlantAndEquipmentNet
Computer equipment and software [Member]    
Schedule of company's equipment    
Equipment, gross 22,786us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sgbx_ComputerAndSoftwareMember
20,324us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sgbx_ComputerAndSoftwareMember
Furniture and other Equipment [Member]    
Schedule of company's equipment    
Equipment, gross $ 2,997us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sgbx_FurnitureAndOtherEquipmentMember
$ 2,391us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sgbx_FurnitureAndOtherEquipmentMember