v2.4.1.9
Plant and equipment, net (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]      
Plant and equipment, gross $ 56us-gaap_PropertyPlantAndEquipmentGross $ 595us-gaap_PropertyPlantAndEquipmentGross  
Less: accumulated depreciation (42)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (372)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment  
Plant and equipment, net 14us-gaap_PropertyPlantAndEquipmentNet 223us-gaap_PropertyPlantAndEquipmentNet  
Depreciation 19us-gaap_Depreciation 76us-gaap_Depreciation 69us-gaap_Depreciation
Leasehold improvements [Member]      
Property, Plant and Equipment [Line Items]      
Plant and equipment, gross 36us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
36us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
 
Machinery equipment [Member]      
Property, Plant and Equipment [Line Items]      
Plant and equipment, gross 1us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
447us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
 
Vehicles and office equipment [Member]      
Property, Plant and Equipment [Line Items]      
Plant and equipment, gross $ 19us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_VehiclesMember
$ 112us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_VehiclesMember