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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Inventories [Line Items]    
Inventories $ 3,879 $ 374
Others [Member]    
Inventories [Line Items]    
Inventories 333 191
Hardware Devices [Member]    
Inventories [Line Items]    
Inventories [1] $ 3,546 $ 183
[1] Hardware devices include OneThing Cloud, ZQB, XZB and hard discs.