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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Property, Plant, and Equipment, Useful Life [Table Text Block]
 
Category
Estimated useful life
 
       
 
Office equipment (years)
5
 
 
Furniture
(years)
5
 
 
Motor vehicles
(years)
10
 
 
Leasehold improvements
Lower of lease term or economic life