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Note 19 - The Financing and Warrant Liabilities (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
   
Valuation techniques
  
Unobservable inputs
  
Value/Range of Inputs
                 
Year Ended December 31, 2018
   
Remaining useful life (years)
  
 
7.75
 
Intangible assets (Note 10)  
Multi-period Excess Earning
  
Discount rate
  
 
24%
 
   
Contributory asset charge
  
8.90%
-
24%
                 
Goodwill (Note 12)  
Discounted Cash Flow
  
Base projection period (years)
  
 
5
 
 
 
  
Discount rate
  
 
20%
 
   
 
  
Terminal growth rate
  
 
3.50%
 
                 
Year Ended December 31, 2017
 
   
Remaining useful life (years)
  
3.25
-
8.5
Intangible assets (Note 10)  
Multi-period Excess Earning
  
Discount rate
  
 
24%
 
   
 
  
Contributory asset charge
  
15.90%
-
24%
                 
                 
   
Base projection period (years)
  
 
5
 
Goodwill (Note 12)  
Discounted Cash Flow
  
Discount rate
  
 
20%
 
   
 
  
Terminal growth rate
  
 
3.50%
 
Allocation of Proceeds from Issuance of Equity [Table Text Block]
    Initial measurement
    (USD’000)
         
Investor warrants    
1,890
  
Common Stock (par value and additional paid-in capital)    
9,183
  
Total proceeds from the Financing    
11,073
  
Schedule of Warrant Liabilities [Table Text Block]
    As of
December 31, 2018		   As of
January 17, 2018		   Change in Fair Value
(gain)/loss
    US$’000   US$’000   US$’000
Fair value of the Warrants:                        
Investor warrants    
503
      
1,890
      
(1,387
 )
Placement agent warrants    
103
      
385
      
(282
 )
Warrant liabilities    
606
      
2,275
      
(1,669
 )
Schedule of Warrant Activity [Table Text Block]
    Warrant Outstanding   Warrant Exercisable
    Number of underlying shares   Weighted
Average
Remaining
Contractual
Life (Years)		   Weighted
Average
Exercise
Price		   Number of underlying shares   Weighted
Average
Remaining
Contractual
Life (Years)		   Weighted
Average
Exercise
Price
                                                 
Balance, January 1, 2018    
-
      
 
      
 
      
-
      
 
      
 
  
Granted/Vested    
774,000
      
2.58
     $
6.60
      
774,000
      
2.58
     $
6.60
  
Forfeited    
-
      
 
      
 
      
-
      
 
      
 
  
Exercised    
-
      
 
      
 
      
-
      
 
      
 
  
Balance, December 31, 2018    
774,000
      
1.63
     $
6.60
      
774,000
      
1.63
     $
6.60
  
Warrant [Member]  
Notes Tables  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
    Investors Warrants   Placement Agent Warrants
    January 17,
2018		   December 31,
2018		   January 17,
2018		   December 31,
2018
                 
Stock price   $
3.98
     $
1.34
     $
3.98
     $
1.34
  
Years to maturity    
2.50
      
1.55
      
3.00
      
2.05
  
Risk-free interest rate    
2.22
 %    
2.50
 %    
2.39
 %    
2.50
 %
Dividend yield    
-
      
-
      
-
      
-
  
Expected volatility    
158
 %    
199
 %    
147
 %    
176
 %
Exercise Price   $
6.60
     $
6.60
     $
6.60
     $
6.60
  
                                 
Fair value of the warrant   $
2.93
     $
0.78
     $
2.99
     $
0.80