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Right of Use Leases Assets and Leases Obligations (Tables)
 12 Months Ended
Dec. 31, 2019
Leases [Abstract]  
Schedule of operating lease assets and liabilities

   December 31,
2019		   December 31,
2018		 
   US$
thousands		   US$
thousands		 
         
Operating lease assets  $634   $     - 
           
Operating lease liabilities:          
Current operating lease liabilities  $239   $- 
Non-current operating lease liabilities  $450   $- 
Total operating lease liabilities  $689   $- 
Schedule of weighted average remaining lease term and weighted average discount rate for operating leases

   December 31,
2019		 
Weighted average remaining lease term (years)   3.3 
Weighted average discount rate   6.0%
Schedule of future minimum lease payments under non-cancelable operating leases

   US$
thousands		 
     
2020   271 
2021   196 
2022   141 
2023   141 
2024   12 
Thereafter   - 
Total undiscounted future minimum lease payments   761 
Less: portion representing imputed interest   (72)
Total undiscounted future minimum lease payments   689