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19. Amount Due to an Affiliate (Tables)
12 Months Ended
Dec. 31, 2019
Amount Due To Affiliate  
Amount Due to an Affiliate
      December 31,     December 31,  
      2019     2018  
  Amount due to an affiliate, current   $ 9,128     $ 8,819  
  Amount due to an affiliate, noncurrent     1,728        
  Total amount due to an affiliate   $ 10,856     $ 8,819