XML 50 R38.htm IDEA: XBRL DOCUMENT v3.20.2
Intangible Assets, Net (Tables)
6 Months Ended
Jun. 30, 2020
Intangible Assets, Net [Abstract]  
Schedule of intangible assets

   December 31,   June 30, 
   2019   2020 
Computer software at cost  $30,648   $30,205 
Accumulated amortization   (15,470)   (17,818)
   $15,178   $12,387