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Intangible Assets, Net (Tables)
 3 Months Ended
Mar. 31, 2017
Intangible Assets, Net [Abstract]  
Summary of intangible assets
      March 31, 2017     December 31, 2016  
      Carrying Amount     Accumulated Amortization     Net Value     Carrying Amount     Accumulative Amortization     Net Value  
                                                   
  Technology   $ 6,745     $ (6,557 )   $ 188     $ 6,745     $ (6,476 )   $ 269