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Goodwill
12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill
(6) Goodwill

There were no changes in the carrying amount of goodwill for the year ended December 31, 2016. The change in the carrying amount of goodwill for the year ended December 31, 2017 is as follows:

 

Balance as of January 1, 2017

     3,393,234  

Assets exchange (see Note 3)

     11,882,030  
  

 

 

 

Balance as of December 31, 2017

   $ 15,275,264