Annual report pursuant to Section 13 and 15(d)

Intangible Assets, Net - Summary of Changes in Carrying Amount of Goodwill (Details)

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Intangible Assets, Net - Summary of Changes in Carrying Amount of Goodwill (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
Beginning Balance $ 12,647,806 $ 12,405,770
Impairment (1,191,111)
Foreign currency translation (loss) gain (176,230) 242,036
Ending Balance $ 11,280,465 $ 12,647,806