Quarterly report pursuant to Section 13 or 15(d)

Intangible assets, net - Additional information (Details)

v3.19.3
Intangible assets, net - Additional information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Intangible assets, net        
Amortization of Intangible Assets $ 275,274 $ 0 $ 814,394 $ 0