Quarterly report pursuant to Section 13 or 15(d)

Intangible assets, net - Additional information (Details)

v3.19.2
Intangible assets, net - Additional information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Intangible assets, net        
Amortization of Intangible Assets $ 275,274 $ 0 $ 539,120 $ 0