Annual report pursuant to Section 13 and 15(d)

Commitments and contingencies - Schedule of Future Minimum Rental Payments for Operating Leases (Details)

v3.8.0.1
Commitments and contingencies - Schedule of Future Minimum Rental Payments for Operating Leases (Details)
Dec. 31, 2017
USD ($)
Future minimum lease payments under all non-cancelable operating leases  
2018 $ 588,021
2019 511,382
2020 513,742
2021 521,375
2022 529,115
2023 and thereafter 671,553
Total $ 3,335,188