XML 78 R54.htm IDEA: XBRL DOCUMENT v3.19.3
Intangible assets, net - Estimated amortization (Details) - USD ($)
Jun. 30, 2019
Jun. 30, 2018
Intangible assets, net    
2020 $ 12,147  
2021 12,147  
2022 12,147  
2023 12,147  
2024 12,147  
Thereafter 402,003  
Total $ 462,738 $ 492,330