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Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Operating Loss Carryforwards [Line Items]    
Income tax examination year 2010 2011 2012 2013 2014 2015 2016 2017  
United States    
Operating Loss Carryforwards [Line Items]    
Net operating loss carry forwards $ 38,295,657 $ 33,896,156
United States | Minimum    
Operating Loss Carryforwards [Line Items]    
Net operating loss carry forwards expiration date 2029  
United States | Maximum    
Operating Loss Carryforwards [Line Items]    
Net operating loss carry forwards expiration date 2037