Summary of Significant Accounting Policies - Additional Information (Details)
3 Months Ended 6 Months Ended
Dec. 31, 2019
USD ($)
item
Dec. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
item
shares
Dec. 31, 2018
USD ($)
shares
Jun. 30, 2019
USD ($)
Cash, FDIC Insured Amount | $ $ 250,000   $ 250,000    
Foreign Currency Transaction Gain (Loss), before Tax | $ $ 5,456 $ (10,025) $ (6,667) $ (15,005)  
Number Of Revenue Sources | item 2   2    
Restricted Common Stock [Member]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares     254,283 398,130  
Sales Revenue, Net [Member]          
Concentration Risk, Percentage     10.00% 10.00%  
Accounts Receivable [Member]          
Concentration Risk, Percentage     10.00% 10.00%  
Europe Financial Institutions [Member]          
Deposits | $ $ 66,307   $ 66,307   $ 63,933
Employee Stock Option [Member]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares     3,416,580 3,465,335  
Employee Stock Option [Member] | Warrant [Member]          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares     1,885,000 1,885,000