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Summary of Significant Accounting Policies - Additional Information (Details)
3 Months Ended 6 Months Ended
Dec. 31, 2021
USD ($)
item
Dec. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
item
shares
Dec. 31, 2020
USD ($)
shares
Jun. 30, 2021
USD ($)
FDIC insured amount | $ $ 250,000   $ 250,000    
Number of revenue sources | item 2   2    
Foreign currency transaction gain (loss) | $ $ (11,982) $ 17,469 $ (23,225) $ 41,718  
Restricted Common Stock [Member]          
Antidilutive securities amount | shares     345,726 250,553  
Europe financial institutions          
Deposits | $ $ 568,209   $ 568,209   $ 138,488
Employee stock options          
Antidilutive securities amount | shares     3,272,850 3,564,018  
Employee stock options | Warrant          
Antidilutive securities amount | shares       320,000