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Redeemable Preferred Stock (Details) - USD ($)
1 Months Ended 2 Months Ended
Dec. 30, 2019
Apr. 30, 2018
Jun. 30, 2019
Series A and Series B Redeemable Convertible Preferred Stock      
Redeemable Preferred Stock      
Number of stock converted 8,264,613    
Conversion ratio 1    
Series A Redeemable Convertible Preferred Stock      
Redeemable Preferred Stock      
Shares issued (in shares)   $ 4,801,020  
Shares price (in dollars per share)   $ 3.50  
Gross proceeds   $ 16,800,000  
Series B Redeemable Convertible Preferred Stock      
Redeemable Preferred Stock      
Shares issued (in shares)     $ 3,463,593
Shares price (in dollars per share)     $ 7.00
Gross proceeds     $ 24,240,000