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Related Party Transactions - Additional Information (Details) - USD ($)
1 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2017
Apr. 30, 2020
Series A Redeemable Convertible Preferred Stock        
Related Party Transaction [Line Items]        
Preferred stock shares issued upon conversion of outstanding convertible notes and accrued interest 5,019,949      
Versant | Related Party 2017 Convertible Note        
Related Party Transaction [Line Items]        
Promissory note, face amount     $ 2,000,000.0 $ 2,000,000.0
Debt instrument, interest rate payable percentage     4.00%  
Minimum percentage of preferred stock price paid per preferred shares in conversion     80.00%  
Conversion price divided by number of fully diluted equity     $ 5,000,000.0  
Conversion price divided by number of fully diluted equity in event of change of control     3,000,000.0  
Conversion price divided by number of fully diluted equity prior to maturity     $ 3,000,000.0  
Related party debt accrued interest outstanding       $ 300,000
Versant | Related Party 2020 Convertible Note        
Related Party Transaction [Line Items]        
Promissory note, face amount   $ 5,000,000.0    
Debt instrument, interest rate payable percentage   1.60%    
Conversion price divided by number of fully diluted equity in event of change of control   $ 31,700,000    
Conversion price divided by number of fully diluted equity prior to maturity   $ 31,700,000    
Debt instrument maturity month and year   2021-03    
Versant | Related Party 2020 Convertible Note | Series A Redeemable Convertible Preferred Stock        
Related Party Transaction [Line Items]        
Preferred stock shares issued upon conversion of outstanding convertible notes and accrued interest 5,019,945      
Extinguishment gain or loss recorded on conversion $ 0