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Redeemable Convertible Preferred Stock - Additional Information (Details) - $ / shares
Dec. 31, 2019
Jul. 26, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Preferred stock, par value (usd per share) $ 0.001   $ 0.001
Preferred stock, shares outstanding (in shares) 0   0
Series A Preferred Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Redeemable convertible preferred stock, shares issued   1,000,000  
Preferred stock, par value (usd per share)   $ 0.001  
Preferred stock, shares outstanding (in shares) 0