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Organization and Basis of Presentation - Additional Information (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Nov. 13, 2019
USD ($)
$ / shares
shares
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Mar. 31, 2019
USD ($)
Subsidiary Sale Of Stock [Line Items]        
Date of incorporation   Jun. 28, 2019    
Reorganization exchange of equity percentage of ordinary shares exchanged   100.00%    
Reorganization exchange of equity percentage of common stock issued upon exchange   100.00%    
Reverse stock split conversion ratio 0.160849      
Cash and cash equivalents   $ 85,532 $ 93,335 $ 7,064
Common Stock        
Subsidiary Sale Of Stock [Line Items]        
Convertible preferred stock automatically converted into common stock | shares 7,077,366      
IPO | Common Stock        
Subsidiary Sale Of Stock [Line Items]        
Shares issued and sold | shares 6,100,390      
IPO price per share | $ / shares $ 16.00      
Proceeds from issuance of common stock, net of underwriters discount and commissions $ 87,700      
Payment of underwriting discounts, commissions 6,800      
Other offering expenses $ 3,100      
Underwriters option | Common Stock        
Subsidiary Sale Of Stock [Line Items]        
Shares issued and sold | shares 795,703