Annual report pursuant to Section 13 and 15(d)

Basis of Presentation - Additional Information (Details)

v3.20.1
Basis of Presentation - Additional Information (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Oct. 29, 2019
USD ($)
$ / shares
shares
Oct. 16, 2019
$ / shares
Nov. 30, 2019
USD ($)
shares
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Basis Of Presentation [Line Items]          
Reverse stock split description       1-for-1.5 reverse split  
Reverse stock split ratio   0.67      
Common stock, par value | $ / shares   $ 0.00001      
Cash and cash equivalents | $       $ 136,204 $ 33,017
Accumulated deficit | $       $ (32,959) $ (12,452)
Initial Public Offering          
Basis Of Presentation [Line Items]          
Issuance of common stock, shares | shares 6,800,000        
Common stock issued, per share | $ / shares $ 11.00        
Net proceeds from initial public offering | $ $ 66,156   $ 4,864    
Conversion of convertible preferred stock to common stock | shares 12,904,534        
Number of additional common stock purchased by underwriters upon partial exercise of option | shares     475,501