XML 56 R28.htm IDEA: XBRL DOCUMENT v3.20.4
Organization and Basis of Presentation - Additional Information (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
May 05, 2020
USD ($)
$ / shares
shares
Mar. 11, 2020
Patient
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Organization And Basis Of Presentation [Line Items]        
Entity incorporation, date of incorporation     Nov. 21, 2005  
Net loss     $ (22,127) $ (16,306)
Accumulated deficit     (149,884) (127,757)
Cash and cash equivalents     74,593 $ 9,808
Net proceeds from initial public offering     $ 59,892  
Number of patients | Patient   67    
Common Stock        
Organization And Basis Of Presentation [Line Items]        
Issuance of common stock from initial public offering, net of issuance costs, Shares | shares     4,025,000  
Gross proceeds from initial public offering $ 64,400      
Net proceeds from initial public offering $ 57,300      
IPO | Common Stock        
Organization And Basis Of Presentation [Line Items]        
Issuance of common stock from initial public offering, net of issuance costs, Shares | shares 4,025,000      
Shares issued and sold, public offering price | $ / shares $ 16.00      
Exercise of Underwriters' Option | Common Stock        
Organization And Basis Of Presentation [Line Items]        
Issuance of common stock from initial public offering, net of issuance costs, Shares | shares 525,000