XML 65 R46.htm IDEA: XBRL DOCUMENT v3.20.4
Stockholders' Equity - Narrative (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Sep. 23, 2019
USD ($)
$ / shares
shares
Sep. 06, 2019
Dec. 31, 2019
shares
Subsidiary, Sale of Stock [Line Items]      
Reverse stock split ratio, common stock   0.0054456  
Common Stock      
Subsidiary, Sale of Stock [Line Items]      
Stock issued upon conversion of redeemable convertible preferred shares (in shares)     7,816,643
IPO | Common Stock      
Subsidiary, Sale of Stock [Line Items]      
Initial public offering (in shares) 4,140,000    
Shares issued in public offering, price per share (in dollars per share) | $ / shares $ 14.00    
Proceeds from public offering, net | $ $ 50,400    
Estimated offering expenses for aggregate expenses | $ $ 7,500    
Stock issued upon conversion of redeemable convertible preferred shares (in shares) 7,816,643    
Over-Allotment Option | Common Stock      
Subsidiary, Sale of Stock [Line Items]      
Initial public offering (in shares) 540,000