Annual report pursuant to Section 13 and 15(d)

Nature of business and summary of significant accounting policies - Reverse stock split and Initial public offering (Details)

v3.23.1
Nature of business and summary of significant accounting policies - Reverse stock split and Initial public offering (Details)
$ / shares in Units, $ in Millions
Jul. 01, 2021
USD ($)
$ / shares
shares
Jun. 29, 2021
shares
Jun. 28, 2021
shares
Class of Stock [Line Items]      
Reverse stock split, conversion ratio     0.1667
Shares issued in lieu of fractional shares due to reverse stock split (in shares)     1,081
IPO      
Class of Stock [Line Items]      
Sale of stock (in shares) 8,000,000    
Sale of stock, purchase price (in dollars per share) | $ / shares $ 5.00    
Cash proceeds | $ $ 36.1    
Underwriting discounts and commissions | $ 2.8    
Offering costs | $ $ 1.1    
Common stock issued upon conversion of convertible preferred stock (in shares) 5,764,533    
Redeemable Convertible Preferred Stock      
Class of Stock [Line Items]      
Common stock issued upon exercise (in shares)   4,732,420