Quarterly report pursuant to Section 13 or 15(d)

Common Stock - Additional Information (Details)

v3.22.2.2
Common Stock - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 23, 2019
Oct. 31, 2019
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Jan. 01, 2022
Dec. 31, 2021
Oct. 30, 2019
Jan. 31, 2019
Class Of Stock [Line Items]                      
Common stock, authorized shares           150,000,000     150,000,000    
Non-voting common stock, Terms of conversion   Each share of the Company’s non-voting common stock may be converted at any time into one share of common stock at the option of its holder by providing 61 days written notice to the Company                  
Common stock issuance     $ 24,880 $ 7,665 $ 2,165            
Unrecognized compensation cost related to unvested stock-based awards           $ 13,403          
Unrecognized compensation cost, period for recognition           2 years 3 months 18 days          
At-The-Market Offering Sales Agreement                      
Class Of Stock [Line Items]                      
Common stock issuance, Shares           0          
At-The-Market Offering Sales Agreement | Maximum                      
Class Of Stock [Line Items]                      
Common stock issuance           $ 75,000          
2018 Plan | Stock Options                      
Class Of Stock [Line Items]                      
Share-based compensation unvested number of shares           0          
Number of options granted           1,959,411          
2018 Plan | Maximum | Stock Options                      
Class Of Stock [Line Items]                      
Share-based compensation, vesting period           4 years          
2018 Plan | Minimum | Stock Options                      
Class Of Stock [Line Items]                      
Share-based compensation, vesting period           3 years          
2019 Plan                      
Class Of Stock [Line Items]                      
Shares reserved for issuance 2,342,288             1,157,085      
Increase in share reserved percentage 4.00%                    
Share-based compensation, number of shares available for grant           1,135,802          
2019 Plan | Stock Options                      
Class Of Stock [Line Items]                      
Number of options granted           2,053,000          
Weighted average grant-date fair value of stock options granted           $ 2.10 $ 7.68        
2019 ESPP                      
Class Of Stock [Line Items]                      
Shares reserved for issuance 234,229             0      
2019 ESPP | Minimum                      
Class Of Stock [Line Items]                      
Shares reserved for issuance                     234,229
Increase in share reserved percentage 1.00%                    
Payroll deduction percentage of eligible compensation           15.00%          
Employee stock purchase plan maximum annual rights to purchase common stock           $ 25          
Percentage of shares to be purchased           85.00%          
Voting Common Stock                      
Class Of Stock [Line Items]                      
Common stock, authorized shares           143,590,481     143,590,481 143,590,481  
Non-voting Common Stock                      
Class Of Stock [Line Items]                      
Common stock, authorized shares           6,409,519     6,409,519 6,409,519