XML 42 R30.htm IDEA: XBRL DOCUMENT v3.21.2
Organization - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 9 Months Ended
Jun. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Description Of Organization [Line Items]            
Proceeds from initial public offering, net of underwriters' discounts and commissions   $ 391,802      
Outstanding convertible preferred stock (in shares)   0   194,474,000    
Convertible Preferred Stock            
Description Of Organization [Line Items]            
Conversion of preferred stock into common stock (in shares)   194,474,000        
Outstanding convertible preferred stock (in shares)     194,474,000 194,474,000 194,474,000 152,116,000
Common Stock            
Description Of Organization [Line Items]            
Conversion of preferred stock into common stock (in shares)   194,474,000        
IPO | Convertible Preferred Stock            
Description Of Organization [Line Items]            
Conversion of preferred stock into common stock (in shares) 194,474,431          
IPO | Common Stock            
Description Of Organization [Line Items]            
Issuance of common stock, shares 25,000,000          
Payments of underwriting discounts and commissions $ 29,800          
Proceeds from initial public offering, net of underwriters' discounts and commissions $ 391,800          
Common stock price per share $ 17.00          
Offering expenses $ 3,400          
IPO | Common Stock Including Additional Paid in Capital            
Description Of Organization [Line Items]            
Converted preferred stock $ 1,000,000