XML 39 R29.htm IDEA: XBRL DOCUMENT v3.21.2
Overview and Basis of Presentation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 9 Months Ended 77 Months Ended
Jul. 31, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]        
Proceeds from common stock offering       $ 1,815,700
Proceeds from issuance of convertible preferred stock       85,000
Collaborative Arrangement [Member]        
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]        
Proceeds from common stock offering       276,800
Initial Public Offering and Concurrent Private Placements [Member]        
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]        
Proceeds from common stock offering       170,500
Follow-on public Offerings [Member]        
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]        
Proceeds from common stock offering   $ 648,315 $ 107,732 1,086,900
At The Market Offerings [Member]        
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]        
Proceeds from common stock offering   $ 45,255 $ 14,722 $ 196,500
Underwritten Public Offering [Member]        
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]        
Proceeds from common stock offering $ 648,300      
Number of common stock issued upon conversion of shares 4,758,620      
Public offering price per share $ 145.00      
Underwriting discounts and estimated offering costs $ 41,700      
NewCo        
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]        
Equity Method Investment, Ownership Percentage   33.33%   33.33%