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Property and Equipment, net - Summary of Property and Equipment, Net (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross $ 175,382 $ 63,335
Accumulated Depreciation (37,807) (21,175)
Total property and equipment, net 137,575 42,160
Computer Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 1,757 727
Furniture, Fixtures, and Other [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 4,371 3,416
Laboratory Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 30,123 25,353
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross 86,735 25,473
Construction Work in Process [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment, gross $ 52,396 $ 8,366