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Business Acquisition - Summary of Fair Value of Purchase Price Consideration (Detail) - Anelixis [Member]
$ in Thousands
Sep. 14, 2020
USD ($)
Fair value of purchase consideration:  
Total purchase consideration $ 86,811
Stock Options [Member]  
Fair value of purchase consideration:  
Awards assumed 2,950
Common Stock [Member]  
Fair value of purchase consideration:  
Awards assumed 1,194
Preferred Stock [Member]  
Fair value of purchase consideration:  
Awards assumed 69,723
Warrants [Member]  
Fair value of purchase consideration:  
Awards assumed $ 12,944