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Investments - Schedule of Amortized Cost and Fair Value of Investments by Contractual Maturity (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Available-for-sale, amortized cost    
Due in 1-year or less $ 69,227 $ 110,762
Due after 1-year through 5-years 0 496
Amortized Cost 69,227 111,258
Available-for-sale, fair value    
Due in 1-year or less 68,971 110,704
Due after 1-year through 5-years 0 495
Fair value $ 68,971 $ 111,199