Investments - Schedule of Amortized Cost and Fair Value of Investments by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Available-for-sale, amortized cost
Due in 1-year or less	$ 110,762	$ 137,588
Due after 1-year through 5-years	496	49,851
Amortized Cost	111,258	187,439
Available-for-sale, fair value
Due in 1-year or less	110,704	137,567
Due after 1-year through 5-years	495	49,825
Fair value	$ 111,199	$ 187,392

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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