Marketable Securities - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) Security
Schedule of Available-for-sale Securities [Line Items]
Realized gains (losses) recognized on sale or maturity of marketable equity securities	$ 0
Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value	119,300
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, aggregate loss	$ 200
Weighted average maturity period	5 months
U S Treasury Securities Member
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position | Security	18
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position | Security	12