Available-for-Sale Marketable Securities - Schedule of Fair Values and Continuous Unrealized Loss Positions of Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Fair Value	$ 147,636	$ 156,455
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Gross Unrealized Losses	(1,747)	(354)
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Fair Value	10,329	3,037
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Gross Unrealized Losses	(300)	(9)
Available-for-sale marketable securities, continuous unrealized loss position, Fair Value	157,965	159,492
Available-for-sale marketable securities, continuous unrealized loss position, Gross Unrealized Losses	(2,047)	(363)
U.S. Treasury Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Fair Value	11,001	11,570
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Gross Unrealized Losses	(32)	(3)
Available-for-sale marketable securities, continuous unrealized loss position, Fair Value	11,001	11,570
Available-for-sale marketable securities, continuous unrealized loss position, Gross Unrealized Losses	(32)	(3)
U.S. Government Agency Obligations [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Fair Value	7,123	9,456
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Gross Unrealized Losses	(377)	(45)
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Fair Value	1,921
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Gross Unrealized Losses	(79)
Available-for-sale marketable securities, continuous unrealized loss position, Fair Value	9,044	9,456
Available-for-sale marketable securities, continuous unrealized loss position, Gross Unrealized Losses	(456)	(45)
Corporate Bonds [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Fair Value	53,797	62,704
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Gross Unrealized Losses	(749)	(170)
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Fair Value	4,403	2,020
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Gross Unrealized Losses	(104)	(1)
Available-for-sale marketable securities, continuous unrealized loss position, Fair Value	58,200	64,724
Available-for-sale marketable securities, continuous unrealized loss position, Gross Unrealized Losses	(853)	(171)
Commercial Paper [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Fair Value	57,696	52,163
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Gross Unrealized Losses	(150)	(31)
Available-for-sale marketable securities, continuous unrealized loss position, Fair Value	57,696	52,163
Available-for-sale marketable securities, continuous unrealized loss position, Gross Unrealized Losses	(150)	(31)
Municipal Bonds [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Fair Value	18,019	20,562
Available-for-sale marketable securities, continuous unrealized loss position, Less than 12 Months, Gross Unrealized Losses	(439)	(105)
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Fair Value	4,005	1,017
Available-for-sale marketable securities, continuous unrealized loss position, 12 Months or Greater, Gross Unrealized Losses	(117)	(8)
Available-for-sale marketable securities, continuous unrealized loss position, Fair Value	22,024	21,579
Available-for-sale marketable securities, continuous unrealized loss position, Gross Unrealized Losses	$ (556)	$ (113)