Marketable Securities - Summary of Fair Values and Unrealized Losses of Marketable Securities Held by the Company in an Unrealized Loss Position for Less Than 12 months and 12 Months or Greater (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 56,741	$ 202,689
Less than 12 Months, Unrealized Losses	(439)	(6,024)
12 Months or Greater, Fair Value	277,063	263,824
12 Months or Greater, Unrealized Losses	(8,801)	(8,519)
Total, Fair Value	333,804	466,513
Total, Unrealized Losses	(9,240)	(14,543)
U.S. Government and Agency Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Less than 12 Months, Fair Value	29,923	91,498
Less than 12 Months, Unrealized Losses	(236)	(2,014)
12 Months or Greater, Fair Value	64,013	38,495
12 Months or Greater, Unrealized Losses	(2,378)	(1,478)
Total, Fair Value	93,936	129,993
Total, Unrealized Losses	(2,614)	(3,492)
Certificates of Deposit [Member]
Schedule Of Available For Sale Securities [Line Items]
Less than 12 Months, Fair Value	2,885	4,484
Less than 12 Months, Unrealized Losses	(39)	(144)
12 Months or Greater, Fair Value	4,225	2,087
12 Months or Greater, Unrealized Losses	(160)	(104)
Total, Fair Value	7,110	6,571
Total, Unrealized Losses	(199)	(248)
Corporate Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Less than 12 Months, Fair Value	23,933	106,707
Less than 12 Months, Unrealized Losses	(164)	(3,866)
12 Months or Greater, Fair Value	208,825	223,242
12 Months or Greater, Unrealized Losses	(6,263)	(6,937)
Total, Fair Value	232,758	329,949
Total, Unrealized Losses	$ (6,427)	$ (10,803)