Marketable Securities - Summary of Company Marketable Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost / Cost	$ 356,022	$ 482,792
Unrealized Gains	2	1
Unrealized Losses	(9,240)	(14,543)
Fair Value	346,784	468,250
U.S. Government and Agency Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost / Cost	109,284	134,485
Unrealized Gains	2
Unrealized Losses	(2,614)	(3,492)
Fair Value	106,672	130,993
Certificates of Deposit [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost / Cost	7,553	7,555
Unrealized Gains		1
Unrealized Losses	(199)	(248)
Fair Value	7,354	7,308
Corporate Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost / Cost	239,185	340,752
Unrealized Losses	(6,427)	(10,803)
Fair Value	$ 232,758	$ 329,949