Financial Instruments - Summary of Money Market Funds and Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 14,136	$ 25,997
Unrealized Loss	(7)	(14)
Estimated Fair Value	14,129	25,983
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,165	951
Estimated Fair Value	1,165	951
Certificates of deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	150	150
Estimated Fair Value	150	150
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,821	24,896
Unrealized Loss	(7)	(14)
Estimated Fair Value	12,814	24,882
Cash and cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,986	24,566
Unrealized Loss	(7)	(13)
Estimated Fair Value	13,979	24,553
Short-term investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		1,281
Unrealized Loss		(1)
Estimated Fair Value		1,280
Long Term Restricted Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	150	150
Estimated Fair Value	$ 150	$ 150