Income Taxes - Components of Loss Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
U.S. operations	$ (70,812)	$ (102,354)
Non-U.S. operations	100	100
Net loss before income taxes	$ (70,712)	$ (102,254)