Interest Expense on Convertible Senior Notes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
Contractual interest expense on the coupon	$ 312	$ 732
Amortization of the discount component and debt issue fees recognized as interest expense	113	209
Total interest expense on the convertible debt	$ 425	$ 941