Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disclosure Reconciliation Of Beginning And Ending Amount Of Unrecognized Tax Benefits [Abstract]
Balance at beginning of period	$ 2,279	$ 2,276
Additions based on tax positions related to the current year	1	1
Additions for tax positions of prior years		2
Reductions in prior year tax positions	(1)
Balance at end of period	$ 2,279	$ 2,279