Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Balance at January 1,	$ 2,727	$ 2,544	$ 2,806
Additions based on tax positions related to the current year	500	500	500
Additions for tax positions of prior years	180	159	213
Reductions for tax positions of prior years	(557)	(461)	(261)
Settlements	0	(15)	(714)
Balance at December 31,	$ 2,850	$ 2,727	$ 2,544