Available-for-Sale Marketable Securities in Unrealized Position (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 28,094	$ 48,631
Less than 12 Months, Unrealized Loss	(876)	(250)
12 Months or Greater, Fair Value	32,828	2,017
12 Months or Greater, Unrealized Loss	(1,961)	(5)
Total, Fair Value	60,922	50,648
Total, Unrealized Loss	(2,837)	(255)
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	16,500	27,909
Less than 12 Months, Unrealized Loss	(544)	(153)
12 Months or Greater, Fair Value	20,050	998
12 Months or Greater, Unrealized Loss	(1,159)	(3)
Total, Fair Value	36,550	28,907
Total, Unrealized Loss	(1,703)	(156)
United States government agency securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	9,869	18,367
Less than 12 Months, Unrealized Loss	(234)	(75)
12 Months or Greater, Fair Value	11,362	1,019
12 Months or Greater, Unrealized Loss	(584)	(2)
Total, Fair Value	21,231	19,386
Total, Unrealized Loss	(818)	(77)
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	1,725	2,355
Less than 12 Months, Unrealized Loss	(98)	(22)
12 Months or Greater, Fair Value	1,416	0
12 Months or Greater, Unrealized Loss	(218)	0
Total, Fair Value	3,141	2,355
Total, Unrealized Loss	$ (316)	$ (22)