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Schedule of Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 126,001	$ 140,377
Available-for-sale marketable securities, Unrealized Gain	98	249
Available-for-sale marketable securities, Unrealized (Loss)	(10,078)	(8,170)
Available-for-sale marketable securities, Fair Market Value	116,021	132,456
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	63,538	87,538
U.S. Treasury Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	49,879	45,725
Available-for-sale marketable securities, Unrealized Gain	14	14
Available-for-sale marketable securities, Unrealized (Loss)	(4,951)	(3,931)
Available-for-sale marketable securities, Fair Market Value	44,942	41,808
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	30,530	35,080
Corporate Debt Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	40,395	56,458
Available-for-sale marketable securities, Unrealized Gain	79	201
Available-for-sale marketable securities, Unrealized (Loss)	(4,778)	(3,925)
Available-for-sale marketable securities, Fair Market Value	35,696	52,734
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	27,824	44,263
Certificates of Deposit and Time Deposits
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	21,689	21,772
Available-for-sale marketable securities, Unrealized Gain	0	0
Available-for-sale marketable securities, Unrealized (Loss)	0	0
Available-for-sale marketable securities, Fair Market Value	21,689	21,772
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	0	0
Debt Mutual Funds
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	9,299	9,081
Available-for-sale marketable securities, Unrealized Gain	0	0
Available-for-sale marketable securities, Unrealized (Loss)	(348)	(308)
Available-for-sale marketable securities, Fair Market Value	8,951	8,773
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	3,238	3,303
U.S. Government Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	3,966	4,898
Available-for-sale marketable securities, Unrealized Gain	5	0
Available-for-sale marketable securities, Unrealized (Loss)	(1)	(6)
Available-for-sale marketable securities, Fair Market Value	3,970	4,892
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	1,946	4,892
Non-U.S. Government Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	773	810
Available-for-sale marketable securities, Unrealized Gain	0	0
Available-for-sale marketable securities, Unrealized (Loss)	0	0
Available-for-sale marketable securities, Fair Market Value	773	810
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 0	0
Commercial Paper
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost		1,633
Available-for-sale marketable securities, Unrealized Gain		34
Available-for-sale marketable securities, Unrealized (Loss)		0
Available-for-sale marketable securities, Fair Market Value		1,667
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses		$ 0

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