Schedule of Reported 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
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	46,349	62,385
Available-for-sale marketable securities, Unrealized Gain	16	36
Available-for-sale marketable securities, Unrealized (Loss)	(53)	(267)
Available-for-sale marketable securities, Fair Market Value	46,312	62,154
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	10,454	34,844
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	79,652	77,992
Available-for-sale marketable securities, Unrealized Gain	82	213
Available-for-sale marketable securities, Unrealized (Loss)	(10,025)	(7,903)
Available-for-sale marketable securities, Fair Market Value	69,709	70,302
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 53,084	$ 52,694