Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Mar. 30, 2025	Dec. 31, 2024
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 102,322	$ 126,001
Available-for-sale marketable securities, Unrealized Gain	172	98
Available-for-sale marketable securities, Unrealized (Loss)	(9,304)	(10,078)
Available-for-sale marketable securities, Fair Market Value	93,190	116,021
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	61,534	63,538
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	32,213	46,349
Available-for-sale marketable securities, Unrealized Gain	15	16
Available-for-sale marketable securities, Unrealized (Loss)	(83)	(53)
Available-for-sale marketable securities, Fair Market Value	32,145	46,312
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	18,090	10,454
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	70,109	79,652
Available-for-sale marketable securities, Unrealized Gain	157	82
Available-for-sale marketable securities, Unrealized (Loss)	(9,221)	(10,025)
Available-for-sale marketable securities, Fair Market Value	61,045	69,709
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 43,444	$ 53,084