Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Sep. 29, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 120,817	$ 140,377
Available-for-sale marketable securities, Unrealized Gain	440	249
Available-for-sale marketable securities, Unrealized (Loss)	(7,162)	(8,170)
Available-for-sale marketable securities, Fair Market Value	114,095	132,456
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	52,428	87,538
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	41,673	62,385
Available-for-sale marketable securities, Unrealized Gain	20	36
Available-for-sale marketable securities, Unrealized (Loss)	(62)	(267)
Available-for-sale marketable securities, Fair Market Value	41,631	62,154
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	9,973	34,844
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	79,144	77,992
Available-for-sale marketable securities, Unrealized Gain	420	213
Available-for-sale marketable securities, Unrealized (Loss)	(7,100)	(7,903)
Available-for-sale marketable securities, Fair Market Value	72,464	70,302
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 42,455	$ 52,694