Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Jun. 29, 2025	Dec. 31, 2024
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 105,179	$ 126,001
Available-for-sale marketable securities, Unrealized Gain	223	98
Available-for-sale marketable securities, Unrealized (Loss)	(9,387)	(10,078)
Available-for-sale marketable securities, Fair Market Value	96,015	116,021
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	61,559	63,538
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	28,684	46,349
Available-for-sale marketable securities, Unrealized Gain	6	16
Available-for-sale marketable securities, Unrealized (Loss)	(52)	(53)
Available-for-sale marketable securities, Fair Market Value	28,638	46,312
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	19,524	10,454
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	76,495	79,652
Available-for-sale marketable securities, Unrealized Gain	217	82
Available-for-sale marketable securities, Unrealized (Loss)	(9,335)	(10,025)
Available-for-sale marketable securities, Fair Market Value	67,377	69,709
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 42,035	$ 53,084