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Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Sep. 28, 2025	Dec. 31, 2024
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 108,145	$ 126,001
Available-for-sale marketable securities, Unrealized Gain	343	98
Available-for-sale marketable securities, Unrealized (Loss)	(8,567)	(10,078)
Available-for-sale marketable securities, Fair Market Value	99,921	116,021
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	49,624	63,538
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	25,012	46,349
Available-for-sale marketable securities, Unrealized Gain	25	16
Available-for-sale marketable securities, Unrealized (Loss)	(20)	(53)
Available-for-sale marketable securities, Fair Market Value	25,017	46,312
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	6,517	10,454
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	83,133	79,652
Available-for-sale marketable securities, Unrealized Gain	318	82
Available-for-sale marketable securities, Unrealized (Loss)	(8,547)	(10,025)
Available-for-sale marketable securities, Fair Market Value	74,904	69,709
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 43,107	$ 53,084

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