Schedule of 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
U.S. Treasury Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	45,522	45,725
Available-for-sale marketable securities, Unrealized Gain	106	14
Available-for-sale marketable securities, Unrealized (Loss)	(3,795)	(3,931)
Available-for-sale marketable securities, Fair Market Value	41,833	41,808
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	22,985	35,080
Corporate Debt Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	39,986	56,458
Available-for-sale marketable securities, Unrealized Gain	323	201
Available-for-sale marketable securities, Unrealized (Loss)	(3,160)	(3,925)
Available-for-sale marketable securities, Fair Market Value	37,149	52,734
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	25,248	44,263
Certificates of Deposit and Time Deposits
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	21,741	21,772
Available-for-sale marketable securities, Unrealized Gain		0
Available-for-sale marketable securities, Unrealized (Loss)		0
Available-for-sale marketable securities, Fair Market Value	21,741	21,772
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses		0
Debt Mutual Funds
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	8,846	9,081
Available-for-sale marketable securities, Unrealized Gain		0
Available-for-sale marketable securities, Unrealized (Loss)	(206)	(308)
Available-for-sale marketable securities, Fair Market Value	8,640	8,773
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	3,319	3,303
U.S. Government Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	3,921	4,898
Available-for-sale marketable securities, Unrealized Gain	11	0
Available-for-sale marketable securities, Unrealized (Loss)	(1)	(6)
Available-for-sale marketable securities, Fair Market Value	3,931	4,892
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	876	4,892
Commercial Paper
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost		1,633
Available-for-sale marketable securities, Unrealized Gain		34
Available-for-sale marketable securities, Unrealized (Loss)		0
Available-for-sale marketable securities, Fair Market Value		1,667
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses		0
Non-U.S. Government Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	801	810
Available-for-sale marketable securities, Unrealized Gain		0
Available-for-sale marketable securities, Unrealized (Loss)		0
Available-for-sale marketable securities, Fair Market Value	801	810
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses		$ 0

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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