Schedule of Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Apr. 03, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 368,154	$ 334,077
Available-for-sale marketable securities, Unrealized Gain	1,596	5,477
Available-for-sale marketable securities, Unrealized (Loss)	(3,637)	(718)
Available-for-sale marketable securities, Fair Market Value	366,113	338,836
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	257,991	91,937
U.S. Treasury Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	121,504	77,707
Available-for-sale marketable securities, Unrealized Gain	8	551
Available-for-sale marketable securities, Unrealized (Loss)	(1,675)	(470)
Available-for-sale marketable securities, Fair Market Value	119,837	77,789
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	114,043	46,435
Commercial Paper
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	179,736	189,614
Available-for-sale marketable securities, Unrealized Gain	3	15
Available-for-sale marketable securities, Unrealized (Loss)	(258)	(9)
Available-for-sale marketable securities, Fair Market Value	179,481	189,620
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	106,951	22,784
Corporate Debt Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	53,079	52,266
Available-for-sale marketable securities, Unrealized Gain	1,585	4,863
Available-for-sale marketable securities, Unrealized (Loss)	(1,503)	(227)
Available-for-sale marketable securities, Fair Market Value	53,161	56,901
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	32,283	19,422
Certificates of Deposit and Time Deposits
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	1,312	1,356
Available-for-sale marketable securities, Fair Market Value	1,312	1,356
U.S. Government Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	4,795	4,617
Available-for-sale marketable securities, Unrealized Gain		5
Available-for-sale marketable securities, Unrealized (Loss)	(81)	(12)
Available-for-sale marketable securities, Fair Market Value	4,714	4,610
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	4,714	3,296
Debt Mutual Funds
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	7,150	7,928
Available-for-sale marketable securities, Unrealized Gain		43
Available-for-sale marketable securities, Unrealized (Loss)	(120)
Available-for-sale marketable securities, Fair Market Value	7,030	7,971
Non-U.S. Government Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	578	589
Available-for-sale marketable securities, Fair Market Value	$ 578	$ 589

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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