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Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands		Jul. 04, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Marketable securities		$ 427,523	$ 610,840
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash and cash equivalents		954,441	914,121
Marketable securities		463,681	640,260
Derivative assets		25	95
Contingent consideration			7,227
Derivative liabilities		365	504
Convertible debt	[1]	357,379	410,111
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash and cash equivalents		954,441	914,121
Marketable securities		463,681	640,260
Derivative assets		25	95
Contingent consideration			7,227
Derivative liabilities		365	504
Convertible debt	[1]	$ 1,595,912	$ 1,739,553
[1] The carrying value represents the bifurcated debt component only, while the level 2 fair value is based on quoted market prices for the convertible note, which includes the equity conversion features.

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