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Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands | Apr. 04, 2021 | Dec. 31, 2020
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |
Marketable securities |  | $ 560,762 | $ 610,840
Carrying Value |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |
Cash and cash equivalents |  | 831,149 | 914,121
Marketable securities |  | 593,913 | 640,260
Derivative assets |  | 16 | 95
Contingent consideration |  |  | 7,227
Derivative liabilities |  | 393 | 504
Convertible debt | [1] | 367,934 | 410,111
Fair Value |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |
Cash and cash equivalents |  | 831,149 | 914,121
Marketable securities |  | 593,913 | 640,260
Derivative assets |  | 16 | 95
Contingent consideration |  |  | 7,227
Derivative liabilities |  | 393 | 504
Convertible debt | [1] | $ 1,664,667 | $ 1,739,553
[1] | The carrying value represents the bifurcated debt component only, while the fair value is based on quoted market prices for the convertible note, which includes the equity conversion features.

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