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Schedule of Prepayments and Other Assets (Detail) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Prepaid And Other Current Assets [Line Items]
Contract manufacturer and supplier prepayments	$ 185,567	$ 143,392
Prepaid taxes	11,278	8,046
Prepaid maintenance and other services	10,064	8,503
Other prepayments	14,063	16,753
Total prepayments	$ 220,972	$ 176,694

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