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Schedule of Prepayments and Other Assets (Detail) - USD ($) $ in Thousands	Jun. 28, 2020	Dec. 31, 2019
Prepaid And Other Current Assets [Line Items]
Contract manufacturer and supplier prepayments	$ 191,029	$ 143,392
Prepaid maintenance and other services	10,316	8,046
Prepaid taxes	6,665	8,503
Other prepayments	14,171	16,753
Total prepayments	$ 222,181	$ 176,694

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