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Schedule of Prepayments (Detail) - USD ($) $ in Thousands | Apr. 01, 2018 | Dec. 31, 2017
--- | --- | ---
Prepaid And Other Current Assets [Line Items] |  |
Contract manufacturer and supplier prepayments | $ 76,204 | $ 82,503
Prepaid maintenance and other services | 8,449 | 8,189
Prepaid taxes | 9,938 | 5,039
Other prepayments | 11,964 | 12,386
Total prepayments | $ 106,555 | $ 108,117

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