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Schedule of Prepayments (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Prepaid And Other Current Assets [Line Items] |  |
Contract manufacturer prepayments | $ 66,283 | $ 65,972
Prepaid maintenance and other services | 8,481 | 7,343
Prepaid taxes | 3,781 | 11,462
Other prepayments | 12,974 | 11,042
Total prepayments | $ 91,519 | $ 95,819

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