Annual report pursuant to Section 13 and 15(d)

Accrued Expenses - Summary of Accrued Expenses (Detail)

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Accrued Expenses - Summary of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Payables And Accruals [Abstract]    
Accrued inventory purchases $ 48,087 $ 53,607
Accrued payroll and taxes 45,337 33,711
Accrued expenses $ 93,424 $ 87,318