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Other Financial Statement Information - Inventories - Net (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Inventory Disclosure [Abstract] |  |
Raw materials | $ 37,535 | $ 34,854
Work-in-process | 9,057 | 6,902
Finished products | 35,629 | 37,812
Inventory, gross | 82,221 | 79,568
Excess of current cost over LIFO cost | (2,784) | (3,538)
Noncurrent portion of inventory | (4,953) | (6,118)
Inventories - net | $ 74,484 | $ 69,912

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