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Other Financial Statement Information - Inventories - Net (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Inventory Disclosure [Abstract] |  |
Raw materials | $ 49,729 | $ 43,041
Work-in-process | 9,352 | 8,818
Finished products | 45,760 | 42,163
Inventory, gross | 104,841 | 94,022
Excess of current cost over LIFO cost | (4,667) | (4,474)
Noncurrent portion of inventory | (4,456) | (4,289)
Inventories - net | $ 95,718 | $ 85,259

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