Other Financial Statement Information - Inventories - Net (Detail) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Finished products | $ 34,891 | $ 37,812 |
| Work-in-process | 8,487 | 6,902 |
| Raw materials | 39,363 | 34,854 |
| Inventory, gross | 82,741 | 79,568 |
| Excess of current cost over LIFO cost | (3,219) | (3,538) |
| Noncurrent portion of inventory | (5,857) | (6,118) |
| Inventories - net | $ 73,665 | $ 69,912 |