Components of Inventories (Detail) - USD ($) $ in Thousands |
Jun. 25, 2016 |
Dec. 26, 2015 |
|---|---|---|
| Inventory [Line Items] | ||
| Raw materials | $ 40,740 | $ 42,123 |
| Work in process | 10,085 | 8,876 |
| Finished goods | 12,090 | 8,261 |
| Inventory, Gross | 62,915 | 59,260 |
| Less portion in other long term assets | (1,670) | (2,798) |
| Inventories | 61,245 | 56,462 |
| Inventory, Gross | $ 62,915 | $ 59,260 |