Inventories (Details) - USD ($) $ in Thousands |
Dec. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Summary of inventories | ||
| Raw materials | $ 26,426 | $ 16,864 |
| Work in process | 6,910 | 5,641 |
| Finished goods | 9,920 | 8,069 |
| Provision for slow moving inventory | (1,711) | (574) |
| Total | $ 41,545 | $ 30,000 |
| X | ||||||||||
- Definition Summary of inventories. No definition available.
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of valuation reserve for inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|