Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

v3.8.0.1
Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 30, 2017
Summary of inventories    
Raw materials $ 25,803 $ 26,426
Work in process 7,975 6,910
Finished goods 8,735 9,920
Provision for slow moving inventory (1,651) (1,711)
Total $ 40,862 $ 41,545