Inventories (Tables)

6 Months Ended

Jun. 28, 2014

Inventory Disclosure [Abstract]

Summary of inventories

	June 28, 2014			December 28, 2013
Raw materials	$	7,006		$	6,037
Work in process	4,098			4,258
Finished goods	4,354			4,238
Provision for slow moving inventory	(749		)	(680		)
Total	$	14,709		$	13,853