Inventories (Tables)

6 Months Ended

Jul. 01, 2017

Components of Inventories

 Inventories consist of the following:

	July 1, 2017		December 31, 2016
	(in thousands)
Current inventory:
Raw materials	$	34,974	$	35,314
Work in process		8,705		8,131
Finished goods		12,652		9,054
Total current inventory		56,331		52,499
Long term inventory		9,033		6,316
Total inventory	$	65,364	$	58,815