Inventories (Tables)

6 Months Ended

Jul. 01, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

(In thousands)	July 1, 2017		December 31, 2016
Work in progress	$	52,790	$	50,688
Finished goods	25,689		28,480
Total inventories	$	78,479	$	79,168