Inventories (Tables)

3 Months Ended

Apr. 01, 2017

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following:

	(In thousands)
	April 1, 2017		December 31, 2016
Raw materials and supplies	$	69,153	$	64,650
Work in process	59,268		56,806
Finished goods	10,147		9,180
	138,568		130,636
Less progress payments	11,367		10,740
Total	$	127,201	$	119,896