Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following:

	(In thousands)
	September 30, 2017		December 31, 2016
Raw materials and supplies	$	70,787	$	64,650
Work in process	66,689		56,806
Finished goods	12,275		9,180
	149,751		130,636
Less progress payments	12,594		10,740
Total	$	137,157	$	119,896