Inventory (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory

The major classes of inventory were as follows:

	2016		2015
	(In thousands)
Raw materials	$	56,962	$	31,354
Work-in-progress	12,033		21,487
Finished goods	1,903		11,743
Total	$	70,898	$	64,584