Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following:

	September 30, 2017		December 31, 2016
	(In thousands)
Raw materials and purchased components	$	204,613	$	173,035
Work-in-process	109,594		94,955
Total inventories	$	314,207	$	267,990