Inventories

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following (in thousands):

	March 31,		December 31,
	2018		2017
Raw material and subassemblies	$	215,479	$	210,615
Work-in-progress	54,310		47,400
Finished goods	116,117		114,168
	$	385,906	$	372,183