Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following (in thousands):

	September 30,		December 31,
	2017		2016
Raw material and subassemblies	$	223,817	$	200,640
Work-in-progress	52,287		43,430
Finished goods	136,901		127,301
	$	413,005	$	371,371