Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consist of the following:

(In thousands)	September 30, 2017		December 31, 2016
Raw materials and component parts	$	43,261	$	36,821
Finished goods		91,019		60,156
	$	134,280	$	96,977