2. Inventories (Tables)

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The components of inventories are:

	March 31,		December 31,
	2016		2015
	(In thousands)
Raw materials and purchased component parts	$	5,711	$	6,627
Work-in-process		1		1
Finished goods		4,209		4,668
	$	9,921	$	11,296