Inventories (Tables)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following (in thousands):

	September 30, 2016		December 31, 2015
Purchased materials	$	171	$	164
Finished goods	2,438		2,729
	$	2,609	$	2,893