Inventories (Tables)

9 Months Ended

Sep. 30, 2012

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following (in thousands):

	September 30, 2012		December 31, 2011
Purchased materials	$	2,027	$	2,346
Work‑in‑process	32		86
Finished goods	8,473		8,693
	$	10,532	$	11,125