Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The components of inventories follow:

(in thousands)	March 31,    2013		December 31, 2012
Work-in-process and raw materials	$	419	$	346
Finished goods		414		402
Total inventories	$	833	$	748