Note 5 - Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

(in thousands)	March 31, 2014 (unaudited)		December 31, 2013 (audited)
Raw materials	$	941	$	940
Finished goods		147		166
Total inventories	$	1,088	$	1,106