Note 4 - Inventory (Tables)

6 Months Ended

Jun. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

(in thousands)	June 30, 2014		December 31, 2013
Raw materials	$	3,954	$	2,866
Finished goods		2,732		2,584
Inventory, net	$	6,686	$	5,450