Note 4 - Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	March 31,		December 31,
	2015		2014
Raw materials	$	4,149	$	3,183
Finished goods		6,677		4,100
Inventories, net	$	10,826	$	7,283