Note 8 - Geographic Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three months ended
	March 31,
	2015		2014
United States	$	12,603	$	4,283
International		542		636
Net sales	$	13,145	$	4,919

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

	March 31,		December 31,
	2015		2014
United States	$	520	$	456
International		19		23
Long-lived assets, net	$	539	$	479