Note 4 - Concentrations (Tables)

12 Months Ended

Dec. 31, 2014

Risks and Uncertainties [Abstract]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	December 31,
Accounts Receivable	2014		2013
Customer A		*		11%
Customer B		*		*
Customer C		18%		*

	Year Ended December 31,
Revenue	2014		2013		2012
Customer A		13%		12%		19%
Customer B		*		15		15
Customer C		*		*		*