Note 5 - Equity Incentive Plan (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Three Months Ended March 31,
	2015			2014
Risk free interest rate		1.15	%	1.20%	-	1.33%
Expected volatility		54.65	%		53.28%
Expected life (years)		4.5			4
Expected dividend yield		0.00	%		0.00%