Note 2 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Stock options to purchase common stock		476,671		409,488		445,804		491,609
Warrants to purchase common stock		72,322		-		24,107		-
		548,993		409,488		469,911		491,609