Note 8 - Shareholders' Equity (Details) - Option Activity (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Option Activity [Abstract]
Outstanding	1,262,763	712,763
Outstanding, weighted average exercise price	$ 1.57	$ 1.33
Outstanding, weighted average remaining contractual term (years)	7 years 237 days	5 years 138 days
Outstanding, aggregate intrinsic value	$ 41,570
Exercisable end of year	485,263
Exercisable end of year	$ 1.45
Exercisable end of year	5 years 94 days
Exercisable end of year	$ 34,270
Granted	795,000
Granted	$ 1.59
Exercised	(92,500)
Exercised	$ 0.93
Forfeited	(72,500)
Forfeited	$ 1.66
Expired	(80,000)
Expired	$ 1.38