Note 4 - Stock Options (Details) - Jun. 30, 2015 - USD ($)	Total
Shares outstanding (in shares)	274,500
Shares outstanding - weighted average exercise price (in dollars per share)	$ 1.76
Shares outstanding - weighted average remaining contractual life	6 years
Shares outstanding - aggregate intrinsic value	$ 345,975
Shares vested and exercisable (in shares)	254,500
Shares vested and exercisable - weighted average exercise price (in dollars per share)	$ 1.72
Shares vested and exercisable - weighted average remaining contractual life	5 years 292 days
Shares vested and exercisable - aggregate intrinsic value	$ 320,055