Note 3 - Net Income Per Share - Earnings per Share Numerator and Denominator (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Numerator for basic and diluted earnings per share, net income available to common shareholders	$ 117,780	$ 688,560	$ 851,246	$ 1,337,101
Denominator:
Denominator for basic earnings per share, weighted average shares outstanding (in shares)	7,373,656	8,334,303	7,373,656	8,334,065
Effect of dilutive securities (in shares)	4,683,599	606,906	4,683,599	537,800
Denominator for diluted earnings per share, adjust weighted average shares and assumed conversion (in shares)	12,057,255	8,941,209	12,057,255	8,871,865
Basic earnings per common share (in dollars per share)	$ 0.02	$ 0.08	$ 0.12	$ 0.16
Diluted earnings per common share and common share equivalent (in dollars per share)	$ 0.01	$ 0.08	$ 0.07	$ 0.15