Note 3 - Net Income (Loss) Per Share - Earnings per Share Numerator and Denominator (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator:
Numerator for basic and diluted earnings per share, net income (loss) available to common shareholders	$ (565,957)	$ 117,780	$ (953,259)	$ 851,246
Denominator:
Denominator for basic earnings per share, weighted average shares outstanding (in shares)	7,819,608	7,373,656	7,759,205	7,373,656
Effect of dilutive securities (in shares)		4,683,599		4,683,599
Denominator for diluted earnings per share, adjust weighted average shares and assumed conversion (in shares)	7,819,608	12,057,255	7,759,205	12,057,255
Basic earnings per common share (in dollars per share)	$ (0.07)	$ 0.02	$ (0.12)	$ 0.12
Diluted earnings per common share and common share equivalent (in dollars per share)	$ (0.07)	$ 0.01	$ (0.12)	$ 0.07