Note 13 - Net (Loss) Per Share - Earnings Per Share Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Numerator for basic and diluted earnings per share, net (loss) available to common shareholders	$ (2,906,183)	$ (5,115,747)
Denominator:
Denominator for basic (loss) per share, weighted average shares outstanding (in shares)	15,428,798	12,958,067
Effect of dilutive securities-stock options and restricted awards (in shares)
Denominator for diluted (loss) per share, adjusted weighted average shares and assumed conversion (in shares)	15,428,798	12,958,067
Basic (loss) per common share (in dollars per share)	$ (0.19)	$ (0.39)
Diluted (loss) per common share and common share equivalent (in dollars per share)	$ (0.19)	$ (0.39)