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Note 16 - Earnings Per Share ("EPS") - Reconciliation of Numerator of Basic and Diluted EPS Calculations (Details) - USD ($)		3 Months Ended
	Sep. 23, 2015	Mar. 31, 2021	Mar. 31, 2020
Net loss		$ (851,431)	$ (3,370,282)
Deemed dividends related to down-round features	$ (41,688)		(112,686)
Net loss available to common stockholders		$ (851,431)	$ (3,482,968)

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