Note 3 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	For the Year Ended December 31,
		2019(1)	2018(1)
Weighted average common shares outstanding, basic		1,008,979	1,029,001
Common shares upon exercise of options		12,886	10,598
Weighted average common shares outstanding, diluted		1,021,865	1,039,599

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

	For the Year Ended December 31,
	2019	2018
Dividend yield	0%	0%
Expected volatility	910%	740%
Risk-free interest rate	1.6%	2.5%
Expected lives (years)	5.0	5.0