Note 3 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

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

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2021		2020		2021		2020
Weighted average common shares outstanding, basic		1,028,863		1,024,467		1,028,863		1,023,579
Common shares upon exercise of options and warrants		2,764		10,176		3,785		10,176
Weighted average common shares outstanding, diluted		1,031,627		1,034,643		1,032,648		1,033,755