Note 3 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

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

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2022		2021		2022		2021
Weighted average common shares outstanding, basic		976,330		1,028,863		975.761		1,028,863
Common shares upon exercise of options and warrants		17,140		2,038		11,834		4,268
Weighted average common shares outstanding, diluted		993,470		1,030,901		987,595		1,033,131