Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Weighted Average Number of Shares [Table Text Block]

	Years Ended December 31,
	2021		2020
Weighted average common shares outstanding–basic		10,462,246		10,256,560
Potentially dilutive securities:
Unvested shares of restricted stock and employee stock options		267,616		-
Weighted average common shares and common share equivalents outstanding–diluted		10,729,862		10,256,560
Average number of potentially dilutive securities excluded from calculation		231,938		717,015