Note 2 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	Three Months Ended March,
	2021		2020
Weighted average common shares outstanding - basic		10,329,449		10,220,853
Potentially dilutive securities:
Unvested shares of restricted stock and employee stock options		196,377		-
Weighted average common shares and common share equivalents outstanding - diluted		10,525,826		10,220,853
Average number of potentially dilutive securities excluded from calculation		347,068		685,667