Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

	Years Ended December 31,
	2019		2018
Weighted average common shares outstanding–basic		10,373,164		10,347,947
Potentially dilutive securities:
Unvested shares of restricted stock and employee stock options		18,811		34,247
Weighted average common shares and common share equivalents outstanding–diluted		10,391,975		10,382,194
Average number of potentially dilutive securities excluded from calculation		523,485		216,420