Note 2 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

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

	Three Months Ended March,
	2018		2017
Weighted average common shares outstanding - basic		10,326,309		10,264,565
Potentially dilutive securities:
Unvested shares of restricted stock and stock options		38,997		30,772
Weighted average common shares and common share equivalents outstanding - diluted		10,365,306		10,295,337
Average number of potentially dilutive securities excluded from calculation		103,756		47,260