Note 2 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

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

	Three Months Ended June 30 ,				Six Months Ended June 30 ,
	2018		2017		2018		2017
Weighted average common shares outstanding - basic		10,342,674		10,277,155		10,334,492		10,270,860
Potentially dilutive securities:
Unvested shares of restricted stock and stock options		27,644		57,739		33,320		44,255
Weighted average common shares and common share equivalents outstanding - diluted		10,370,318		10,334,894		10,367,812		10,315,115
Average number of potentially dilutive securities excluded from calculation		275,831		96,000		189,794		71,630