Note 3 - Basic and Diluted Shares (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended				Nine months Ended
	September 30 ,				September 30 ,
	2017		2016		2017		2016
Basic and diluted		19,022,403		18,914,307		18,983,049		18,935,635
Potentially dilutive		27,500		25,281		27,500		25,281