Note 16 - Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	201 7		201 6		201 5
Basic weighted average shares outstanding		37,706,312		37,629,975		34,526,622
Effect of dilutive securities		211,945		202,761		169,140
Diluted weighted average shares outstanding		37,918,257		37,832,736		34,695,762