Note 16 - Net Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

	2018		2017
Shares issued and outstanding at beginning of period		38,934,161		38,648,461
Weighted average number of shares: Issued during the period		221,293		181,523
Weighted average number of shares used in computing basic earnings per share		39,155,454		38,829,984
Assumed exercise of stock options acquired under the Treasury Stock Method		639,161		477,870
Number of shares used in computing diluted earnings per share		39,794,615		39,307,854