Note 18 - Net Earnings (Loss) Per Common Share (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	2016		2015		2014
Shares issued and outstanding at beginning of year		38,504,311		35,806,955		35,801,732
Weighted average number of shares:
Issued during the year		91,754		1,389,361		335,253
Repurchased during the year		-		-		(220,333	)
Weighted average number of shares used in computing basic earnings per share		38,596,065		37,196,316		35,916,652
Assumed exercise of stock options acquired under the treasury stock method		271,771		389,937		392,326
Number of shares used in computing diluted earnings per share		38,867,836		37,586,253		36,308,978