Note 8 - Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Weighted average number of shares used in computation of basic earnings per share		50,367		49,599		49,942		49,410
Add:
Additional shares from the assumed exercise of employee stock options		500		690		727		687
Weighted average number of shares used in computation of diluted earnings per share		50,867		50,289		50,669		50,097