Note 8 - Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Weighted average number of shares used in computation of basic earnings per share		49,771		49,456		49,726		49,314
Add:
Additional shares from the assumed exercise of employee stock options		853		681		833		663
Weighted average number of shares used in computation of diluted earnings per share		50,624		50,137		50,559		49,977