Note 5 - Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Numerator:
Net income	$	11,198	$	7,899	$	21,773	$	13,862
Denominator:
Weighted-average outstanding shares used to compute basic net income per share		40,387		39,570		40,208		39,337
Effect of dilutive securities		1,329		1,175		1,473		1,333
Weighted-average outstanding shares used to compute diluted net income per share		41,716		40,745		41,681		40,670
Net income per share:
Basic	$	0.28	$	0.20	$	0.54	$	0.35
Diluted	$	0.27	$	0.19	$	0.52	$	0.34