Note 7 - Net Income Per Share

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

7.   Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted net income per share reflects the potential dilution that would occur if outstanding securities or other contracts to issue common stock were exercised or converted into common stock, and calculated using the treasury stock method.   The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):

	Year Ended December 31,
	2013		2012		2011
Numerator:
Net income	$	22,898	$	15,756	$	13,301
Denominator:
Weighted average outstanding shares used to compute basic net income per share		37,387		34,871		34,050
Effect of dilutive securities		1,233		1,376		1,110
Weighted average outstanding shares used to compute diluted net income per share		38,620		36,247		35,160
Net income per share - basic	$	0.61	$	0.45	$	0.39
Net income per share - diluted	$	0.59	$	0.43	$	0.38

For the years ended December 31, 2013, 2012 and 2011, approximately 2,000, 1.1 million and 4.9 million weighted-average common stock equivalents, respectively, were excluded from the calculation of diluted net income per share because their inclusion would have been anti-dilutive.