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Note 6 - Net Income Per Share
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]

6. NET INCOME PER SHARE


Basic net income per share is computed by dividing net income by weighted average number of common shares outstanding for the period (excluding outstanding stock options and shares subject to repurchase). Diluted net income per share is computed using the weighted-average number of common shares outstanding for the period plus the potential effect of dilutive securities which are convertible into common shares (using the treasury stock method), except in cases in which the effect would be anti-dilutive. Under the treasury stock method, the amount that the employee must pay for exercising stock options, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of the tax benefits that would be recorded in additional paid-in capital when the award becomes deductible are assumed to be used to repurchase shares.  The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income per share (in thousands except per share amount): 


   

Three Months Ended March 31,

 
   

2015

   

2014

 

Numerator:

               

Net income

  $ 5,967     $ 6,255  

Denominator:

               

Basic weighted-average shares outstanding

    31,336       30,477  

Effect of dilutive options and restricted stock

    955       1,488  

Diluted weighted average shares outstanding

    32,291       31,965  
                 

Net income per share - Basic

  $ 0.19     $ 0.21  

Net income per share - Diluted

  $ 0.18     $ 0.20  

 The following table sets forth potential shares of common stock that are not included in the diluted net income per share calculation above because to do so would be anti-dilutive for the periods indicated (in thousands): 


   

Three Months Ended March 31,

 
   

2015

   

2014

 

Outstanding options

    55       19  

Nonvested restricted stock units

    414       —  

Employee Stock Purchase Plan

    264       48  

Total

    733       67