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Note 7 - Net Income Per Share
 6 Months Ended
Jun. 30, 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 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 June 30, 

   

Six Months

Ended June 30, 

 
   

2013

   

2012

   

2013

   

2012

 

Numerator:

                               

Net income

  $ 4,552     $ 4,820     $ 9,283     $ 8,319  

Denominator:

                               

Basic weighted average common shares outstanding

    29,650       28,560       29,501       28,472  

Dilutive effect of equity incentive plans

    1,504       1,000       1,484       831  

Diluted weighted average common shares outstanding

    31,154       29,560       30,985       29,303  

Net income per share:

                               

Basic

  $ 0.15     $ 0.17     $ 0.31     $ 0.29  

Diluted

  $ 0.15     $ 0.16     $ 0.30     $ 0.28  

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 June 30, 

   

Six Months

Ended June 30, 

 
   

2013

   

2012

   

2013

   

2012

 

Outstanding options

    112       1,763       110       1,835  

Nonvested restricted stock units

    174       21       88       31  

Total

    286       1,784       198       1,866