Note 7. Net Income (loss) Per Share (Tables)
6 Months Ended
Jun. 30, 2013
Earnings Per Share [Text Block]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

June 30, 2013

     

July 1, 2012

   

June 30, 2013

   

July 1, 2012

 
      (in thousands except for per-share amounts)  
                                   

Numerator:

                                 

Net income (loss)

  $ (3,231 )     $ 25,997     $ (17,666 )   $ 12,879  

Denominator:

                                 

Denominator for basic net income per share, weighted average shares

    58,646         59,975       58,366       59,832  

Effect of dilutive securities

    -         500       -       758  

Denominator for diluted net income per share, weighted average shares

    58,646         60,475       58,366       60,590  
                                   

Basic net income (loss) per share

  $ (0.06 )     $ 0.43     $ (0.30 )   $ 0.22  

Diluted net income (loss) per share

  $ (0.06 )     $ 0.43     $ (0.30 )   $ 0.21  

Potentially dilutive shares excluded from the diluted income per share computation because their effect would have been anti-dilutive

    5,782         7,515       4,555       7,515