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Note 6 - Stock-based Compensation (Tables)
9 Months Ended
Sep. 29, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   

Shares

   

Weighted Average

Exercise Price

 

Outstanding at December 30, 2012

    393,500     $ 9.12  

Granted

    0       0  

Exercised

    129,000       8.65  

Forfeited or canceled

    8,500       2.71  

Outstanding at September 29, 2013

    256,000     $ 8.64  
                 

Exercisable at September 29, 2013

    251,000     $ 8.56  
Cash Proceeds And Intrinsic Value Related To Stock Options Exercised [Table Text Block]
   

Nine Months Ended

 
   

Sept. 29, 2013

   

Sept. 30, 2012

 
   

(In millions)

 

Proceeds from stock options exercised

  $ 1.2     $ 0.3  

Intrinsic value of stock options exercised

    1.2       0.3  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
   

Shares

   

Weighted Average

Grant Date

Fair Value

 

Outstanding at December 30, 2012

    1,973,500     $ 14.79  

Granted

    670,000       16.23  

Vested

    405,000       14.65  

Forfeited or canceled

    501,500       14.05  

Outstanding at September 29, 2013

    1,737,000     $ 15.57