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Note 5 - Stock-Based Compensation (Tables)
9 Months Ended
Sep. 28, 2014
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 29, 2013

    184,000     $ 8.18  

Granted

    0       0  

Exercised

    20,500       4.31  

Forfeited or canceled

    2,500       1.49  

Outstanding at September 28, 2014

    161,000     $ 8.99  
                 

Exercisable at September 28, 2014

    161,000     $ 8.99  
Cash Proceeds and Intrinsic Value Related to Stock Options Exercised [Table Text Block]
   

Nine Months Ended

 
   

Sept. 28, 2014

   

Sept. 29, 2013

 
   

(In millions)

 

Proceeds from stock options exercised

  $ 0.2     $ 1.2  

Intrinsic value of stock options exercised

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

Shares

   

Weighted Average

Grant Date Fair Value

 

Outstanding at December 29, 2013

    1,707,500     $ 15.62  

Granted

    490,000       21.28  

Vested

    546,500       16.22  

Forfeited or canceled

    231,000       17.14  

Outstanding at September 28, 2014

    1,420,000     $ 17.10