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Note 5 - Stock-based Compensation (Tables)
3 Months Ended
Apr. 05, 2015
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 28, 2014

    126,000     $ 9.23  

Granted

    0       0  

Exercised

    17,000       8.95  

Forfeited or canceled

    0       0  

Outstanding at April 5, 2015

    109,000     $ 8.91  
                 

Exercisable at April 5, 2015

    109,000     $ 8.91  
Cash Proceeds and Intrinsic Value Related to Stock Options Exercised [Table Text Block]
   

Three Months Ended

 
   

April 5,

2015

   

March 30,

2014

 
   

(In thousands)

 

Proceeds from stock options exercised

  $ 157     $ 105  

Intrinsic value of stock options exercised

  $ 131     $ 224  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
   

Shares

   

Weighted Average

Grant Date

Fair Value

 

Outstanding at December 28, 2014

    1,391,000     $ 17.12  

Granted

    579,000       16.22  

Vested

    286,000       14.01  

Forfeited or canceled

    194,000       13.46  

Outstanding at April 5, 2015

    1,490,000     17.84